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WO1992008032A1 - Echelle de secours pliable - Google Patents

Echelle de secours pliable Download PDF

Info

Publication number
WO1992008032A1
WO1992008032A1 PCT/GB1990/001657 GB9001657W WO9208032A1 WO 1992008032 A1 WO1992008032 A1 WO 1992008032A1 GB 9001657 W GB9001657 W GB 9001657W WO 9208032 A1 WO9208032 A1 WO 9208032A1
Authority
WO
WIPO (PCT)
Prior art keywords
rungs
escape ladder
webbing
collapsible
ladder according
Prior art date
Application number
PCT/GB1990/001657
Other languages
English (en)
Inventor
John Nall
Original Assignee
John Nall
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 John Nall filed Critical John Nall
Publication of WO1992008032A1 publication Critical patent/WO1992008032A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/52—Ladders in general with non-rigid longitudinal members
    • E06C1/525—Ladders in general with non-rigid longitudinal members made of a continuous strip of material
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/52—Ladders in general with non-rigid longitudinal members
    • E06C1/56—Rope or chain ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/14—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with non-rigid longitudinal members, e.g. rope or chain ladders, ladders of the lazy-tongs type

Definitions

  • THIS INVENTION concerns a collapsible escape ladder of the kind which may be folded into a compact form for storage and which may be released to be suspended from, for example, a window opening to permit escape from an upper floor of a building or other elevated position.
  • Conventional rope ladders in which a series of rigid rungs are attached at spaced intervals along a pair of ropes, may be rolled for storage but they still remain bulky, and require a hook or anchor rope at the upper end for attachment to a fixed point when extended for use.
  • An object of the present invention is to provide a collapsible escape ladder which may be closed up for storage in a very compact form, and including means whereby the ladder may be instantly and removably located against, for example, the sides of a window opening with simultaneous release of the ladder to an extended condition.
  • a collapsible escape ladder comprises a series of rigid rungs with their end regions attached at spaced positions along a pair of foldable longitudinal members such that the rungs may be closed together in parallel relationship for storage, or separated for use by permitting the longitudinal members to assume an unfolded condition, characterised by at least one retaining member adapted to engage and maintain the rungs in the closed condition and at least one anchor member at the top of the ladder, movable to extend outwardly beyond the sides of the ladder to be disposed generally horizontally for location against the sides of, for example, an upper floor window opening, to enable the ladder to be suspended therefrom.
  • Fig. 1 is a perspective view of a collapsible escape ladder made in accordance with the invention, in a folded or storage condition;
  • Fig. 2a is a perspective view of an upper part of the ladder shown in a partly unfolded condition
  • Figs. 2b & 2c are cross-section and
  • Fig. 3 is a perspective view of the upper region of the ladder in an open condition ready for use
  • Fig. 4 is a perspective view taken from the inside of a window opening, and showing the top of the ladder anchored thereat.
  • a set of such rungs 12 are attached together at spaced positions along a pair of vertical webbing strips 13.
  • each webbing strip 13 passes through a slot 14 in the upper end region of each rung 12, and immediately beneath the slot the webbing is formed into a loop 15 as can be seen from Fig. 2c through which passes a retaining rod 16 contained within the channel on the underside of the rung.
  • the rod 16 is prevented from dislodgement by the
  • the inturned edges of the channel sectioned rungs may be upturned in the end regions, as illustrated at 17 in Fig. 2b.
  • webbing 13 may be provided as two separate parallel strips each passing down one side of the ladder, ' it may instead be a single strip which passes under the lowermost rung 12.
  • a pair of channel sectioned arms 18 of aluminium Pivotally attached to the end regions of the top member 10 are a pair of channel sectioned arms 18 of aluminium. As can be seen from Fig. 1, the arms 18, when pivoted downwardly, partially enclose the end regions of the rungs 12 in their folded condition.
  • Pivotally attached to the end regions of the bottom rung 12 are a pair of channel sectioned extension arms 19 one at each side of the ladder, which together with arms 18, retain the rungs 12 in their folded or collapsed condition. Pins (not shown) or other similar means may be used to retain arms 18 and 19 attached until the ladder is required for use.
  • Bracket 20 Extending upwardly at right angles from top member 10 is a bracket 20 to which is adjustably bolted a hook-like member 21 for a purpose to be described.
  • a ladder of some 6 metres or more may be reduced to a compact height of less than one metre, and so may be stowed in a cupboard ready for use.
  • extension arms 19 and arms 18 are separated and arms 18 are pivoted outwardly to be generally aligned with and extending transversely from top member 10 as illustrated at the top of Fig.
  • the rungs 12 may be passed outwardly through the opening and dropped away to assume a fully open and operative condition with the webbing 13 fully extended and the entire ladder suspended on the cables
  • cables 1 1 may be replaced by an extended length of the webbing 1 3
  • arms 1 8 may be sufficiently long to extend to the bottom of the folded ladder .
  • I t is however preferable to split the arms with extensions 1 9 so that, as can be seen in Fig. 3 , the arms may be short enough to be accommodated close to the edge of a window recess .
  • the continuous or semi-continuous webbing 13 forming the longitudinal side members of the ladder may be replaced by a series of hinged aluminium strips pivotally attached to each rung and adapted to fold inwardly between the rungs when the ladder is collapsed .
  • the entire structure may be retained in a folded condition by a webbing strap or straps which pass around at least a part of the folde structure and are removably held together and or attached to the ladder by a quick release catch .
  • the anchor members or arms 1 8 may be

