[go: up one dir, main page]

WO2018157209A1 - Poteau de support composite - Google Patents

Poteau de support composite Download PDF

Info

Publication number
WO2018157209A1
WO2018157209A1 PCT/AU2018/050186 AU2018050186W WO2018157209A1 WO 2018157209 A1 WO2018157209 A1 WO 2018157209A1 AU 2018050186 W AU2018050186 W AU 2018050186W WO 2018157209 A1 WO2018157209 A1 WO 2018157209A1
Authority
WO
WIPO (PCT)
Prior art keywords
tensile
support pole
compressive
wall
pole
Prior art date
Application number
PCT/AU2018/050186
Other languages
English (en)
Inventor
Mark Anthony RUSSO
Original Assignee
World Wide Window Cleaning Supplies IP Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2017900689A external-priority patent/AU2017900689A0/en
Application filed by World Wide Window Cleaning Supplies IP Pty Ltd filed Critical World Wide Window Cleaning Supplies IP Pty Ltd
Priority to AU2018228275A priority Critical patent/AU2018228275B2/en
Priority to CN201890000667.3U priority patent/CN212079865U/zh
Publication of WO2018157209A1 publication Critical patent/WO2018157209A1/fr
Priority to AU2021100579A priority patent/AU2021100579B4/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/04—Handle constructions telescopic; extensible; sectional
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/06—Hand implements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/12—Locking and securing devices
    • B25G3/14—Locking and securing devices comprising barbs or teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/38—Hinged, pivoted, swivelling, or folding joints
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
    • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/14—Parts, details or accessories not otherwise provided for
    • E04H4/16—Parts, details or accessories not otherwise provided for specially adapted for cleaning
    • E04H4/1609—Hand-held strainers, non-powered brushes or scrubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1418—Telescoping systems locking in intermediate non-discrete positions with a clamping collar or two split clamping rings tightened by a screw or a cammed latch member

