WO2004005659A1 - Accessoire d'echelle - Google Patents

Accessoire d'echelle Download PDF

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Publication number
WO2004005659A1
WO2004005659A1 PCT/AU2003/000889 AU0300889W WO2004005659A1 WO 2004005659 A1 WO2004005659 A1 WO 2004005659A1 AU 0300889 W AU0300889 W AU 0300889W WO 2004005659 A1 WO2004005659 A1 WO 2004005659A1
Authority
WO
WIPO (PCT)
Prior art keywords
rope
ladder
cord
support
guide
Prior art date
Application number
PCT/AU2003/000889
Other languages
English (en)
Inventor
John Grima
Original Assignee
John Grima
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 Grima filed Critical John Grima
Priority to AU2003236600A priority Critical patent/AU2003236600B2/en
Publication of WO2004005659A1 publication Critical patent/WO2004005659A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like

Definitions

  • This invention relates to a ladder support
  • ladder shall be taken to include any form of ladder or similar means which is utilised to gain access to an elevated position.
  • structure will be taken to include tree, post pole, scaffolding or like structure wherein, when a ladder is in position against the structure, the structure can be encircled.
  • rope and “cord” shall be taken to include any form of flexible elongate element including a rope, cable, cord, chain or the like.
  • a ladder support comprising a rope guide adapted to be supported from the upper end of a ladder, the rope guide having two opposed ends which are intended to be located transversely across the ladder, a rope received in the guide and extending form each end, the rope having a length sufficient to enable both ends of the rope to be accessible from the ground when the ladder is in position against a structure, one end of the rope adapted to be able to receive and slidably engage the rope inwardly of the other end to define a loop which can be varied in its dimensions.
  • a cord is fixed to the one end of the rope, the cord having a length such that the cord is accessible from the ground when the one end of the rope is located adjacent the upper end of the ladder
  • the one end of the rope is provided with a wedging means which is adapted to be able to be wedgingly received in the guide when the rope is tightened around the structure.
  • the wedging means comprises a resilient tubular member received over the rope at the one end.
  • the resilient tubular member is divergent in diameter towards the one end.
  • the rope guide includes a sheave block supported at each end of the guide and said rope passes through the sheave blocks.
  • the elongate member comprises a channel section and the portion of the rope received between the ends is received in the channel section.
  • the rope guide is formed with an engaging element which is adapted to engage with the structure to limit transverse and/or vertical movement of the upper end of the ladder relative to the structure.
  • the engaging element comprises a set of spike elements.
  • the spike elements extend laterally from one flange of the channel section. According to one embodiment the spike elements are integral with the one flange.
  • the invention resides in a ladder having a ladder support of the form as described above applied thereto.
  • the ladder support is incorporated as a part of the ladder.
  • the method further comprises fixing a cord to the one end of the rope whereby the cord is accessible from the ground when the one end is adjacent the upper end of the ladder, said cord enabling the one end to be moved along the rope on a downward force being applied to the cord.
  • Figure 1 is an isometric view a ladder support according to the first embodiment
  • Figure 2 is a schematic view of one end of the rope guide of the ladder support according to the first embodiment illustrating the one end of the rope and its affixation to the remainder of the rope and cord;
  • Figure 3 is a schematic side elevation of a ladder in position against a structure with a ladder support according to first the embodiment in use;
  • Figure 4 is an isometric view a ladder support according to the second embodiment.
  • the first embodiment as shown at Figures 1 to 3 comprises a ladder support 11 which is intended to be used with a ladder 13 in order to locate and positively retain the ladder in position against a tree 15 as illustrated in Figure 3.
  • the ladder support 11 comprises a rope guide 17 which comprises an elongate channel element 19 which pivotally supports a pair of sheave blocks 21 at each end.
  • the channel member 19 is provided with a set of retention loops 23 at spaced intervals along the inner face of the web of the channel member 19.
  • the ends of the channel support a roller 24 which is supported from the flanges of the channel and is spaced outwardly from the web of the channel to be rotatably accommodated within the channel.
  • the rope guide comprises a pair of clamping brackets 25 which enable the channel element 19 to be fixed to the upper end of the ladder 13.
  • the clamping brackets 25 are located at the outer face of the web of the channel element.
  • one of the flanges of the channel element 19 is provided with a gripping member 27 which is formed with a number of spike elements whereby when the rope guide 17 is located in position on the upper end of the ladder the gripping member 27 is brought into engagement with the tree in order that the spikes can penetrate or engage with the trunk of the tree to limit transverse and/or vertical movement of the rope guide with respect to the tree.
  • the ladder support further comprises a rope 27 which is received through the sheave blocks 21 , each of the retention loops 23 and between the roller 24 and the web of the channel.
  • One end 29 of the rope 27 is provided with a clip member 31 which can be engaged with portion of the rope extending from the remote sheave block in order that the one end 29 is slidably received over that portion of the rope 27 to define a loop which can be varied in its dimension.
  • the rope 27 has a length whereby when the ladder support is in position on the ladder and the ladder is in position against the tree as illustrated at Figure 3 both ends of the rope are accessible from the ground.
  • the ladder support comprises a cord 33 which is fixed at one end 35 to the one end 29 of the rope 27.
  • the cord 33 has a length such that when the one end 25 is located adjacent the upper end of the ladder when in position -, against a structure the other end of the cord 33 is accessible from the ground.
