WO2007015110A1 - Ladder assembly - Google Patents

Ladder assembly Download PDF

Info

Publication number
WO2007015110A1
WO2007015110A1 PCT/GB2006/050226 GB2006050226W WO2007015110A1 WO 2007015110 A1 WO2007015110 A1 WO 2007015110A1 GB 2006050226 W GB2006050226 W GB 2006050226W WO 2007015110 A1 WO2007015110 A1 WO 2007015110A1
Authority
WO
WIPO (PCT)
Prior art keywords
ladder
assembly
ladder assembly
reels
reel
Prior art date
Application number
PCT/GB2006/050226
Other languages
French (fr)
Inventor
Jeffrey Vint
Original Assignee
Jeffrey Vint
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 Jeffrey Vint filed Critical Jeffrey Vint
Publication of WO2007015110A1 publication Critical patent/WO2007015110A1/en

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
    • E06C7/484—Supports specially adapted for use with a wall opening, e.g. windows
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/188—Accessories for temporary stabilising a ladder, e.g. temporary attaching devices
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts
    • 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

Definitions

  • This invention relates to a ladder assembly and more particularly to a ladder assembly including a stabilising device.
  • GB 2 366 829 discloses one such device comprising a telescopic strut, which can be fastened between the foot of a ladder and a wall.
  • GB 2 372 532 discloses another such device which comprises a pair of legs for attaching to a ladder.
  • a disadvantage of known devices for stabilising ladders is that they are expensive in construction and often do not stabilise the ladder satisfactorily.
  • Another disadvantage of known devices is that they are often bulky and complicated to use and as such are often used incorrectly or are not used at all.
  • a ladder assembly comprising a ladder having a pair of elongate uprights interconnected along their length by a plurality of stiles, the assembly further comprising a stabilising device having a reel connected to the ladder, an extendable elongate line wound on the reel and means for locking the extension of the line.
  • the ladder In use, the ladder is positioned against an object and the line is extended from the reel and connected to a point on the object. The extension of the line is then locked to prevent movement of ladder away from the object, thereby stabilising the ladder.
  • the device is simple and inexpensive in construction yet can reliably stabilise the ladder.
  • the device is connected to the ladder adjacent one end thereof.
  • the end of the ladder having the device is positioned uppermost against the object.
  • the locking means is arranged to lock the line against extension from the reel.
  • the reel comprises means for retracting the line.
  • the reel comprises a spool and a spring which applies a rotational bias to the spool to retract the line.
  • the locking means is arranged to lock the spool against rotational movement.
  • the line may comprise a rope, a wire or a strap.
  • a fastening is provided at the free end of the line for attaching to the structure.
  • the fastening may comprise a clamp or a suction device.
  • the assembly comprises a pair of lines.
  • the lines are extended in opposite lateral directions from the ladder and secured to respective points on the objects. This arrangement helps to alleviate the risk of the ladder falling sideways.
  • the lines extend form respective reels connected to the ladder.
  • reels are connected to opposite ends of an elongate rod which extends through a tubular stile of the ladder.
  • the or each stabilising device comprises a fastening which secures it to the ladder.
  • the fastening preferably comprises a c-shaped element having a mouth for receiving an upright of the ladder, means being provided for closing the mouth.
  • Figure 1 is an exploded perspective view of a stabilising device of a first embodiment of ladder assembly in accordance with this invention
  • Figure 2 is a front view of the ladder assembly of Figure 1 when in use;
  • Figure 3 is a perspective view of a portion of a stabilising device of a second embodiment of ladder assembly in accordance with this invention.
  • Figure 4 is a front view of the ladder assembly of Figure 3 when in use.