Definitions

  • the present invention generally relates to a support member formed from composite materials. More particularly, the invention relates to a composite support pole which can be used in one example, for window cleaning.
  • the invention has been developed for use in overhead cleaning of elevated windows and it will be convenient to hereinafter describe the invention in the context of this exemplary application. However, it is to be appreciated that the invention is not limited to this application and could be used for supporting an overhead device or load in other applications for example painting, general surface cleaning, landscaping, audio/visual recording or in carpentry.
  • Conventional window cleaning poles are historically formed of tubular aluminium and are water-fed via a hose extending the length of the pole allowing for the cleaning element at the free-end of the pole to be kept moist and for a rinsing water supply to applied to the window during the cleaning process.
  • window-cleaning poles In addition to the requirement for window-cleaning poles to be sufficiently strong and stiff to resist the loads applied by gravity, it is also necessary for the pole to be sufficiently strong and stiff when a cleaning element connected to the free-end thereof is pressed against an overhead window.
  • the load applied to the pole by the operator (which is resisted by the window) is typically greater than the load applied by gravity.
  • the support pole must therefore be capable of not only resisting the bending loads applied by gravity but also the, bending loads applied by the operator in pressing the cleaning element against the window, which will generally be applied in the reverse direction of the bending loads applied by gravity.
  • pole length is limited by the maximum weight that is suitable for safe and efficient manual handling. At the expense of pole strength, pole weight may be lowered by reducing pole diameter or pole wall thickness. However, a prescribed minimum pole strength is required of the pole to support the overhead weight of the cleaning element, the water supply and the pole itself. In this regard, maximum pole length is essentially dependent upon the compromise struck between pole strength and pole weight.
  • tubular support poles formed of composite materials such as carbon fibre have been developed having improved strength to weight ratios as compared to aluminium. These improvements have allowed for the development of window cleaning poles that facilitate ground floor cleaning of windows as high as five stories and sometimes even higher.
  • window cleaning poles that facilitate ground floor cleaning of windows as high as five stories and sometimes even higher.
  • existing high-performance support poles are typically costly due to the relatively high volume of composite materials therein. It is therefore also desirable to provide an improved support pole capable of achieving at least equivalent elevation to existing high-performance (i.e. high-length) support poles, but at reduced production cost.
  • ground surface is used for convenience, it will be understood as referring to the surface on which the operator is standing which may, in some instances, may be an elevated platform such as when an operator is standing on scaffolding.
  • terms such as “upper”, “upward”, “topside”, “lower”, “downward” and “underside” will be generally be understood with reference to the ground surface.
  • a support pole always has a longitudinal axis parallel to the length of the pole and a transverse axis perpendicular to the longitudinal axis.
  • the term 'composite support pole' will also be generally understood as referring to a support pole formed from composite materials.
  • the present invention provides a composite support pole for supporting an overhead load at a free end thereof, the support pole including at least one composite support member, the support member including:
  • a tensile wall for, in use, bearing tensile load, the tensile wall formed as a cylindrical segment having a circular arc which defines a tensile wall arc length;
  • a compressive wall which opposes the tensile wall for, in use, bearing compressive load
  • the compressive wall formed as a cylindrical segment having a circular arc which defines a compressive wall arc length that is greater than the tensile wall arc length; and a pair of opposing side walls extending between the tensile and compressive walls, the side walls being planar or having a degree of curvature that is less than that the curvature of the tensile and compressive walls.
  • the present invention provides a novel composite support pole capable of improved performance whilst supporting a load at a free-end thereof.
  • the present invention may be used to support an elevated cleaning element such a window-cleaning squeegee to facilitate the cleaning of elevated cleaning surfaces such as building walls or windows.
  • a support pole according to the present invention may also be used to support paint rollers in painting applications, microphones or cameras in audio-visual recording applications.
  • Other applications include the support of power tools in carpentry applications or cutting devices such as hedge trimmers or chainsaws in landscaping applications.
  • the present invention may also be applicable to any other application in which it is desirable to support a load at a free-end of a pole.
  • the maximum expected force to be applied to the pole is generally unidirectional and is generally known. Accordingly, it is possible for a given application to identify which of the walls will bear a compressive load and which will bear a tensile load.
  • the present invention optimises the apportionment of composite materials in recognition of the unidirectional load distribution and in view of the material properties of composite materials.
  • the present invention advantageously optimises material distribution by providing a compressive wall having greater arc length than the tensile wall.
  • the present invention provides a reduction in composite materials at the tensile side of the pole in light of composite materials having significantly greater strength when under tensile load as compared to when under compressive load.
  • the present invention thus distributes additional composite material at the compressive side of the pole where it is required relative to the material distribution at the tensile side which is reduced with a consequent reduction in total pole mass.
  • a cross section of a support pole according to the present invention defines a load bearing profile optimised for the unidirectional load applied by the window against the pole during the cleaning process.
  • the operator will orientate the pole with the tensile or narrower side of the pole facing toward the window (i.e. generally downward) and the compressive or wider side of the pole facing away from the window (i.e. generally upward).
  • the support pole is configured to resist the maximum load which it is expected to undergo. It will be appreciated that the downward-facing tensile wall will often also undergo a compressive load applied by gravity prior to and after contact between the cleaning element and the window.
  • the load applied by gravity is generally less than the load applied to the pole during abutment between the cleaning element and the window and therefore, during window-cleaning applications, the support pole will be orientated in this manner so as to accommodate the maximum loads.
  • This orientation i.e. wider side facing upward
  • the support pole is connected to a paint roller, chainsaw, hedge trimmer etc. and any other application where it may be necessary for an operator to press downward on the pole against an overhead object.
  • the maximum load expected to be borne by the pole is due to gravity and therefore the pole may be orientated with the wider (compressive wall) facing downward.
  • Each of the tensile and compressive walls in a pole according to the present invention is formed as a cylindrical segment and therefore defines a circular arc.
  • the use of circular arcs advantageously provides the most efficient material distribution resulting in an improved strength to weight ratio as compared to alternative linear or curvilinear profiles.
  • cylindrical segments are ergonomically advantageous when manually gripping a portion of the support pole. Cylindrical segments are also more readily clamped compared to linear or curvilinear profiles and are therefore advantageous in instances when pole clamps are employed to clamp together two or more telescopic support members in order to form an extension pole.
  • the cross-section of the support member described above provides a number of advantages over alternative profiles such as trapezoidal, circular, elliptical, or rounded-cornered triangular pole profiles.