  • the one end 29 of the rope is associated with a wedging element 37 which is resilient and of a generally tubular configuration such that it extends along the rope 27 for a short distance away from the one end 29.
  • the wedging element 27 has a divergent cross section in the direction of the one end 29 and is formed of a spirally wound length of resilient wire.
  • the rope guide 17 is fixed to the upper end of the ladder 13 by the clamping brackets 25.
  • the rope 27 is then received through the sheave blocks 21 and each of the retention loops 23.
  • the ladder is then raised such that its upper end is at the desired position on the tree 15 and in so doing both ends of the rope 27 are positioned to be accessible from the ground.
  • the one end 29 of the rope is then engaged over the other portion of the rope 27 by utilisation of a clip 31 to define a loop which encircles the structure.
  • the loop is then tightened around the structure and in so doing the wedging member 37 is brought into wedging engagement with the adjacent sheave block.
  • the lower end of the rope is then passed around the base of the trunk of the tree and then to the lower end of the ladder 13 where it is tied to the lower end of the ladder.
  • the ladder is positively engaged in position in that the upper end of the ladder is fixed as a result of the presence of the loop around the structure at its upper end.
  • the lower end of the ladder is braced by the rope extending from the base of the trunk of the tree to the base of the ladder.
  • the rope 27 When it becomes necessary to disengage the ladder from the tree the rope 27 is untied from the base of the ladder 13 and is unwound from the base of the trunk of the tree 15. The cord 33 is then pulled which causes the wedging member 37 to disengage from the adjacent sheave block 21 to cause the one end 29 of the rope to move along the remaining portion of the rope until it can be accessed from the ground. Once the one end 29 of the rope can be accessed it is then disengaged from the remainder of the rope 27 and the ladder is disengaged from the structure.
  • the second embodiment as shown at Figure 4 is similar to the first embodiment and therefore the same reference numerals have been used for corresponding components.
  • the ladder support 11 according to the second embodiment comprises a rope guide 17 which comprises an elongate channel element 19 which pivotally supports a pair of sheave blocks 21 at each end.
  • the channel member 19 is provided with a set of retention loops 23 at spaced intervals along the inner face of the web of the channel member 19.
  • the rope guide comprises a pair of clamping brackets 25 which enable the channel element 19 to be fixed to the upper end of the ladder 13.
  • the clamping brackets 25 are located at the outer face of the web of the channel element.
  • one of the flanges of the channel element 19 is formed at its outer edge to provide a gripping member 27 which comprises a set of spaced spiked elements whereby when the rope guide 17 is located in position on the upper end of the ladder the gripping member 27 is brought into engagement with the tree in order that the spikes can penetrate or engage with the trunk of the tree to restrain the upper end of the ladder from transverse and/or vertical movement with respect to the tree.
  • the ladder support of the second embodiment further comprises a rope 27 which is received through the sheave blocks 21 and each of the retention loops 23.
  • One end 29 of the rope 27 is provided with a clip member 31 which can be engaged with portion of the rope extending from the remote sheave block in order that the one end 29 is slidably received over that portion of the rope 27 to define a loop which can be varied in its dimension.
  • the rope 27 has a length whereby when the ladder support is in position on the ladder and the ladder is in position against the tree both ends of the rope are accessible from the ground.
  • the ladder support comprises a cord 33 which is fixed at one end 35 to the one end 29 of the rope 27.
  • the cord 33 has a length such that when the one end 25 is located adjacent the upper end of the ladder when in position against a structure the other end of the cord 33 is accessible from the ground.
  • the one end 29 of the rope is associated with a wedging element 37 which is resilient and of a generally tubular configuration such that it extends along the rope 27 for a short distance away from the one end 29.
  • the wedging element 27 has a divergent cross section in the direction of the one end 29 and is formed of a spirally wound length of resilient wire.
  • the ladder support according to the second embodiment is almost the same as is the case for the first embodiment.
  • the rope guide 17 is fixed to the upper end of the ladder 13 by the clamping brackets 25.
  • the rope 27 is then received through the sheave blocks 21 and each of the retention loops 23.
  • the ladder is then raised such that its upper end is at the desired position on the tree 15, and in so doing both ends of the rope 27 are positioned to be accessible from the ground.
  • the one end 29 of the rope is then engaged over the other portion of the rope 27 by utilisation of a clip 31 to define a loop which encircles the structure.
  • the loop is then tightened around the structure and in so doing the wedging member 37 is brought into wedging engagement with the adjacent sheave block.
  • the lower end of the rope is then passed around the base of the trunk of the tree and then to the lower end of the ladder 13 where it is tied to the lower end of the ladder.
  • the ladder is positively engaged in position in that the upper end of the ladder is fixed as a result of the presence of the loop around the structure at its upper end.
  • the lower end of the ladder is braced by the rope extending from the base of the trunk of the tree to the base of the ladder.
  • the rope 27 When it becomes necessary to disengage the ladder from the tree the rope 27 is untied from the base of the ladder 13 and is unwound from the base of the trunk of the tree 15. The rope 27 is then agitated which causes the wedging member 37 to disengage from the adjacent sheave block 21 to cause the one end 29 of the rope to move along the remaining portion of the rope until it can be accessed from the ground. Once the one end 29 of the rope can be accessed it is then disengaged from the remainder of the rope 27 and the ladder is disengaged from the structure.
  • the wedging member is formed of a suitable resiliently flexible plastics or elastomeric type material.
  • the ladder support is incorporated into the structure of the ladder.