  • a stabilising device for fitting to a ladder comprises an elongate rod 10 for passing through a hollow tubular rung of the ladder. Grooves 16 extend circumferentially around the opposite ends of the rod 10.
  • a pair of cylindrical reels 1 1 are provided for connecting to respective opposite ends of the rod 10.
  • Each reel 11 comprises a channel 12 extending across its rear face from a side edge thereof.
  • a pair of opposed flanges extend along respective opposite longitudinal sides of the mouth of the channel 12.
  • Each reel 11 is connected to the rod 10 by sliding its channel 12 onto a respective end of the rod 10, such that the flanges thereon engage into the groove 16.
  • the reels 1 1 lock in place once they have been fully slid onto the ends of the rod 10.
  • An elongate strap 13 extends radially from each reel 1 1.
  • Each strap 13 is wound around a spool (not shown) mounted inside its reel 11 .
  • a spring (not shown) applies a rotational bias to the spool, which retracts the strap 13 into the reel 1 1.
  • An actuator 15 is provided for locking the spool against rotational movement.
  • the free end of the strap 13 is connected to a clamp 14 comprising a pair of jaws which are spring biased together.
  • a rod 10 is passed through the uppermost rung 22 of a ladder 20 and reels 11 are connected to the opposite ends of the rod 10 as hereinbefore described.
  • Another pair of reels 1 1 may be mounted adjacent the bottom of the ladder.
  • the straps 13 are extended in opposite lateral directions from the ladder 20 and the clamps 14 are secured to respective points on the structure against which the ladder is leaning.
  • the actuators 15 on the reels are then actuated to lock the straps 13 against further extension.
  • the upper pair of straps 13 securely hold the ladder in place and prevent it from falling sideways or away from the structure against which the ladder is leaning.
  • the optional lower pair of straps prevent the foot of the ladder from slipping away from the structure against which the ladder is leaning.
  • the reel 11 is engaged with a cylindrical formation 42 which projects from a c-shaped bracket 40.
  • the outer end of the formation 42 is provided with a circumferential groove in a similar manner to the groove 16 on the rod 10 in Figure 1 , such that the reel 11 can be engaged with the formation by sliding its channel 12 onto the formation 42 as hereinbefore described.
  • the c-shaped bracket 40 comprises a flat and straight central portion provided with outwardly projecting arms at its opposite ends.
  • a hook- shaped portion 41 extends upwardly from the central portion of the bracket 40.
  • the bracket 40 in use the bracket 40 is engaged with an upright 21 of a ladder 20 by positioning the upright 21 between the two arms of the bracket. Also, the hook-shaped portion 41 of the bracket 40 is engaged over the uppermost rung 22. A rod or bar 43 is then inserted through a pair of aligned apertures on the ends of the arms to captively retain the upright 21 . A locking element is then attached to the rod or bar 43 to securely lock it in place to the bracket 40.
  • a similar bracket 40 is attached to the opposite upright 21 , with the hook-shaped portion 41 thereof being engaged with the same rung as the other bracket 40.
  • a pair of brackets may also be connected to the ladder adjacent the lower end thereof.
  • Reels 11 are connected to each bracket 40 and the straps 13 thereof are secured to respective points on the structure against which the ladder is leaning. The actuators 15 on the reels are then actuated to lock the straps 13 against further extension.
  • a stabilising device in accordance with this invention is simple and inexpensive in construction yet can reliably stabilise a ladder.

Landscapes

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

Abstract

A ladder stabilising device comprises a pair of reels (11) for mounting to respective sides of the ladder (20) adjacent its upper end. An elongate line member (13) extends from each reel (11) , the free end of each line being connected to a fastening member (14). In use, the ladder (20) is positioned against an object and the lines members (13) are extended from the reel and connected to respective points on the object. The reels are then locked to prevent extension of the line members (13), thereby movement of ladder (20) away from the object and stabilising the ladder.

