CA2562409A1 - Loft ladder assembly - Google Patents

Loft ladder assembly Download PDF

Info

Publication number
CA2562409A1
CA2562409A1 CA002562409A CA2562409A CA2562409A1 CA 2562409 A1 CA2562409 A1 CA 2562409A1 CA 002562409 A CA002562409 A CA 002562409A CA 2562409 A CA2562409 A CA 2562409A CA 2562409 A1 CA2562409 A1 CA 2562409A1
Authority
CA
Canada
Prior art keywords
ladder
loft
carriage
frame
assembly according
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002562409A
Other languages
French (fr)
Other versions
CA2562409C (en
Inventor
Per-Olof Eriksson
Christer Johansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telesteps AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2562409A1 publication Critical patent/CA2562409A1/en
Application granted granted Critical
Publication of CA2562409C publication Critical patent/CA2562409C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
    • E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic
    • E04F11/062—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Joints Allowing Movement (AREA)
  • Residential Or Office Buildings (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

A loft ladder assembly 10 is described which comprises a telescopically collapsible ladder 12 in combination with a frame 14 for mounting the ladder 12 within a hatch opening. The frame 14 comprises a mounting bracket 14a to be secured in use to the hatch opening, to which bracket 14a the uppermost section of the ladder 12 is pivotably connected, and a carriage 14b pivotabl y connected to the mounting bracket 14a for supporting the weight of the ladde r 12 in its stowage position and preventing the ladder 12 from extending unintentionally.

Claims (14)

1. A loft ladder assembly for accessing a loft through a hatch opening, where the loft ladder assembly comprises a telescopically collapsible ladder having a locking arrangement being releasable on one rung to collapse the ladder and a frame for mounting the ladder within a hatch opening, the frame comprising a mounting bracket to be secured in use to the hatch opening, connecting arrangements to pivotably connect the ladder to the frame and holding arrangements to hold the ladder in relation to the frame when the ladder is in a collapsed position, and where the ladder is provided with corresponding holding arrangements, which interacts with the holding arrangements on the frame.
2. A loft ladder assembly according to claim 1, wherein the uppermost section of the ladder is pivotably connected to the bracket, and where a carriage is pivotably connected to the mounting bracket for supporting the weight of the ladder in its stowage position and preventing the ladder from extending unintentionally.
3. A loft ladder assembly according to claim 1, wherein beams are pivotably connected to the frame, and the uppermost section of the ladder is pivotably connected to the beams.
4. A loft ladder assembly according to claim 3, wherein a carriage is pivotably connected to the mounting bracket for supporting the weight of the ladder in its stowage position and preventing the ladder from extending unintentionally.
5. A loft ladder assembly according to any of the preceding claims, wherein, in order to prevent the ladder from extending under the action of its own weight, the carriage is provided with means for releasably engaging the lowermost section of the ladder.
6. A loft ladder assembly according to claim 5, wherein the means for releasably engaging the lowermost section of the ladder comprises a pair of hooks for receiving lugs projecting laterally from the second lowermost rung of the ladder.
7. A loft ladder assembly according to any of claims 3-4, wherein, in order to prevent the ladder from extending under the action of its own weight, the ladder is provided with means for releasably engaging the frame.
8. A loft ladder assembly according to claim 7, wherein the means for releasably engaging the frame comprises a hook section on a second lowermost rung of the ladder for receiving a vertical bar extending between the brackets of the frame.
9. A loft ladder assembly according to any of claims 1-5, wherein, in order to prevent the ladder from extending under the action of its own weight, the ladder is provided with means for releasably engaging the carriage.
10. A loft ladder assembly according to claim 9, wherein the means for releasably engaging the carriage comprises a hook section on a lowermost rung of the ladder for receiving a vertical bar connecting horizontal bars of the carriage.
11. A loft ladder assembly according to any of claims 3-4, wherein the beams can be provided with a holding arrangement, e.g. a spring or hook, in order to prevent the ladder from extending under the action of its own weight when being a stowage position.
12. A loft ladder assembly as claimed in any preceding claim, wherein the carriage is connected to the mounting bracket by means of at least one spring urging the carriage into the stowage position against the action of the weight of the ladder.
13. A loft ladder assembly as claimed in claim 12, wherein each spring is connected to the mounting bracket and to the carriage in such a manner as to act as an over-centre toggle spring, so as to urge the carriage away from the ladder when the latter is deployed.
14. A loft ladder assembly as claimed in any preceding claim, wherein the ladder has locking pins built into the rungs, which pins are spring biases to move laterally outwards into holes formed in the stiles in order to lock the sections of the ladder bars together when the ladder is in its extended position, the locking pins for the next higher section of the ladder being retracted as the rung carrying the locking pins approaches the rung beneath it.
CA2562409A 2004-04-16 2005-04-15 Loft ladder assembly Active CA2562409C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0408475.2 2004-04-16
GB0408475A GB2413148A (en) 2004-04-16 2004-04-16 Loft ladder assembly
PCT/SE2005/000550 WO2005100716A1 (en) 2004-04-16 2005-04-15 Loft ladder assembly

Publications (2)