  • support members according to the present invention are more readily clamped and ergonomically superior as compared to trapezoidal, elliptical and radially-cornered triangular profiles.
  • the present invention distributes composite material more efficiently to provide improved unidirectional load-bearing properties as compared to all of the above alternative profiles and by that more efficient distribution, strength, weight and cost savings can arise.
  • the pair of side walls of a composite support pole according to the present invention extends between the ends of the tensile and compressive walls thereby being functionally analogous to the 'web' in a steel I-beam. Accordingly, the tensile and compressive walls, analogous to the I-beam flanges, resist bending moments applied to the pole whilst the side walls resist shear forces.
  • the side walls are linear in cross- section and therefore are planar in length.
  • the cross- section of the support member may therefore be described as a trapezoid having rounded upper and lower sections or ends.
  • the use of linear side walls is advantageous in that it reduces material use as compared to curved or curvilinear walls.
  • the use of linear side walls minimises lateral forces applied to the tensile and compressive walls and directs load longitudinally along the compressive and tensile walls.
  • the fibres in the composite tensile and compressive walls will be laid generally longitudinally therefore increasing wall strength along the longitudinal axis.
  • the use of linear walls facilitates load to be borne along the direction of the fibres and reduces load being undesirably transmitted transversely to the direction of the fibres.
  • the provision of linear side walls results in side walls that are shorter than if formed by a circular arc. This, in turn, reduces the amount of material required in the side walls.
  • the cross-sectional profile of the present invention may reduce the perimeter length by approximately 6% when compared to a circular profile.
  • the side walls may have a relatively minor degree of curvature which is less than the curvature (i.e. having lesser concavity) than the tensile and compressive walls.
  • forms of the invention having curved side walls do not define a circular pole member and may still represent an improvement over existing pole profiles.
  • the arc length of the tensile wall is less than the arc length of the compressive wall in view of the unequal tension/compression bearing properties of composite materials such as fibre-based composite materials.
  • the ratio of the compressive wall arc length to the tensile wall arc length is between 4: 1 and 1 .2:1 . More particularly, the ratio of the compressive wall arc length to the tensile wall arc length may be between 3: 1 and 1.5: 1 . In a particular form of the invention, the ratio of the compressive wall arc length to the tensile wall arc length is 2: 1 . That is, the arc length of the compressive wall is twice the arc length of the tensile wall.
  • This form of the invention is particularly applicable to carbon fibre composites in which the tensile modulus is approximately twice that of the compression modulus such that the tensile wall may be formed with half the material of the compressive wall. It will be appreciated that the ratios between the arc length of the tensile and compressive walls may vary depending on the type of composite material used and may be optimised according to the particular tension/compression modulus of that material.
  • tensile and compressive walls when viewed in cross section, define circular arcs which curve around respective centre points, the distance between the centre point and a point on the arc defining the radii of the arcs.
  • the arcs may be concentric such that each arc curves about a common centre point.
  • the circular arc of the tensile wall has a radius equal to a radius of the circular arc defining the compressive wall.
  • the circular arcs of the tensile and compressive walls are concentric and have equal radius. It will be appreciated that in this form of the invention the tensile and compressive walls therefore define discrete segments of a common cylinder.
  • the tensile and compressive walls when viewed in cross section, define segments of a common cylinder and the tensile wall arc length is equal to the common radius of the cylindrical segments.
  • the tensile wall arc length proportionate to the total l circumference of the circular cross section of the common cylinder is equal to — (i.e.
  • the cross sectional profile of the support member may be generally symmetrical about a central axis extending between respective midpoints of the compressive wall arc length and the tensile wall arc length.
  • the provision of a symmetrical profile facilitates an even distribution of load across the support member.
  • the support pole defines a longitudinal axis extending along the length of the pole and a transverse axis, perpendicular to the longitudinal axis, extending between the opposing sidewalls. It is to be appreciated that the central axis extending between the tensile and compressive walls is therefore perpendicular to both the longitudinal and the transverse axes. It will also be appreciated that the 'midpoints' on the circular arcs of the tensile and compressive walls may also the uppermost or lowermost points on the cross section.
  • Embodiments of the present invention in which the support member is symmetrical about the central axis are also advantageous in respect of the ergonomics and comfort of the pole whilst being held by the operator. Moreover, symmetrical profiles are typically more convenient to manufacture as compared to asymmetrical profiles. It will, however, be appreciated that the invention may be performed using an asymmetrical profile in some instances.
  • the support member may include opposing side walls of uneven length thereby providing an asymmetrical profile.
  • a support pole according to the present invention may include a single support member.
  • an implement may be connected to a free-end of the support member whilst an operator manually grips the opposite end.
  • a squeegee implement may be connected to a free-end of the support member whilst a window-cleaner grips the opposite end whilst raising the pole and squeegee overhead in order to clean elevated windows.
  • the support pole includes a plurality of support members.
  • This form of the invention advantageously allows for a support pole of longer total length to be formed by connecting a number of individual support members in series to facilitate, for example, the cleaning of windows having greater elevation than may be reached using a single support member.
  • this form of the invention allows an operator to adjust the length of the support pole in accordance with the operating height of a particular application.
  • each support member in the plurality of support members is hollow and has sequentially decreasing size to permit telescopic coupling or engagement between adjacent support members.
  • a support pole according to the present invention may comprise a first and second support member, the second support member having equal length to the first support member but having a lesser width or diameter than the first support member such that the second support member is able to telescopically sleeve within an internal passageway defined by the first support member.
  • This form of the invention advantageously allows an operator to adjust the extent to which the second support member protrudes from within the first support member and thereby provides an extension pole in which pole length may be conveniently adjusted.
  • a support pole according to the present invention may include a third support member sized for sleeving within the second support member and a fourth support member sized for sleeving within the third support member and so on until the desired potential length of the support pole is achieved. It will be appreciated that the sequential size reduction in each additional support member also reduces the overall weight of the support pole borne by the operator during use, compared to a support pole comprising a single support member of a length equal to the total extended length of a plurality of support members that are telescopically connected.
  • the term 'free-end' refers to the distal or outermost end of the support pole at the opposite end from the end which is grasped by the operator.
  • the free-end of the support pole is at the opposite end of the support member to that which is gripped by the operator.
  • the free-end of the support pole is the distal end of the final support member in the series of support members, again, opposite to the end of the pole which is gripped by the operator.
  • the support pole of the present invention may further include at least one clamp for connecting adjacent support members where a support pole is provided with a plurality of support members.
