EP0038428B1 - Ferrure de tête articulée pour échelles et escaliers de grenier escamotables - Google Patents

Ferrure de tête articulée pour échelles et escaliers de grenier escamotables Download PDF

Info

Publication number
EP0038428B1
EP0038428B1 EP81102149A EP81102149A EP0038428B1 EP 0038428 B1 EP0038428 B1 EP 0038428B1 EP 81102149 A EP81102149 A EP 81102149A EP 81102149 A EP81102149 A EP 81102149A EP 0038428 B1 EP0038428 B1 EP 0038428B1
Authority
EP
European Patent Office
Prior art keywords
ladder
retractable
stairs
loft
trap
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.)
Expired
Application number
EP81102149A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0038428A3 (en
EP0038428A2 (fr
Inventor
Michel Lavrard
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.)
Sa Manufacture D'armes Et Cycles De Chatellerault
Original Assignee
Sa Manufacture D'armes Et Cycles De Chatellerault
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 Sa Manufacture D'armes Et Cycles De Chatellerault filed Critical Sa Manufacture D'armes Et Cycles De Chatellerault
Publication of EP0038428A2 publication Critical patent/EP0038428A2/fr
Publication of EP0038428A3 publication Critical patent/EP0038428A3/fr
Application granted granted Critical
Publication of EP0038428B1 publication Critical patent/EP0038428B1/fr
Expired legal-status Critical Current

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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
    • E04F11/068—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic telescopic

Definitions

  • the present invention relates to an articulated head fitting for retractable attic ladders or stairs, articulated on the one hand on the top of the hatch and, on the other hand, on a slide on which slides a ladder or a retractable attic staircase.
  • the object of the present invention relates to an articulated head fitting for attic ladders and stairs, of a type conforming to GB-A-903608, composed of several sections which can be deployed by sliding one over the other, the upper section supporting the folded state of the other sections, all of the sections once folded being retractable through a hatch; fitting comprising two carrying arms located on either side of the upper section of the ladder or staircase, each arm being pivotally mounted around an axis located near the edge of the hatch, the arms being connected to the upper section of the ladder or staircase by means of sliding of the slide-slide type allowing said upper section to move in its plane in the sliding direction of the different sections.
  • the desired objective is achieved while the pivoting of the arms relative to the upper edge of the hatch is effected by an articulation of the type constituted by a horizontal axis rotating in two fixed stirrups and integral with a joist constituting the border of the hatch, said articulation being situated at one end of the arms in any place of the joist, and in that the other end of the arms is articulated on two slides on which the lateral uprights of the section of the ladder move or staircase, by means of an axis connecting said slides.
  • the hinged head fitting for a ladder or retractable attic staircase is composed of two carrying arms (1). These two carrying arms are articulated around an axis (3) threaded at its two ends and resting on two stirrups (2) secured to the joist of the hatch by means of lag screws (16).
  • the free assembly in rotation of the two carrying arms (1) of the axis (3) and the two brackets (2) is obtained by means of two nuts (4) and two spring washers (5) screwed on the two ends threaded on said axis (3).
  • This latter arrangement makes it possible to obtain friction on rotation, offering the possibility of maintaining the carrying arms (1) in the desired position during the handling of the ladder or of the retractable attic staircase.
  • a stop (14) adjustable in height on the upper section of the ladder or of the retractable attic staircase limits the travel of said section during folding.
  • a pawl (10) makes it possible to immobilize the upper section of the ladder or of the retractable attic staircase on the slide (7).
  • This ratchet (10) free to rotate pivots under the effect of its own weight around an axis (11) and has a lug (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP81102149A 1980-04-22 1981-03-21 Ferrure de tête articulée pour échelles et escaliers de grenier escamotables Expired EP0038428B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8009064A FR2480833A1 (fr) 1980-04-22 1980-04-22 Ferrure de tete articulee pour echelles et escaliers de grenier escamotables
FR8009064 1980-04-22

Publications (3)

Publication Number Publication Date
EP0038428A2 EP0038428A2 (fr) 1981-10-28
EP0038428A3 EP0038428A3 (en) 1982-04-07
EP0038428B1 true EP0038428B1 (fr) 1984-08-08

Family

ID=9241238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102149A Expired EP0038428B1 (fr) 1980-04-22 1981-03-21 Ferrure de tête articulée pour échelles et escaliers de grenier escamotables

Country Status (3)

Country Link
EP (1) EP0038428B1 (enrdf_load_stackoverflow)
DE (1) DE3165335D1 (enrdf_load_stackoverflow)
FR (1) FR2480833A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2537634B1 (fr) * 1982-12-13 1986-10-17 Rey Henri Escalier escamotable
FR2594874B1 (fr) * 1986-02-21 1988-05-06 Chatellerault Armes Cycles Ferrure de tete articulee et compensee pour escalier de grenier escamotable
GB9107912D0 (en) * 1991-04-13 1991-05-29 Knight Hugh P Improved loft access arrangement
CN112127661B (zh) * 2020-08-17 2021-11-12 聊城绿天使科技发展有限公司 一种可移动的信息亭

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH259028A (de) * 1947-06-18 1948-12-31 Feldmann Ernst Aufzugtreppenanlage.
GB903608A (en) * 1960-06-11 1962-08-15 John Henry Lawson King Improvements in or relating to extendable ladders
FR1456828A (fr) * 1965-09-13 1966-07-08 Gubri Sa Ets L Perfectionnements apportés aux échelles ou escaliers escamotables par une trappe, notamment par une trappe de grenier
FR1481869A (fr) * 1966-06-03 1967-05-19 Perfectionnements aux escaliers escamotables

Also Published As

Publication number Publication date
EP0038428A3 (en) 1982-04-07
FR2480833B1 (enrdf_load_stackoverflow) 1983-01-07
FR2480833A1 (fr) 1981-10-23
DE3165335D1 (en) 1984-09-13
EP0038428A2 (fr) 1981-10-28

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