Description

LADDER ASSEMBLY
This invention relates to a ladder assembly and more particularly to a ladder assembly including a stabilising device.
Devices for stabilising ladders are well known. GB 2 366 829 discloses one such device comprising a telescopic strut, which can be fastened between the foot of a ladder and a wall. GB 2 372 532 discloses another such device which comprises a pair of legs for attaching to a ladder.
A disadvantage of known devices for stabilising ladders is that they are expensive in construction and often do not stabilise the ladder satisfactorily. Another disadvantage of known devices is that they are often bulky and complicated to use and as such are often used incorrectly or are not used at all.
I have now devised a ladder assembly which alleviates the above-mentioned problems.
In accordance with this invention there is provided a ladder assembly comprising a ladder having a pair of elongate uprights interconnected along their length by a plurality of stiles, the assembly further comprising a stabilising device having a reel connected to the ladder, an extendable elongate line wound on the reel and means for locking the extension of the line.
In use, the ladder is positioned against an object and the line is extended from the reel and connected to a point on the object. The extension of the line is then locked to prevent movement of ladder away from the object, thereby stabilising the ladder.
The device is simple and inexpensive in construction yet can reliably stabilise the ladder.
Preferably the device is connected to the ladder adjacent one end thereof. In use, the end of the ladder having the device is positioned uppermost against the object.
Preferably the locking means is arranged to lock the line against extension from the reel. Preferably the reel comprises means for retracting the line. Preferably the reel comprises a spool and a spring which applies a rotational bias to the spool to retract the line.
Preferably the locking means is arranged to lock the spool against rotational movement.
The line may comprise a rope, a wire or a strap. Preferably a fastening is provided at the free end of the line for attaching to the structure. The fastening may comprise a clamp or a suction device.
Preferably the assembly comprises a pair of lines. In use, the lines are extended in opposite lateral directions from the ladder and secured to respective points on the objects. This arrangement helps to alleviate the risk of the ladder falling sideways.
Preferably the lines extend form respective reels connected to the ladder.
Preferably the reels are connected to opposite ends of an elongate rod which extends through a tubular stile of the ladder.
In an alternative embodiment, the or each stabilising device comprises a fastening which secures it to the ladder. The fastening preferably comprises a c-shaped element having a mouth for receiving an upright of the ladder, means being provided for closing the mouth.
Embodiments of this invention will now be described by way of examples only and with reference to the accompanying drawings, in which:
Figure 1 is an exploded perspective view of a stabilising device of a first embodiment of ladder assembly in accordance with this invention;
Figure 2 is a front view of the ladder assembly of Figure 1 when in use;
Figure 3 is a perspective view of a portion of a stabilising device of a second embodiment of ladder assembly in accordance with this invention; and Figure 4 is a front view of the ladder assembly of Figure 3 when in use.
Referring to Figure 1 of the drawings, a stabilising device for fitting to a ladder comprises an elongate rod 10 for passing through a hollow tubular rung of the ladder. Grooves 16 extend circumferentially around the opposite ends of the rod 10. A pair of cylindrical reels 1 1 are provided for connecting to respective opposite ends of the rod 10. Each reel 11 comprises a channel 12 extending across its rear face from a side edge thereof. A pair of opposed flanges extend along respective opposite longitudinal sides of the mouth of the channel 12. Each reel 11 is connected to the rod 10 by sliding its channel 12 onto a respective end of the rod 10, such that the flanges thereon engage into the groove 16. The reels 1 1 lock in place once they have been fully slid onto the ends of the rod 10.
An elongate strap 13 extends radially from each reel 1 1. Each strap 13 is wound around a spool (not shown) mounted inside its reel 11 . A spring (not shown) applies a rotational bias to the spool, which retracts the strap 13 into the reel 1 1. An actuator 15 is provided for locking the spool against rotational movement. The free end of the strap 13 is connected to a clamp 14 comprising a pair of jaws which are spring biased together.
Referring to Figure 2 of the drawings, in use a rod 10 is passed through the uppermost rung 22 of a ladder 20 and reels 11 are connected to the opposite ends of the rod 10 as hereinbefore described. Another pair of reels 1 1 may be mounted adjacent the bottom of the ladder. The straps 13 are extended in opposite lateral directions from the ladder 20 and the clamps 14 are secured to respective points on the structure against which the ladder is leaning. The actuators 15 on the reels are then actuated to lock the straps 13 against further extension.
The upper pair of straps 13 securely hold the ladder in place and prevent it from falling sideways or away from the structure against which the ladder is leaning. The optional lower pair of straps prevent the foot of the ladder from slipping away from the structure against which the ladder is leaning.
Referring to Figure 3 of the drawings, in an alternative embodiment, the reel 11 is engaged with a cylindrical formation 42 which projects from a c-shaped bracket 40. The outer end of the formation 42 is provided with a circumferential groove in a similar manner to the groove 16 on the rod 10 in Figure 1 , such that the reel 11 can be engaged with the formation by sliding its channel 12 onto the formation 42 as hereinbefore described. The c-shaped bracket 40 comprises a flat and straight central portion provided with outwardly projecting arms at its opposite ends. A hook- shaped portion 41 extends upwardly from the central portion of the bracket 40.
Referring to Figure 4 of the drawings, in use the bracket 40 is engaged with an upright 21 of a ladder 20 by positioning the upright 21 between the two arms of the bracket. Also, the hook-shaped portion 41 of the bracket 40 is engaged over the uppermost rung 22. A rod or bar 43 is then inserted through a pair of aligned apertures on the ends of the arms to captively retain the upright 21 . A locking element is then attached to the rod or bar 43 to securely lock it in place to the bracket 40.
A similar bracket 40 is attached to the opposite upright 21 , with the hook-shaped portion 41 thereof being engaged with the same rung as the other bracket 40. A pair of brackets may also be connected to the ladder adjacent the lower end thereof. Reels 11 are connected to each bracket 40 and the straps 13 thereof are secured to respective points on the structure against which the ladder is leaning. The actuators 15 on the reels are then actuated to lock the straps 13 against further extension.
A stabilising device in accordance with this invention is simple and inexpensive in construction yet can reliably stabilise a ladder.