  • the clamp(s) may operate to arrest telescopic movement between adjacent members thereby permitting the support pole to be retracted when the clamp(s) are disengaged and for the support pole to be retained in an extended configuration when the clamp(s) are engaged.
  • the clamp(s) may operate to connect adjacent support members in series.
  • a clamp suitable for use with the present invention may include a pair of opposing curved clamping faces shaped for engagement with the tensile and compressive walls.
  • a composite support pole according to the present invention may be formed from a plurality of layers of fibre material, such as glass or carbon fibre, surrounded by a matrix material such as resin.
  • each of the tensile, side and compressive walls are formed by a discrete number of fibre layers.
  • the tensile and compressive walls are formed with the same number of fibre layers as the side walls.
  • each of the tensile, compressive and side walls comprise a plurality of fibre layers and the number of layers in the tensile and compressive walls is equal to the number of layers in the side walls in addition to at least one reinforcement layer.
  • the tensile and compressive walls are formed with additional reinforcement layers in order to distribute more fibre material in the tensile and compressive walls where compressive and tensile bending forces are to be absorbed.
  • the tensile and compressive walls may each include at least two reinforcement layers or three, four, five or more reinforcement layers. It will be appreciated that any of the compressive, tensile or side walls may be provided with reinforcement such that the thickness of the pole walls may be varied to manipulate and optimise the mechanical performance of the pole.
  • the side walls are formed of five fibre layers.
  • the tensile and compressive walls include three reinforcement layers
  • the tensile and compressive walls will therefore be formed by eight fibre layers.
  • the number of fibre layers in the side walls may vary depending on the intended pole application. Additional fibre layers increase pole strength however it will appreciated that additional materials also increase weight and often cost. Therefore, depending on the application, it may be desirable to have a support pole formed of fewer or more layers than five.
  • the number of reinforcement layers will vary depending on performance, weight and cost considerations and may be specific to each particular application.
  • the support member(s) of the present invention may be formed from glass fibre.
  • the support member(s) may be formed from carbon fibre.
  • a combination of glass/carbon fibre may be used.
  • various other fibre composite materials may be used, the particular material selection being a function of performance requirements and cost.
  • carbon fibre may be selected in view of its advantageous strength to weight ratio.
  • a glass fibre pole or glass/carbon mixture may be used in order to reduce cost, given that carbon fibre is more expensive that glass fibre at present.
  • the advantageous unidirectional load bearing profile of the present invention allows for less material to be used than would otherwise be required of poles formed with alternative profiles such as circular, triangular, trapezoidal etc. and which are to achieve the same performance.
  • the support pole includes an adaptor member connected to the free-end of the support pole facilitating connection between the support pole and an implement.
  • an implement such as a cleaning tool, a paint roller or a window squeegee may be conveniently connected to the free- end of the support pole.
  • the adaptor member has a pair of first and second opposite ends and includes a hollow circular region at the first end defining an aperture for receiving a circular member extending from the implement; and a connection region at the second end for connection to the free-end of the support pole, the connection region having a profile equivalent to the profile of the support pole to facilitate connection thereto and a transition region between the first and second ends in which the profile of the second end transitions into a circular profile of the hollow circular region.
  • This form of the invention advantageously allows for circular handles of various implements to be received within the hollow region of the adaptor member in order to connect the implement to the support pole, via the adaptor member.
  • the support member(s) define an internal passageway and the support pole further includes a flexible tube extending through the passageway for delivering a liquid to the free-end of the support pole.
  • the flexible tube may deliver water, a cleaning agent or a mixture of the two to a squeegee at the free-end of the support pole.
  • the internal passageway may contain electrical wiring extending to the electrical device.
  • Figure 1 illustrates the operation of a support pole according to the present invention being utilised in a window-cleaning application.
  • Figure 2 illustrates a closer perspective of the operator and pole lower end, as illustrated in Figure 1 .
  • Figure 3 is a perspective view of a portion of a composite support member according to the present invention.
  • Figure 4 is a cross sectional perspective of the composite support member illustrated in Figure 3.
  • Figure 5 is a cross sectional perspective of the composite support member illustrated in Figures 3 and 4 with geometrical indicators.
  • Figure 6 is a perspective view of an inner support member telescopically sleeved within an outer support member.
  • Figure 7 is a partially exploded view of the composite support pole illustrated in Figure 1.
  • Figure 8 is a perspective view of the adaptor member illustrated in Figure 7.
  • Figure 9 is a perspective view of the other side of the composite support pole illustrated in Figure 7 with a hose extending through an internal passageway in the pole.
  • Figure 10 is a view of the composite support pole illustrated in Figures 1 , 7 and 9 and a hinge connecting the upper end of the support pole to a cleaning brush.
  • Figure 1 1 is a closer perspective of the hinge illustrated in Figure 10.
  • Figure 12 is an exploded view of the hinge illustrated in Figure 1 1.
  • Figure 13 illustrates a 45° adaptor which may be u sed as an alternative to the hinge arrangement illustrated in Figures 10-12.
  • Figure 14 is a cross sectional view of an alternative composite support member which includes four reinforcement layers on the compressive and tensile walls.
  • Figure 15 illustrates an alternative embodiment of a composite pole cross- section according to the present invention.
  • Figure 16 illustrates specific radian ratios of the composite pole cross section illustrated in Figure 15.
  • Figure 17 illustrates another alternative embodiment of the present invention comprising a plurality of composite layers.
  • FIG 1 illustrates an operator 18 standing upon ground surface outside a building 22 and utilising a composite support pole 10 to clean an overhead window 20.
  • Composite support pole 10 is manually gripped by the operator 18 at a lower end 24 to support and control pole 10 during use.
  • the pole 10 is inclined with respect to the ground surface such that the opposite end of the pole is elevated above the operator 18 and therefore comprises an upper end 26 which also defines a free end of the support pole.
  • a cleaning element 14 is connected to the upper end 26 which, under the control of the operator 18, contacts the overhead window 20 during the cleaning process.
  • a hose 28 extends between the lower end 24 and the upper end 26 through an internal passageway defined by pole 10 to provide a water supply the cleaning element 14 and facilitate the cleaning of overhead window 20.
  • Hose 28 extends out from the lower end 24 and is connected to a suitable water source such as a mains water supply or an electric water pump (not illustrated).
  • support pole 10 includes a compressive wall 30 and a tensile wall 32 which will be discussed in greater detail in reference to Figures 3 to 5.
  • Support pole 10 includes a plurality of support members 1 1 which permits the length of pole 10 to be adjusted by an operator as necessary, for example depending on the height of the particular window to be cleaned.
  • a section of one support member 1 1 is shown in Figure 3 which illustrates the compressive wall 30, the tensile wall 32 and a pair of straight side walls 34 extending between the tensile and compressive walls 32, 30.
  • Tensile wall 32 and compressive wall 30 are each formed as a cylindrical segment (i.e. a portion of a cylinder) which, when viewed in cross section, therefore define circular arcs.
  • cross sectional profile of a support member according to the present invention has a unique non- circular or rounded-trapezium profile which conveys a number of advantages over existing support pole profiles, which will be discussed in greater detail below.
