[go: up one dir, main page]

WO1993018895A1 - Pince a denuder les fils - Google Patents

Pince a denuder les fils Download PDF

Info

Publication number
WO1993018895A1
WO1993018895A1 PCT/US1992/002060 US9202060W WO9318895A1 WO 1993018895 A1 WO1993018895 A1 WO 1993018895A1 US 9202060 W US9202060 W US 9202060W WO 9318895 A1 WO9318895 A1 WO 9318895A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire stripper
lower body
cable
body member
upper clamping
Prior art date
Application number
PCT/US1992/002060
Other languages
English (en)
Inventor
Richard A. Steiner
Charles A. Gargano
Original Assignee
Rostra Tool Company
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
Application filed by Rostra Tool Company filed Critical Rostra Tool Company
Priority to PCT/US1992/002060 priority Critical patent/WO1993018895A1/fr
Priority to US07/952,905 priority patent/US5325587A/en
Publication of WO1993018895A1 publication Critical patent/WO1993018895A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
    • H02G1/1204—Hand-held tools
    • H02G1/1221—Hand-held tools the cutting element rotating about the wire or cable
    • H02G1/1224—Hand-held tools the cutting element rotating about the wire or cable making a transverse cut

Definitions

  • the present invention relates to wire strippers generally and, more particularly, but not by way of limitation, to a novel wire stripper of one piece molded construction that is simple to use and economical to manufacture.
  • Wire usually refers to a central electrical conductor surrounded by a layer of insulation
  • “cable” usually refers to a central conductor surrounded by insulation, with a second conductor of foil or braid surrounding the first layer of insulation and a second layer of insulation surrounding the second conductor.
  • “Wire” and “cable” at times may be used herein interchangeably, as will be clear from the context.
  • One type of wire stripper long known in the art comprises a pair of opposed blades having handles at one end thereof, which handles are pivotally attached together between the blade ends and the handle ends.
  • the blades have opposed, aligned pairs of sharp notches along their lengths such that when the blades are manually urged together, a selected pair of notches closes about, and cuts through, the insulation on a wire.
  • Rotating the stripper in its closed position in a circular motion of at least 180 degrees about the wire in a plane perpendicular to the axis of the wire severs the insulation and allows it to be pulled off the end of the wire.
  • the pairs of notches are variously sized to cut insulation on wires or cables of several different diameters. While this type of wire stripper is somewhat satisfactory, it is inconvenient to use, in part, because of limitations of a human arm and wrist in rotating the stripper. Such type of wire stripper is also relatively expensive to construct.
  • a recent development in wire strippers has provided a wire stripper of molded plastic material which is generally in the shape of a clothespin, with the proximal ends of two straight members being biased together by an integral spring member, the bridging member being put in a tensioned state by means of the manual forcing together of the distal ends of the straight members.
  • Removably disposed in the proximal end of one of the straight members is a cassette containing two cutting blades in selected positions.
  • the stripper is "opened" by the manual forcing together of the distal ends of the straight members, the cable is placed against a stop in the other one of the straight members, and the distal ends of the straight members are released so as to bring the cable in cutting engagement with the blades.
  • Relative rotation of the wire stripper and the cable about the axis of the latter causes the cutting through of the outer and inner layers of the cable.
  • wire stripper is that it is difficult to rotate around the cable with one finger.
  • a wire stripper comprising: a generally elongate lower body member having first and second ends; a generally elongate upper clamping member having first and second ends and generally overlying said lower body member; an integral flexible hinge member joining said lower body member and said upper clamping member intermediate said respective first and second ends; integral biasing means disposed at and between said first ends, so as to bias said first ends apart by rotation of said upper clamping member around said flexible hinge member, and so as to draw said second ends toward each other, and to permit said second ends to be drawn apart by the further tensioning of said biasing means by the rotation of said upper clamping member around said hinge member; and a cutting blade disposed in said second end of said lower body member along the major axis of said lower body member and extending above the upper surface thereof, such that a cable inserted between said second ends when said first ends are drawn together will come into cutting engagement with said cutting blade when said second ends are subsequently drawn together, and one or more layers
  • Figure 1 is an enlarged, side elevational view of one embodiment of a wire stripper constructed according to the present invention shown as it is produced.
  • Figure 2 is a side elevational view of another embodiment of a wire stripper constructed according to the present invention, shown in closed position.
  • Figure 3 is a side elevational view of the wire stripper of Figure 2, shown in open position.
  • Figure 4 is a side elevational view of a cable with layers thereof stripped with the wire stripper of
  • Figure 5 is a top plan view of either of the wire strippers of Figures 1 and 2.
  • Figure 6 is a bottom plan view of either of the wire strippers of Figures 1 and 2.
  • Figure 7 is a side elevational view of the wire stripper of Figure 2.