Claims

1. A ladder assembly comprising a ladder having a pair of elongate uprights interconnected along their length by a plurality of stiles, the assembly further comprising a stabilising device having a reel connected to the ladder, an extendable elongate line member wound on the reel and means for locking the extension of said line member.
2. A ladder assembly as claimed in claim 1 , in which the device is connected to the ladder adjacent one end thereof.
3. A ladder assembly as claimed in claims 1 or 2, in which said reel comprises means for retracting said line member.
4. A ladder assembly as claimed in claim 3, in which said reel comprises a spool and a spring which applies a rotational bias to the spool to retract the line member.
5. A ladder assembly as claimed in claim 4, in which the locking means is arranged to lock the spool against rotational movement.
6. A ladder assembly as claimed in any preceding claim, in which line member comprises a rope, a wire or a strap.
7. A ladder assembly as claimed in any preceding claim, in which a fastening is provided at the free end of the line member for attaching to a structure.
8. A ladder assembly as claimed in claim 7, in which the fastening comprises a suction device.
9. A ladder assembly as claimed in claim 7, in which the fastening comprises a clamp.
10. A ladder assembly as claimed in any preceding claim, in which the assembly comprises a pair of line members.
11 . A ladder assembly as claimed in claim 10, in which the line members extend from respective reels connected to the ladder.
12. A ladder assembly as claimed in claim 1 1 , in which the reels are disposed adjacent respective uprights.
13. A ladder assembly as claimed in claim 12, in which the reels are connected to opposite ends of an elongate rod which extends through a tubular stile of the ladder.
14. A ladder assembly as claimed in claim 1 , in which the stabilising device comprises a fastening which secures the stabilising device to the ladder.
15. A ladder assembly as claimed in claim 12, in which the reels each comprise a fastening which secures the reels to respective uprights of the ladder.
16. A ladder assembly as claimed in claims 14 or 15, in which the fastening comprises a c-shaped element having a mouth for receiving an upright of the ladder, means being provided for closing the mouth.
PCT/GB2006/050226 2005-08-04 2006-07-28 Ladder assembly WO2007015110A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0516032.0 2005-08-04
GB0516032A GB2428730A (en) 2005-08-04 2005-08-04 Stabiliser for ladder