  • Figure 4 illustrates a cross-section of support member 11 in which the respective cylindrical segments define a compressive wall circular arc 38 and a tensile wall circular arc 36.
  • Each of the circular arcs 36, 38 have a respective arc length.
  • the length of the compressive wall arc 38 is larger than the length of the tensile wall circular arc 36.
  • the compressive wall 30 comprises a greater volume of composite material as compared to the tensile wall 32.
  • this profile optimises material distribution in recognition of the material properties of composite materials.
  • this cross sectional profile provides a reduced distribution of material at the tensile side of the support member 1 1 in light of composite materials having greater strength when bearing tensile load, as compared to when bearing compressive load.
  • the selective apportionment of composite material represents a significant advantage over existing composite poles, for example circular poles, which are vastly more prone to failure on the side of the pole that is bearing compressive load.
  • the present invention increases the compressive strength of the pole with the increased apportionment of composite material on the side of the pole intended to bear compressive load.
  • the present invention advantageously reduces the discrepancy between (or in some cases equalises) the tensile and compressive limits of the pole.
  • compressive wall circular arc 38 and tensile wall circular arc 36 are concentric, sharing a common centre point C.
  • the distance between a point on compressive wall arc 38 to centre point C defines a compressive wall arc radius Rc.
  • the distance between a point on tensile wall arc 36 and centre point C defines a tensile wall arc radius Rt.
  • the compressive and tensile wall arcs 38, 36 are concentric and the radii Rc and Rt are equal such that the wall arcs 38, 36 define portions of a common circle.
  • compressive wall 30 and tensile wall 32 define portions of a common cylinder.
  • the compressive wall circular arc 38 and tensile wall circular act 36 define arc angles Be and 9t respectively.
  • the length of the compressive wall circular arc 38 is double the length of the tensile wall circular arc 36 such that 9c is double 0t.
  • the radii Rc and Rt are equal to the arc length of the tensile wall circular arc 36. Accordingly, Qi is
  • the cross sectional profile of the support member 1 1 is symmetrical about a central axis X which extends between a midpoint on the compressive wall circular arc 38 and a midpoint on the tensile wall circular arc 36.
  • the symmetrical profile facilitates the even distribution of load across the support member profile.
  • the diameter 0 of the support member will vary and that a support pole 10 may include a plurality of support members 1 1 , each having a different diameter.
  • the diameter 0 is assumed to be 22.60mm.
  • the radii Rc and Rt are therefore 1 1 .3mm and the length of tensile wall arc 36 is 1 1 3mm.
  • the length of the compressive wall arc is double that of the tensile wall arc such that the length of compressive wall arc 38 is 22.6mm.
  • the length L of sidewalls are approximately equal to 1 .46 multiplied by the radii (1 1 .3mm) and therefore L is approximately equal to 16.5mm.
  • the ratio of the compressive wall arc length to the tensile wall arc length is 2: 1 .
  • the provision of a compressive wall 30 having an arc length double that of the tensile wall 32 advantageously optimises the distribution of composite material insofar as particular composite materials such as carbon fibre are approximately twice as strong under tension as they are under compression.
  • alternative composite materials such as glass fibre may lead a person skilled in the art to select an alternative arc length ratio as deemed appropriate for the particular properties of the composite material being used. Notwithstanding these variations in arc length ratio, it will appreciated that all fibre composite materials are typically stronger in tension than in compression. Accordingly, variations in arc length ratio are unified under the inventive concept of providing a compressive wall arc length that is greater than the tensile wall arc length.
  • composite support pole 10 comprises a plurality of composite support members.
  • a pair of support members comprising a first support member 40 and a second support member 42.
  • Second support member 42 is sized slightly smaller than first support member 40 such that second support member 42 may be fitted within the opening defined by first support member 40.
  • the sectional profile of second support member 42 is therefore scaled down in in size but otherwise equivalent to the sectional profile of first support member 40. In this regard, a telescopic engagement is permitted between the first and second support members 40, 42.
  • support pole 10 comprises five support members including a first support member 64 which is the outermost support member in the series, a second support member 66 telescopically sleeved within the first support member 64, a third support member 68 telescopically sleeved within the second support member 66, a fourth support member 70 telescopically sleeved within the third support member 66 and a fifth support member 72 which is also the innermost support member and is telescopically sleeved within the fourth support member 66.
  • the five support members 64, 66, 68, 70, 72 are sequentially decreasing in size to permit telescopic or sleeving engagement between adjacent support members and therefore allowing the length of pole 10 to be adjusted by the operator.
  • Four clamps 44 are connected to the edge of each support member into which another support member is inserted i.e. all support members except the fifth support member 72.
  • Each clamp 44 is associated with a pair of support members comprising an outer support member and an inner support member which is telescopically sleeved within the outer support member.
  • Each clamp 44 includes a collar portion 46 for engaging the outer support member and a clamping portion 48 for engaging the inner support member.
  • each clamp 44 are similar to conventional tube clamps in that they include a pair of flexibly deformable arms which define an aperture into which a respective support member is inserted. During operation, the end of each arm is pulled together by, for example, a bolt, which operates to reduce the size of the aperture and thereby clamp the support member within the aperture.
  • the clamping arms in the collar portion 46 and clamping portion 48 are shaped to correspond with the unique, non-circular profile of the support members.
  • clamps 44 operate in a similar manner.
  • the second support member 66 will comprise the outer support member and the third support member 68 will comprise the inner support member.
  • collar portion 46 includes a pair of clamping arms extending substantially around perimeter of the outer support member i.e. the second support member 66.
  • a pair of bolts 50 connects the ends 60 of the collar portion clamping arms and, when tightened, flexibly deforms the arms of the collar portion 46 to secure the collar portion 46 to the edge of the second support member 66.
  • Clamping portion 48 is connected to the collar portion 46 via connection portion 52 and is generally similar in profile and function to the collar portion 46 except scaled down in size so as to correspond with the reduced size of the inner support member (i.e. the third support member 68) which is sleeved within the outer support member (i.e. the second support member 66).
  • clamping portion 48 when tightened, operates to clamp the inner support member (the third support member 68) and thereby retain the inner support member against movement relative to the collar member 46 and therefore relative to the second support member 66 to which the collar portion 46 is secured.
  • the ends 60 of the collar portion arms are secured by collar bolts 50
  • the ends 62 of the clamping portion arms are associated with a cam lever 54 which permits manual adjustment between a clamped mode in which the inner support member is clamped by the clamping portion 48 and an undamped mode in which the inner support member is undamped and therefore permitted to telescopically slide within the outer support member.
  • a clamping bolt 58 extends through the ends 62 of the arms of the clamping portion 48 and also through an opening in the cam lever 54. When manually actuated to the clamped mode, cam 56 is compressed between a head of the bolt 58 and one of the ends 62 of the arms thereby exerting a clamping load on the inner support member.
  • the support pole 10 provides a number of additional advantages insofar as its user friendliness. Still referring to Figure 1 , it will be appreciated that the support member that is manually gripped by an operator 18 is the outermost support member. Having regard to the unique non-circular profile of support members 1 1 as discussed above, it will also now be appreciated that support pole 10 is economically advantageous and easier to grasp than a conventional circular pole. In addition to being more comfortable for an operator to handle, the unique profile of the support member is less likely to rotate in an operators hand and provides more control to the operator during use.
