WO2005054595A8 - Foldable step device such as a staircase or ladder - Google Patents

Foldable step device such as a staircase or ladder

Info

Publication number
WO2005054595A8
WO2005054595A8 PCT/FR2004/002931 FR2004002931W WO2005054595A8 WO 2005054595 A8 WO2005054595 A8 WO 2005054595A8 FR 2004002931 W FR2004002931 W FR 2004002931W WO 2005054595 A8 WO2005054595 A8 WO 2005054595A8
Authority
WO
WIPO (PCT)
Prior art keywords
staircase
struts
ladder
parts
steps
Prior art date
Application number
PCT/FR2004/002931
Other languages
French (fr)
Other versions
WO2005054595B1 (en
WO2005054595A1 (en
Inventor
Francois Ros
Original Assignee
Francois Ros
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
Priority claimed from FR0313812A external-priority patent/FR2862678A1/en
Priority claimed from FR0313811A external-priority patent/FR2862997A1/en
Application filed by Francois Ros filed Critical Francois Ros
Priority to EP04805468.8A priority Critical patent/EP1709259B1/en
Publication of WO2005054595A1 publication Critical patent/WO2005054595A1/en
Publication of WO2005054595B1 publication Critical patent/WO2005054595B1/en
Publication of WO2005054595A8 publication Critical patent/WO2005054595A8/en

Links

Classifications

    • 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
    • E04F11/064—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding with stringers overlapping when folded

Landscapes

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

Abstract

The step device, such as a ladder (1) or staircase, comprises at least two parts (2, 3, 4), both of which are provided with two longitudinal struts(6) and several steps (7) and which can be folded on top of each other due to hinge-type means (5). The width (L) of a step (7) with a supposed zero thickness is greater than e/sin alpha and, at the most, substantially equal to n.e/sin alpha, e being the width of a longitudinal strut (6), alpha being the angle of inclination between the longitudinal direction of the strut (6) and the plane of said step (7) and n being the number of parts. In the extreme top part (4), the steps (7) partially exceed a first same side of the struts (6) and in the extreme bottom part (2), they (7) partially exceed a same second (C2) or even first (C1) side of the struts (6). The steps of the superposed parts (2, 3, 4), when folded are inserted between each other. As a folding staircase, the device can be coupled to a pivoting trap door or a frame inside which a pivoting trap door is mounted.
PCT/FR2004/002931 2003-11-25 2004-11-17 Foldable step device such as a staircase or ladder WO2005054595A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04805468.8A EP1709259B1 (en) 2003-11-25 2004-11-17 Foldable step device, in the form of a staircase or ladder

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
FR0313811 2003-11-25
FR0313812 2003-11-25
FR0313812A FR2862678A1 (en) 2003-11-25 2003-11-25 Foldable ladder for use with swiveling trap door, has three parts including posts and stairs and foldable on each other through articulation unit, where widths of stairs are equal to or greater than widths of posts
FR0313811A FR2862997A1 (en) 2003-11-25 2003-11-25 Folding loft ladder is made from thin steel or aluminum sections to reduce stowage space requirement
FR0409011A FR2862679B1 (en) 2003-11-25 2004-08-20 FOLDING STAIRCASE AND LADDER WITH REDUCED SIZE
FR0409011 2004-08-20

Publications (3)

Publication Number Publication Date
WO2005054595A1 WO2005054595A1 (en) 2005-06-16
WO2005054595B1 WO2005054595B1 (en) 2005-08-11
WO2005054595A8 true WO2005054595A8 (en) 2005-11-17

Family

ID=34556808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2004/002931 WO2005054595A1 (en) 2003-11-25 2004-11-17 Foldable step device such as a staircase or ladder

Country Status (3)

Country Link
EP (1) EP1709259B1 (en)
FR (1) FR2862679B1 (en)
WO (1) WO2005054595A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8091294B2 (en) * 2004-12-22 2012-01-10 Whalen Robert F Folding pet staircase
DE202011001575U1 (en) 2011-01-14 2011-05-12 Dolle A/S Stairs, especially attic stairs
US10151144B2 (en) 2016-12-14 2018-12-11 Werner Co. Ladder, wide rung and method
US10538966B2 (en) * 2017-05-10 2020-01-21 Werner Co. Ceiling ladder, deep step and method
CN109235798A (en) * 2018-10-09 2019-01-18 枣庄京弘电力材料有限公司 A kind of folding ladder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH259760A (en) * 1947-06-06 1949-02-15 Kueng Alfred Set of fittings in ceiling openings for folding stairs.
DE975511C (en) * 1950-11-16 1961-12-14 Ernst Hohenstein Multi-part attic stairs
FR1042678A (en) * 1950-12-06 1953-11-03 Folding attic staircase
US3901353A (en) * 1974-01-14 1975-08-26 Phil Skolnik Disappearing stairway
FR2666365B1 (en) * 1990-09-03 1992-11-27 Rey Henri RETRACTABLE ARTICULATED STAIRCASE.
JPH09291695A (en) * 1996-04-25 1997-11-11 Matsushita Electric Works Ltd Ceiling storage ladder
AT4864U1 (en) * 1998-10-23 2001-12-27 Wipplinger Robert ROOF FLOOR STAIR

Also Published As

Publication number Publication date
EP1709259A1 (en) 2006-10-11
FR2862679B1 (en) 2007-08-10
FR2862679A1 (en) 2005-05-27
WO2005054595B1 (en) 2005-08-11
EP1709259B1 (en) 2013-04-10
WO2005054595A1 (en) 2005-06-16

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