Publications (1)

Publication Number Publication Date
WO2007015110A1 true WO2007015110A1 (en) 2007-02-08

Family

ID=34984072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/050226 WO2007015110A1 (en) 2005-08-04 2006-07-28 Ladder assembly

Country Status (2)

Country Link
GB (1) GB2428730A (en)
WO (1) WO2007015110A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606063A (en) * 2012-04-01 2012-07-25 常熟南师大发展研究院有限公司 Sucker for ladder
US20150259982A1 (en) * 2014-03-17 2015-09-17 John J. Maragliano Apparatus for detachably securing a ladder to a shoring structure and method of use thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2432621A (en) * 2005-11-24 2007-05-30 Douglas Burton A ladder stabilising device fixing the base of the ladder to an anchor point.
NO343785B1 (en) * 2016-11-23 2019-06-03 Bjoernevaag Fritz Ladder comprising a ladder fall protection device, the device comprising two automatic rolled rope drums with two rope poles in each rope drum, and a method of fall ladder protection by using such a device.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2063342A (en) * 1979-10-23 1981-06-03 Leicester City Council Eye-bolts
GB2069579A (en) * 1980-02-07 1981-08-26 Stephens & Carter Ltd Anti-slip and securing accessory for ladders
US4408680A (en) * 1981-03-06 1983-10-11 Ross Don O Ladder support assembly
JP2001254582A (en) * 2000-03-13 2001-09-21 Sankoo Kenchikuten:Kk Ladder slide stop
FR2812336A1 (en) * 2000-07-27 2002-02-01 Frederic Tarabusi Ladder with reinforced safety comprises uprights connected by rungs, housing near top of one upright houses flexible link, one end of which outside housing has snap hook, link looped outside housing to surround anchoring element
WO2002059444A1 (en) * 2001-01-24 2002-08-01 Robert Francis Charlton Ladder safety device
US6427803B1 (en) * 2001-01-05 2002-08-06 Scott A. Moore Apparatus for securing ladder to building structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142750A1 (en) * 1990-12-24 1992-07-02 Franz Mayr Ladder slip-prevention equipment - has rope between stirrups clamped to gutter edge and threaded through hollow rung
GB2310682A (en) * 1996-02-27 1997-09-03 Joe Martin A ladder stabiliser

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2063342A (en) * 1979-10-23 1981-06-03 Leicester City Council Eye-bolts
GB2069579A (en) * 1980-02-07 1981-08-26 Stephens & Carter Ltd Anti-slip and securing accessory for ladders
US4408680A (en) * 1981-03-06 1983-10-11 Ross Don O Ladder support assembly
JP2001254582A (en) * 2000-03-13 2001-09-21 Sankoo Kenchikuten:Kk Ladder slide stop
FR2812336A1 (en) * 2000-07-27 2002-02-01 Frederic Tarabusi Ladder with reinforced safety comprises uprights connected by rungs, housing near top of one upright houses flexible link, one end of which outside housing has snap hook, link looped outside housing to surround anchoring element
US6427803B1 (en) * 2001-01-05 2002-08-06 Scott A. Moore Apparatus for securing ladder to building structure
WO2002059444A1 (en) * 2001-01-24 2002-08-01 Robert Francis Charlton Ladder safety device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606063A (en) * 2012-04-01 2012-07-25 常熟南师大发展研究院有限公司 Sucker for ladder
US20150259982A1 (en) * 2014-03-17 2015-09-17 John J. Maragliano Apparatus for detachably securing a ladder to a shoring structure and method of use thereof
US9951558B2 (en) * 2014-03-17 2018-04-24 John J. Maragliano Apparatus for detachably securing a ladder to a shoring structure and method of use thereof

Also Published As

Publication number Publication date
GB2428730A (en) 2007-02-07
GB0516032D0 (en) 2005-09-14

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