  • the unique profile of the present invention inherently prevents relative rotation between the sleeved support members.
  • the innermost or fifth support member 72 is comprised in this embodiment by an adaptor member 72 which facilitates connection of a utility implement such as a cleaning element to the free end of the pole 10.
  • Figure 8 illustrates a truncated version of adaptor member 72 which, as illustrated in Figure 7, may have a length equal or similar to the length of the other support members.
  • the adaptor member may be formed as the relatively short member illustrated in Figure 8, to allow for convenient changing of the adaptor member depending on the type of implement required for connection to pole 10.
  • Adaptor member 72 includes, at a first end, a hollow circular region 76 defining a circular aperture 74 for receiving a circular member extending from the implement (not shown) such as the handle of a cleaning squeegee or a paint brush.
  • a connection region 73 having the equivalent non-circular or rounded trapezium profile to the support pole 10.
  • the connection region 73 is therefore configured for telescopic sleeving within the fourth support member 70 and for engagement with a clamp 44, as illustrated in Figure 7.
  • a transition region 80 is located between the first and second ends in which the profile of the connection region 73 transitions into the profile of the hollow circular region 76.
  • FIG 9 there is illustrated a reverse perspective of the support pole 10 that is illustrated in Figure 7, with the addition of a hose 28 extending through an internal passageway defined by the support pole 10.
  • hose 28 As noted above, and illustrated in Figure 1 , in cleaning applications it is typically desirable to supply the cleaning element connected to the free end of the pole with a water supply in order to facilitate the cleaning process.
  • the function of hose 28 is best shown with reference to Figure 10 which illustrates support pole 10 in its retracted condition.
  • Hose 28 protrudes from the pole lower end 24, extends through the length of support pole 10 and emerges from the pole upper end 26.
  • a hose fork 82 is provided to divide the hose fluid flow across both sides of a cleaning brush 84.
  • FIG. 10 illustrates a hinge mechanism is provided at the pole upper end 26.
  • Hinge 86 is connected to the adaptor member 72 and facilitates adjustment of the angle between support pole 10 and cleaning brush 84.
  • Figure 1 1 provides a closer perspective of the hinge 86 which includes an adjustment knob 88.
  • FIG 12 there is illustrated an exploded view of hinge 86 which comprises a pair of outer discs 90 secured to a square female connector 94. A square male connector 96 is secured to adaptor member 72.
  • Male connector 96 is sized to sleeve within female connector 96 and to be secured thereto by a bolt or pin or other equivalent fastener (not shown) which extends through respective apertures 98 in the male and female connectors 94, 96.
  • Hinge 86 further includes a pair of inner discs 92 positioned between the outer discs 90 and secured to an implement support 100 which, as illustrated in Figure 1 1 , is connected to the cleaning brush 84 via a mounting bracket 102.
  • inner discs 92 are sandwiched between outer discs 90.
  • a bolt 104 extends through a central aperture in the outer discs 90, inner discs 92 and knob 88.
  • the head 106 of bolt 104 is hexagonal and seats within a corresponding hexagonal recess 108 in the exterior surface of one of the outer discs 90.
  • Bolt 106 engages with a nut 1 10 which is also hexagonal and is similarly seated within a hexagonal recess in an external surface of knob 88. Accordingly, rotation of nut 106 is controlled by rotation of knob 88 and bolt 104 is secured against rotation relative to outer discs 90. In this regard, rotation of knob 88 tightens the nut 88 onto bolt 106 and operates to compress the outer discs 90 onto the inner discs 92 to prevent relative rotation therebetween.
  • outer discs 90 and the exterior surface of inner discs 92 are corrugated to provide a series of radial gripping teeth which facilitates engagement between the inner and outer discs 92, 90.
  • knob 88 may loosen to adjust the angle between the implement support 100 and the support pole 10. Once the desired angle is obtained, the operator may tighten knob 88 thereby engaging the inner and outer sides 92, 90 and securing the support member 100 are the desired angle, relative to the support pole.
  • Figure 13 illustrates a 45° adaptor 120 which may be used as an alternative to the hinge arrangement illustrated in Figures 10-12 in order to connect a free end of the support pole to a cleaning element.
  • Adaptor 120 includes a square male connector 122 for insertion into a female connector on the cleaning element, for example the female connector 102 illustrated in Figure 1 1 .
  • Male connector 122 includes a pair of opposing apertures 122 facilitating a pin connection to the cleaning element.
  • Adaptor 120 further includes a stem 124 having a longitudinal axis which is angled 45° from a longitudinal axis of the male con nector 122.
  • Stem 124 is formed with an equivalent non-circular profile as each of the support members.
  • Stem 124 is shaped and sized for insertion into the innermost support member of the support pole and can be retained in place by a suitably sized pole clamp.
  • Adaptor 120 may replace the adaptor member 72 illustrated in Figure 8.
  • 45° adaptor 120 can be connected to the support pole in one orientation only and in which the cleaning element will be angled toward the tensile wall of the support pole.
  • the use of 45° adaptor 120 can prevent an operator from accidently operating the support pole in an undesirable inverted orientation (in which the smaller tensile wall faced upwards) as this would result in the cleaning element facing away from the overhead cleaning surface which would alert the operator that the support pole has been inverted from the desired orientation.
  • Use of 45° a daptor 120 therefore helps to ensure the support pole is operated in the desired orientation for overhead window cleaning i.e. the smaller tensile wall facing downwards and the larger compressive wall facing upwards.
  • FIG 14 there is illustrated an cross section of a support member according to the present invention with four reinforcement layers 1 12 provided on the inside of each of the tensile wall 32 and the compressive wall 30.
  • the compressive and tensile walls 30, 32 may be formed with additional layers of composite material comprising reinforcement layers 1 12 in order to provide greater strength, stiffness or other improvements in performance.
  • four reinforcement layers are provided such that the compressive and tensile walls 30, 32 are four layers thicker than the side walls 34.
  • side walls 34 may be formed by 5 layers of composite material.
  • each of the inside of the tensile and compressive walls 32, 30 will therefore comprise a total of nine layers of composite material.
  • various quantities of reinforcement layers may be used, for example 2, 3, 4, 5 or more reinforcement layers may be used.
  • support members of the present invention may be provided with no reinforcement layers in which case the compressive and tensile walls 30, 32 will be formed with the same number of layers as the side walls 34.
  • Figures 15 to 17 illustrate an alternative pole cross section according to an embodiment of the present invention, in which the compressive and tensile walls are longer i.e. more rounded as compared to the previously described and illustrated pole cross-sections.
  • Figure 16 includes specific radian ratios of the alternative cross- section and Figure 17 illustrates a further alternative wherein the pole structure is comprised of a plurality of layers.
  • the modified profile illustrated in Figures 15 to 17 provides a lesser bend at the interface between the sidewalls 340 and the compressive wall 300 and tensile walls 320 as compared to the cross sections illustrated in Figures 3 and 4.
  • This modified cross section may assist and simply the manufacturing process insofar as the additional curvature can improve tensile and compressive strength such that less reinforcement is required at the tensile and compressive walls 320, 240.
  • the radius C w of the compressive wall arc in the cross sections illustrated in Figures 15 - 17 is larger than the radius Tw of the tensile wall arc.
  • the arc of the tensile wall can have a radius equal to a radius of the circular arc defining the compressive wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