Publication Number Publication Date
CA2562409A1 true CA2562409A1 (en) 2005-10-27
CA2562409C CA2562409C (en) 2012-08-07

Family

ID=32320920

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2562409A Active CA2562409C (en) 2004-04-16 2005-04-15 Loft ladder assembly

Country Status (12)

Country Link
US (1) US20070234654A1 (en)
EP (1) EP2102429B1 (en)
JP (1) JP2007532809A (en)
CN (1) CN100447371C (en)
AT (1) ATE519000T1 (en)
AU (1) AU2005233496B2 (en)
CA (1) CA2562409C (en)
DK (1) DK2102429T3 (en)
ES (1) ES2370645T3 (en)
GB (1) GB2413148A (en)
NZ (1) NZ550323A (en)
WO (1) WO2005100716A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9863187B2 (en) * 2006-07-27 2018-01-09 Werner Co. Tubular access ladder and method
US7967110B2 (en) * 2006-07-27 2011-06-28 Werner Co. Tubular access ladder and method
EP2097389B1 (en) 2006-12-20 2011-09-14 Boehringer Ingelheim International GmbH Sulfated benzimidazolone derivatives having mixed serotonine receptor affinity
PL218283B1 (en) * 2010-01-18 2014-10-31 Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością Folding stairway, preferably set in a high frame
US8555555B2 (en) * 2010-03-27 2013-10-15 Michael Cardwell Automatic retractable hatch guard
US8695760B2 (en) * 2011-01-28 2014-04-15 Appropriate Combined Technologies, Llc Telescoping pull-down attic ladder
CN102444247A (en) * 2011-09-13 2012-05-09 宁波市鄞州千峰机械科技有限公司 Gentle slope fluctuating stair special for classroom building
CN104746816A (en) * 2013-12-31 2015-07-01 德胜（苏州）洋楼有限公司 Concealed storage staircase for wooden house
US20150183308A1 (en) * 2014-01-02 2015-07-02 Gloria M. Buley Roof hatch system
GB2532423A (en) * 2014-11-18 2016-05-25 Andrew Beard Michael A cantilever mounted access device
GB2557286B (en) * 2016-12-05 2018-12-19 Vincent Cole Geoffrey A Collapsible Ladder Apparatus
US11235852B2 (en) * 2018-09-10 2022-02-01 B/E Aerospace, Inc. Bidirectional hatch for passenger rest compartment
CN109707124A (en) * 2018-11-13 2019-05-03 陈奕霏 A kind of building field balcony guardrail
US20210388669A1 (en) * 2020-06-15 2021-12-16 Brian K. Gates Escape door assembly for storm shelter

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1823510A (en) * 1929-03-27 1931-09-15 Peters Extension ladder hook
GB496612A (en) * 1936-11-14 1938-12-02 Ursula Gleinser Improvements in collapsible loft stairs
US2907401A (en) * 1956-10-23 1959-10-06 Wagner Johann Folding stairs
US3051261A (en) * 1960-07-18 1962-08-28 Wel Bilt Products Company Adjustable stairs
US3169603A (en) * 1963-02-21 1965-02-16 Sr John J Amic Access ladder
US3490557A (en) * 1967-07-07 1970-01-20 Ralph J Auciello Adjustable ladder construction for fire escape platforms and the like
US3653463A (en) * 1970-06-22 1972-04-04 E T Hannan & Associates Inc Collapsible ladder arrangement
FR2300888A1 (en) * 1975-02-14 1976-09-10 Monnerie Gerard NEW STAIRCASE FOLDING DEVICE
US4180142A (en) * 1978-05-25 1979-12-25 Rocco Bruno, Jr Emergency escape openable skylight
JP3117993B2 (en) * 1990-04-10 2000-12-18 エムビーエイ エンタープライジーズ インク Folding ladder
US5495915A (en) * 1990-04-10 1996-03-05 Charles A. McDonnell Collapsible ladder
GB2263932B (en) * 1992-02-01 1995-06-28 Telesteps Limited Loft ladder
AT400737B (en) * 1994-03-04 1996-03-25 Minka Holz Und Metallverarbeit Hatch, in particular for loft staircases
DE19717207C1 (en) * 1997-04-24 1998-12-10 Columbus Treppen Gmbh Extendible ladder for loft trap door
CN2571986Y (en) * 2002-09-25 2003-09-10 王国华 Telescopic ladder

Also Published As

Publication number Publication date
JP2007532809A (en) 2007-11-15
EP2102429A1 (en) 2009-09-23
AU2005233496A1 (en) 2005-10-27
CA2562409C (en) 2012-08-07
NZ550323A (en) 2009-10-30
WO2005100716A1 (en) 2005-10-27
EP2102429B1 (en) 2011-08-03
ES2370645T3 (en) 2011-12-21
ATE519000T1 (en) 2011-08-15
CN1997800A (en) 2007-07-11
GB0408475D0 (en) 2004-05-19
GB2413148A (en) 2005-10-19
CN100447371C (en) 2008-12-31
US20070234654A1 (en) 2007-10-11
AU2005233496B2 (en) 2011-03-24
DK2102429T3 (en) 2011-10-24

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