  • Figure 1 illustrates a wire stripper, generally indicated by the reference numeral 10, constructed according to the present invention, after it has been injection molded of a suitable, relatively rigid, thermoplastic material.
  • Wire stripper 10 includes a lower body portion, generally indicated by the reference numeral 12, the lower body portion having first and second ends.
  • Lower body portion 12 includes a circular member 14 comprising the first end thereof and defining therethrough a circular opening 16.
  • the second end of lower body portion 12 comprises a blade holding portion 28 into which is integrally molded a cutting blade 30 which protrudes above the lower body portion into semicircular openings 32 and 34 defined in the upper surface of the lower body portion.
  • An upper clamping member generally indicated by the reference numeral 40, having first and second ends 42 and 44, is attached to lower body portion 12 at approximately the midpoints of each by a relatively thin (in side view), flexible hinge member 46.
  • First end 42 terminates in an integral,resilient spring arm 50 having a cylindrical member 52 at the distal end thereof.
  • Circular member 14 includes, defined in the outer periphery thereof, a channel 54 sized for the 5 insertion therein of cylindrical member 52.
  • Second end 44 includes semicircular openings 56 and 58 defined in the lower surface thereof in facing relationship with semicircular openings 32 and 34, respectively, in lower body member 12.
  • Lower body portion 12 may include an integral, resilient clip 64, so that wire stripper 10 may be conveniently clipped to a pocket or the like.
  • blade 30 includes a V- notch 70 defined in a portion thereof.
  • FIG. 2 illustrates another wire stripper, generally indicated by the reference numeral 10' , identical to wire stripper 10 described above, with the exception of a cutting blade 30' which will be 5 described below.
  • spring arm 50' has been bent so that cylindrical member 52' has been inserted in channel 54' . This has tensioned spring arm 50', so as to rotatingly bias upper clamping 40 clockwise by the flexure of hinge member
  • Figure 3 illustrates wire stripper 10' moved to its open position. This has been achieved by the user thereof inserting an index finger through hole 16', placing a thumb on first end 42 ' , and pressing the index finger and thumb together. This action causes upper clamping member 40 to rotate counterclockwise by the flexure of hinge member 46' to the position shown with the lower edge of first end 42' engaging the upper edge of circular member 14' and further tensioning spring arm 50'. In the open position of wire stripper 10', second end 44' has been moved away from blade holding portion 28'.
  • Figure 4 shows a cable 90 after being cut and stripped with wire stripper 10'. Cable 90 includes an outer insulation jacket 92, a braid layer 94, an insulation core 96, and a center conductor 98. Referring also to Figures 2 and 3, the procedure by which cable 90 has been cut and stripped will now be described.
  • wire stripper 10' is opened ( Figure 3).
  • the end of cable 90 is inserted a first selected distance into the space defined between semicircular openings 34' and 58'.
  • Wire stripper 10' is then released and allowed to close ( Figure 2).
  • This brings cable 90 into cutting relationship with cutting blade 30' which protrudes substantially into semicircular opening 34'.
  • wire stripper 10' is rotated relative to cable 90 about the axis of the cable in a plane orthogonal to the axis of the cable, so that cutting blade 30' cuts through and severs the outer layers of the cable down to center conductor 98.
  • Notch 70 r assists in this operation as is more fully described in the above-referenced patent.
  • the outer layers of cable 90 can then be slid off the end of the cable.
  • wire stripper 10' is opened ( Figure 3) and the end of cable 90 is inserted a second selected distance (greater than the first selected distance) into the space defined between semicircular openings 32' and 56'.
  • Wire stripper 10' is then released and allowed to close ( Figure 2). This brings cable 90 into cutting relationship with cutting blade 30' which protrudes into semicircular opening 32 ' a distance less than the distance cutting blade protruded into semicircular opening 34.
  • wire stripper 10' With an index finger inserted into opening 16', wire stripper 10' is rotated relative to cable 90 about the axis of the cable so that cutting blade 30' cuts through and severs braid layer 94, and the cut portion of the braid can then be slid off the end of the cable. In a similar manner, wire stripper 10' is used to cut through and sever outer insulation jacket 92 a third selected distance (greater than the second selected distance) by inserting cable 90 a selected distance into the space defined between semicircular openings 36 and 60.
  • cutting blade 30 has been provided for two-level cutting in the same manner as described above for three-level cutting with reference to Figures 2-4.
  • Blades 30 and 30' can be economically molded in place to a preset dimension to provide one-piece wire strippers 10 and 10', respectively.
  • wire stripper 10 or 10' are fixed, that embodiment can be used to cut and strip a range of cable sizes.
  • a wire cutter dimensioned nominally to cut and strip 0.250-inch diameter cable can satisfactorily cut and strip cables in the diameter range of 0.218 to 0.312 inch.
  • a particular advantage of the present invention is that the distance from the end of cable 90 that any particular cut is made is not fixed and can be determined by the user in the field.
  • a "STRIP GAGE" 100 may be molded into wire stripper 10' as is shown on Figure 7. the user can then hold the end of a cable against the "STRIP GAGE" to see where the various cuts should be made.
  • Wire strippers 10 and 10' may be economically injection molded of any suitable material, with cutting blades 30 and 30' being molded into the wire strippers.