L'invention concerne un poteau de support composite destiné à supporter une charge suspendue au niveau d'une de ses extrémités libres et comprenant au moins un élément de support composite. L'élément de support comprend une paroi de traction destinée, lors de l'utilisation, à supporter une charge de traction, la paroi de traction étant formée sous la forme d'un segment cylindrique ayant un arc circulaire qui délimite une longueur d'arc de paroi de traction. L'élément de support comprend également une paroi de compression qui s'oppose à la paroi de traction, destinée, lors de l'utilisation, à supporter une charge de compression, la paroi de compression étant formée sous la forme d'un segment cylindrique ayant un arc circulaire qui délimite une longueur d'arc de paroi de compression qui est supérieure à la longueur d'arc de paroi de traction. L'élément de support comprend en outre une paire de parois latérales opposées s'étendant entre les parois de traction et de compression, les parois latérales étant planes ou ayant une courbure qui est inférieure à la courbure des parois de traction et de compression.
PCT/AU2018/050186 2017-03-01 2018-03-01 Poteau de support composite WO2018157209A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2018228275A AU2018228275B2 (en) 2017-03-01 2018-03-01 Composite support pole
CN201890000667.3U CN212079865U (zh) 2017-03-01 2018-03-01 复合支撑杆
AU2021100579A AU2021100579B4 (en) 2017-03-01 2021-01-29 Composite support pole