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

L'invention se rapporte à une échelle de secours pliable, qui comprend une série d'échelons rigides (12) disposés à intervalles réguliers le long d'une paire de bandes de toile verticales externes (13) et reliés aux bandes par une série de tiges espacées (16) placées dans les boucles (15) de la toile au niveau des régions terminales des échelons (12). La toile (13) passe à travers des fentes (14) situées dans les régions terminales des échelons. L'ensemble est retenu en position pliée par des bras pivotants (18) comportant des prolongements (19) et pouvant pivoter vers l'extérieur pour se placer contre les bords d'une ouverture de fenêtre d'étage supérieur pour permettre de suspendre l'échelle. Une plaque couvrante supérieure (10) est en outre retenue par un élément en forme de crochet réglable (21) qui vient se placer sur le rebord interne de la tablette intérieure de la fenêtre.
PCT/GB1990/001657 1989-04-19 1990-10-30 Echelle de secours pliable WO1992008032A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898908792A GB8908792D0 (en) 1989-04-19 1989-04-19 A collapsible escape ladder

Publications (1)

Publication Number Publication Date
WO1992008032A1 true WO1992008032A1 (fr) 1992-05-14

Family

ID=10655264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001657 WO1992008032A1 (fr) 1989-04-19 1990-10-30 Echelle de secours pliable

Country Status (2)

Country Link
GB (2) GB8908792D0 (fr)
WO (1) WO1992008032A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8908792D0 (en) * 1989-04-19 1989-06-07 Nall John A collapsible escape ladder
GB9125120D0 (en) * 1991-11-26 1992-01-22 Bowman George H P A kit for assembly into a ladder
US5628380A (en) * 1995-05-26 1997-05-13 Matisi; Steve Portable fire escape
GB2319285A (en) * 1996-11-14 1998-05-20 John Edward Pritchard Fire escape ladder
US5971105A (en) * 1998-03-26 1999-10-26 Jacobson; Harold Escape ladder
CN2368969Y (zh) * 1998-05-11 2000-03-15 X－It产品责任有限公司 折叠逃生梯
US6279681B1 (en) 1998-05-11 2001-08-28 X-It Products, Llc Collapsible ladder having highly nesting rungs with integral stand-off projections
US6530455B1 (en) 2000-08-11 2003-03-11 Walter Kidde Portable Equipment, Inc. Escape ladder
GB0114781D0 (en) * 2001-06-16 2001-08-08 Melville Aubrey E Ladder
US8191681B2 (en) * 2008-08-19 2012-06-05 Confer Plastics, Inc. A-frame ladder with a tambour gate/barrier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB719057A (en) * 1950-11-09 1954-11-24 John Patrick Booker Improvements in or relating to portable fire escape ladders
GB2015632A (en) * 1978-03-01 1979-09-12 Kiss A S Collapsible ladder
US4243121A (en) * 1979-09-11 1981-01-06 Kiss Alexander S Web ladder release mechanism
GB2201187A (en) * 1987-02-13 1988-08-24 Malachy John Molloy Fire escape ladder
GB2230813A (en) * 1989-04-19 1990-10-31 John Nall A collapsible escape ladder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB324671A (en) * 1928-10-31 1930-01-31 William Victor Hutchinson Improvements in and relating to fire escape or general emergency ladders

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB719057A (en) * 1950-11-09 1954-11-24 John Patrick Booker Improvements in or relating to portable fire escape ladders
GB2015632A (en) * 1978-03-01 1979-09-12 Kiss A S Collapsible ladder
US4243121A (en) * 1979-09-11 1981-01-06 Kiss Alexander S Web ladder release mechanism
GB2201187A (en) * 1987-02-13 1988-08-24 Malachy John Molloy Fire escape ladder
GB2230813A (en) * 1989-04-19 1990-10-31 John Nall A collapsible escape ladder

Also Published As

Publication number Publication date
GB9008478D0 (en) 1990-06-13
GB8908792D0 (en) 1989-06-07
GB2230813A (en) 1990-10-31

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