Landscapes

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

Abstract

L'invention concerne un support d'échelle (11) comprenant un guide-câble (17) conçu pour être soutenu à partir de l'extrémité supérieure d'une échelle (13), et un câble (27) logé dans le guide (17). Le câble (27) a une longueur suffisante pour permettre aux deux extrémités du câble (27) d'être accessibles à partir du sol, lorsque l'échelle (13) se trouve contre une structure. Une extrémité (29) du câble (27) est conçue pour pouvoir loger et rentrer en contact de manière coulissante avec le câble à l'intérieur de l'autre extrémité, afin de former une boucle qui peut varier de dimensions.
PCT/AU2003/000889 2002-07-09 2003-07-09 Accessoire d'echelle WO2004005659A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003236600A AU2003236600B2 (en) 2002-07-09 2003-07-09 Ladder accessory

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2002950170 2002-07-09
AU2002950170A AU2002950170A0 (en) 2002-07-09 2002-07-09 Ladder accessory

Publications (1)

Publication Number Publication Date
WO2004005659A1 true WO2004005659A1 (fr) 2004-01-15

Family

ID=27809272

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000889 WO2004005659A1 (fr) 2002-07-09 2003-07-09 Accessoire d'echelle

Country Status (2)

Country Link
AU (1) AU2002950170A0 (fr)
WO (1) WO2004005659A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194224A1 (fr) * 2008-12-02 2010-06-09 Fernando Ballet Martinez Dispositif de protection pour échelles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232206A2 (fr) * 1986-02-05 1987-08-12 Anaplastiki Ltd. Dispositif de sécurité pour l'appui d'échelles et d'échaffaudage sur des poteaux, arbres, colonnes, ou façades d'édifices
DE29618555U1 (de) * 1996-10-24 1996-12-19 Langer, Horst, Prof. Dr.-Ing., 33178 Borchen Kipp- und Rutschsicherung für Anlegeleitern
JPH09256764A (ja) * 1996-03-26 1997-09-30 Takuji Kusano 梯子固定手段

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232206A2 (fr) * 1986-02-05 1987-08-12 Anaplastiki Ltd. Dispositif de sécurité pour l'appui d'échelles et d'échaffaudage sur des poteaux, arbres, colonnes, ou façades d'édifices
JPH09256764A (ja) * 1996-03-26 1997-09-30 Takuji Kusano 梯子固定手段
DE29618555U1 (de) * 1996-10-24 1996-12-19 Langer, Horst, Prof. Dr.-Ing., 33178 Borchen Kipp- und Rutschsicherung für Anlegeleitern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194224A1 (fr) * 2008-12-02 2010-06-09 Fernando Ballet Martinez Dispositif de protection pour échelles

Also Published As

Publication number Publication date
AU2002950170A0 (en) 2002-09-12

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