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2017900689A AU2017900689A0 (en) 2017-03-01 Composite support pole
AU2017900689 2017-03-01

Publications (1)

Publication Number Publication Date
WO2018157209A1 true WO2018157209A1 (fr) 2018-09-07

Family

ID=63369561

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2018/050186 WO2018157209A1 (fr) 2017-03-01 2018-03-01 Poteau de support composite

Country Status (3)

Country Link
CN (1) CN212079865U (fr)
AU (2) AU2018228275B2 (fr)
WO (1) WO2018157209A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210396257A1 (en) * 2020-06-22 2021-12-23 Unger Marketing International, Llc Telescopic pole for a cleaning implement
EP3933148A4 (fr) * 2019-05-23 2022-04-20 Jong Hee Lee Mât télescopique
WO2022094168A1 (fr) * 2020-10-30 2022-05-05 Unger Marketing International, Llc Outil de nettoyage télescopique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240032742A1 (en) * 2022-07-29 2024-02-01 Unger Marketing International, Llc Cleaning tool accessory attachment for cleaning tools

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653142A (en) * 1984-09-19 1987-03-31 Reach High Products, Inc. Extensible tool handle
US6001034A (en) * 1994-02-03 1999-12-14 Huffy Corporation Basketball backboard support pole
US6213672B1 (en) * 1997-10-21 2001-04-10 George J. Varga Telescoping pole & cleaning tool
EP1787693A1 (fr) * 2005-11-17 2007-05-23 Black Diamond Equipment AG Dispositf amélioré de bâton téléscopique
WO2011133645A2 (fr) * 2010-04-20 2011-10-27 Conett, Inc. Poteau composite et procédé de fabrication associé
US20140090681A1 (en) * 2012-10-01 2014-04-03 Bravo Sports Height-adjustable canopy leg
GB2549812A (en) * 2016-09-19 2017-11-01 Ionic Systems Ltd Window cleaning pole

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045546A1 (fr) * 1999-12-21 2001-06-28 Kao Corporation Structure de raccordement de tubes et outil de nettoyage
AU2011101506A4 (en) * 2011-11-20 2011-12-15 Harrison Klem Tait Modular-scopic Telescopic Pole System

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653142A (en) * 1984-09-19 1987-03-31 Reach High Products, Inc. Extensible tool handle
US6001034A (en) * 1994-02-03 1999-12-14 Huffy Corporation Basketball backboard support pole
US6213672B1 (en) * 1997-10-21 2001-04-10 George J. Varga Telescoping pole & cleaning tool
EP1787693A1 (fr) * 2005-11-17 2007-05-23 Black Diamond Equipment AG Dispositf amélioré de bâton téléscopique
WO2011133645A2 (fr) * 2010-04-20 2011-10-27 Conett, Inc. Poteau composite et procédé de fabrication associé
US20140090681A1 (en) * 2012-10-01 2014-04-03 Bravo Sports Height-adjustable canopy leg
GB2549812A (en) * 2016-09-19 2017-11-01 Ionic Systems Ltd Window cleaning pole

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3933148A4 (fr) * 2019-05-23 2022-04-20 Jong Hee Lee Mât télescopique
US11466472B2 (en) 2019-05-23 2022-10-11 Jong Hee Lee Telescopic mast
US20210396257A1 (en) * 2020-06-22 2021-12-23 Unger Marketing International, Llc Telescopic pole for a cleaning implement
US11698092B2 (en) * 2020-06-22 2023-07-11 Unger Marketing International Telescopic pole for a cleaning implement
WO2022094168A1 (fr) * 2020-10-30 2022-05-05 Unger Marketing International, Llc Outil de nettoyage télescopique
EP4203757A1 (fr) 2020-10-30 2023-07-05 Unger Marketing International, LLC Outil de nettoyage télescopique
EP4203757A4 (fr) * 2020-10-30 2025-03-19 Unger Marketing International, LLC Outil de nettoyage télescopique

Also Published As

Publication number Publication date
AU2021100579B4 (en) 2021-09-02
CN212079865U (zh) 2020-12-04
AU2021100579A4 (en) 2021-04-15
AU2018228275A1 (en) 2019-09-19
AU2018228275B2 (en) 2022-10-20

Similar Documents

Publication Publication Date Title
AU2021100579A4 (en) Composite support pole
AU2007302621B2 (en) Extension pole apparatus for sander
US11440765B1 (en) Handheld system and method for pulling wire
DE102008007520A1 (de) Oberflächenbearbeitungsgerät
CN105762700B (zh) 电缆放线人工牵引辅助工具
JP2023548322A (ja) 伸縮式洗浄用具
CN1788129A (zh) 一种用于钢筋加固的连接装置
CN201437220U (zh) 一种多功能钳子
CN205377194U (zh) 自锁电缆固定装置
US10716438B2 (en) Water-fed pole for window cleaning
CN220533988U (zh) 一种用于汽车顶棚加工的新型夹具
EP1627153B1 (fr) Manche telescopique
CN214658284U (zh) 一种钢筋快接套筒
CN212095101U (zh) 一种钢管焊接对口器
CN112112262B (zh) 一种可调节连接撑以及可调节连接撑的安装方法
CN114211455A (zh) 一种用于长螺杆螺栓的快速拆装装置
CN112854608A (zh) 一种钢筋快接套筒
CN214063676U (zh) 一种钢丝绳接头处连接结构
CN215054587U (zh) 一种钢筋快接器
CN218150667U (zh) 一种房建工程的建筑围护结构
CN220954568U (zh) 建筑施工用外墙脚手架加固机构
CN109930837A (zh) 一种用于钢绞线的牵引工具
CN2360496Y (zh) 钢筋
CN211018079U (zh) 一种电缆终端加工辅助工具
CN214323433U (zh) 一种用于金属材料施工用辅助截断设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18760360

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018228275

Country of ref document: AU

Date of ref document: 20180301

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 18760360

Country of ref document: EP

Kind code of ref document: A1