Landscapes

  • Knives (AREA)

Abstract

Dans un mode de réalisation préféré, la pince à dénuder les fils (10) comprend: un élément de corps inférieur (12) généralement oblong, présentant une première et une deuxième extrémités; un élément de serrage supérieur (40) généralement oblong, présentant une première et une deuxième extrémités et situé généralement au-dessus de l'élément de corps inférieur; un élément de charnière solidaire flexible (46) reliant l'élément de corps inférieur et l'élément de serrage supérieur en un point situé entre les extrémités respectives desdits éléments; un élément de sollicitation solidaire (50) situé entre les premières extrémités, de manière à écarter ces premières extrémités par rotation de l'élément de serrage supérieur autour de l'élément de charnière flexible, et à rapprocher les deuxièmes extrémités, et de manière à écarter les deuxièmes extrémités lorsque l'élément de sollicitation est mis sous tension, par la rotation de l'élément de serrage supérieur autour de l'élément de charnière; une lame de coupe (30) située dans la deuxième extrémité de l'élément de corps inférieur le long de l'axe principal de cet élément et s'étendant au-dessus de sa surface supérieure, de sorte qu'un fil ou câble introduit entre les deuxièmes extrémités lorsque les premières extrémités sont rapprochées entre en contact avec la lame lorsque les deuxièmes extrémités se rapprochent par la suite, une ou plusieurs couches d'isolation du fil ou câble étant sectionnée(s) par cette lame lorsqu'on fait tourner la pince autour du fil dans un plan orthogonal à l'axe de ce dernier.
PCT/US1992/002060 1992-03-16 1992-03-16 Pince a denuder les fils WO1993018895A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1992/002060 WO1993018895A1 (fr) 1992-03-16 1992-03-16 Pince a denuder les fils
US07/952,905 US5325587A (en) 1992-03-16 1992-03-16 Wire stripper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1992/002060 WO1993018895A1 (fr) 1992-03-16 1992-03-16 Pince a denuder les fils

Publications (1)

Publication Number Publication Date
WO1993018895A1 true WO1993018895A1 (fr) 1993-09-30

Family

ID=22230883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002060 WO1993018895A1 (fr) 1992-03-16 1992-03-16 Pince a denuder les fils

Country Status (1)

Country Link
WO (1) WO1993018895A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2079137A1 (fr) * 2008-01-11 2009-07-15 Nusharp Inc. Couteau à dénuder
USD1055653S1 (en) * 2023-09-14 2024-12-31 Huyu DU Wire stripper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677702A (en) * 1986-01-17 1987-07-07 Ford Motor Company Wire insulation stripper guide
US4799406A (en) * 1986-06-25 1989-01-24 Diaz De Guerenu Aguirrebeitia Apparatus for stripping electrical wires and the like
US4912847A (en) * 1988-12-05 1990-04-03 Bradshaw William T Cutting tool for `entx`-type plastic conduit
US4958433A (en) * 1988-11-16 1990-09-25 Pressmaster Tool Ab Cable stripping tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677702A (en) * 1986-01-17 1987-07-07 Ford Motor Company Wire insulation stripper guide
US4799406A (en) * 1986-06-25 1989-01-24 Diaz De Guerenu Aguirrebeitia Apparatus for stripping electrical wires and the like
US4958433A (en) * 1988-11-16 1990-09-25 Pressmaster Tool Ab Cable stripping tool
US4912847A (en) * 1988-12-05 1990-04-03 Bradshaw William T Cutting tool for `entx`-type plastic conduit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2079137A1 (fr) * 2008-01-11 2009-07-15 Nusharp Inc. Couteau à dénuder
USD1055653S1 (en) * 2023-09-14 2024-12-31 Huyu DU Wire stripper

Similar Documents

Publication Publication Date Title
US5325587A (en) Wire stripper
US4805302A (en) Wire stripper
US6128976A (en) Single drop trimmer
US6058606A (en) Apparatus for cutting or stripping cables
US4726369A (en) Tool and method for steering an angioplasty guide wire
US6510611B2 (en) Cable jacket stripping tool
EP0150113A2 (fr) Outil à dénuder pour câble coaxial et méthode de préparation d'extrémité
US4026017A (en) Cable tool
US6253641B1 (en) Single drop trimmer with limited cartridge release
JP2980568B2 (ja) ケーブルストリッパ
US11982858B2 (en) Cable stripping tool
US6526661B1 (en) Cutting and stripping tool
JPS6133329B2 (fr)
US4885898A (en) Apparatus for processing cut flowers or similar articles
WO1993018895A1 (fr) Pince a denuder les fils
US4104791A (en) Stripper for coated wires
US6209550B1 (en) Flossing tool
US4047297A (en) Precision small wire stripper
US3872590A (en) Electricians{3 {0 tools
CA1202767A (fr) Denudeuse de conducteurs
EP0146397A2 (fr) Dispositif dénudeur de fil
CA1124045A (fr) Gainage de conducteurs d'electricite
US4667406A (en) Cable end stripping device
US4215470A (en) Cable cover slitting tool
US20030154604A1 (en) Process and tool for cutting monofilament line

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

122 Ep: pct application non-entry in european phase