EP1918479B1 - Stair system - Google Patents

Stair system Download PDF

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Publication number
EP1918479B1
EP1918479B1 EP07119113A EP07119113A EP1918479B1 EP 1918479 B1 EP1918479 B1 EP 1918479B1 EP 07119113 A EP07119113 A EP 07119113A EP 07119113 A EP07119113 A EP 07119113A EP 1918479 B1 EP1918479 B1 EP 1918479B1
Authority
EP
European Patent Office
Prior art keywords
stair
scissor
scissors
ceiling
roof
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.)
Revoked
Application number
EP07119113A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1918479A1 (en
Inventor
Peter Hoogerdijk
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.)
Gorter Group BV
Original Assignee
Gorter Group BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38015380&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1918479(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gorter Group BV filed Critical Gorter Group BV
Publication of EP1918479A1 publication Critical patent/EP1918479A1/en
Application granted granted Critical
Publication of EP1918479B1 publication Critical patent/EP1918479B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04F11/062—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding
    • E04F11/066—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding folding like scissors or accordions
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/52—Ladders in general with non-rigid longitudinal members
    • E06C1/54—Ladders in general with non-rigid longitudinal members of the lazy-tongs type

Definitions

  • the invention relates to a stair system comprising
  • Such a stair system is generally known.
  • the scissor stair is accommodated in the opening of the ceiling in the retracted position thereof, which opening is closed by a cover, so that the scissor stair is not exposed to view and no longer extends into the space below the ceiling.
  • the extended position of the scissor stair access is provided to the stair positioned in the plenum, so that access can be gained to the roof hatch.
  • the stair in the plenum consists of steel steps in the form of brackets, which are fixedly mounted to the walls of the plenum.
  • a drawback of the known stair system is that it does not meet the current (statutory) safety requirements. In practice accidents frequently take place (often resulting in serious physical injury), since the vertically oriented stair in the plenum includes an obtuse angle with the scissor stair and the spacing between adjacent steps of the stair in the plenum is different from the spacing between the steps of the scissor stair.
  • the object of the invention is to improve the prior art, in particular in the sense that a safe stair system is proposed which meets all the applicable safety requirements.
  • the second scissor stair is pivotally connected to a frame of the roof hatch at one end and to the first scissor stair at the other end. It is also possible to use a pivoted connection to a structure surrounding a roof opening instead of a pivoted connection to the frame of the roof hatch.
  • the first scissor stair is pivotally connected to a frame of the opening in the ceiling at its end remote from the floor surface.
  • the first scissor stair can be retracted under spring action.
  • the scissor members of the scissors of the first scissor stair and the second scissor stair are connected by central hinges in the centre and by outer hinges at the outer ends.
  • the angle of inclination of the steps of the first scissor stair and the second scissor stair is adjustable.
  • the first scissor stair and the second scissor stair are made of cast aluminium.
  • said sales are made of a material selected from the group consisting of metal, wood and plastic material.
  • US-A-2050593 discloses a system according to the preamble of claim 1.
  • European patent publication no. 0 633 386 discloses an auto life-saving ladder comprising several single scissor stairs, wherein in case of an emergency each scissor stair is caused to unfold across a floor level of a building.
  • Figure 1 shows a stair system 1 consisting of a first (lower) scissor stair 2 and a second (upper) scissor stair 3, between which steps 6 are mounted.
  • the first scissor stair 2 which is mounted in a ceiling 4 of a building, is built up of two scissors made up of individual scissor members 5, between which steps 6 are mounted.
  • a cover 9 is pivotally connected to the frame 7, by means of which cover the opening 8 can be closed.
  • the other end of the scissor stair 2 remote from the ceiling 4 is supported on a floor surface 10.
  • the individual scissor members are connected by central hinges 11 and outer hinges 12.
  • Two adjacent outer hinges 12 of the two scissors are made up of a half-shaft (not shown), which connects the two scissors and consequently makes it possible to pull the two scissors in and out or, in other words, retract and extend the two scissors, simultaneously.
  • the scissor stair 2 In the extended position, the scissor stair 2 is supported on the floor surface 10 of the building ( figures 1 and 2 ), whilst in the retracted position the scissor stair 2 is accommodated in the opening 8 in the ceiling 4 ( figure 3 ) .
  • the second scissor stair 3 disposed between the ceiling 4 and a roof 13 of the building provided access to a hatch 14 on the roof 13.
  • the second scissor stair 3 likewise consists of two scissors each made up of scissor members 15, whilst steps 16 are mounted therebetween.
  • the second scissor stair 3 is pivotally connected to a frame 17 of the roof hatch 14 at one end (i.e. the end facing towards the roof 13) and to the first scissor stair 2 at the other end (i.e. the end remote from the roof 13).
  • the two scissors of the second stair 3 can be pulled in and out or, in other words, be retracted and extended, between a retracted position ( figure 3 ) and an extended position, in which the second scissor stair and 3 is in line with the first scissor stair 2 ( figures 1 and 2 ).
  • the individual scissor members are connected by central hinges 18 and outer hinges 19, whilst two adjacent outer edges 19 of the two scissors are made up of a half-shaft (not shown), which connects the two scissors and thus makes it possible to pull the two scissors in and out or, in other words, retract and extend the two scissors simultaneously.
  • the scissors of the second scissor stair 3 are in line with the scissors of the first scissor stair 2 in the extended position, with the spacing between adjacent steps of the second scissor stair 3 being equal to the spacing between adjacent steps of the first scissor stair 2.
  • the scissor stairs 2,3 form one scissor stair in their extended positions, in the sense that the two scissor stairs 2,3 do not include an angle (other than 0°) with each other.
  • the second scissor stair 3 connects to the first scissor stair 2 in its extended position, in the sense that the spacing between the lowermost step 16 of the second scissor stair 3 and the uppermost step 6 of the first scissor stair 2 is equal to the spacing between adjacent steps of the respective scissor stairs.
  • the angle of inclination of the steps 6,16 of the first and the second scissor stairs is adjustable.
  • Figure 3 shows the first scissor stair 2 and the second scissor stair 3 in their respective retracted positions.
  • the first scissor stair 2 is accommodated in the opening 8 in the ceiling 4, and that in a horizontal position.
  • the second scissor stair 3 takes up a vertical position when retracted.
  • the first civil stair 2 can be easily retracted under the influence of the action of a spring construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Ladders (AREA)
EP07119113A 2006-11-01 2007-10-23 Stair system Revoked EP1918479B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2000298A NL2000298C2 (nl) 2006-11-01 2006-11-01 Trapsysteem.

Publications (2)

Publication Number Publication Date
EP1918479A1 EP1918479A1 (en) 2008-05-07
EP1918479B1 true EP1918479B1 (en) 2011-06-22

Family

ID=38015380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07119113A Revoked EP1918479B1 (en) 2006-11-01 2007-10-23 Stair system

Country Status (4)

Country Link
EP (1) EP1918479B1 (nl)
AT (1) ATE513956T1 (nl)
ES (1) ES2368263T3 (nl)
NL (1) NL2000298C2 (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11851292B2 (en) 2018-04-22 2023-12-26 Mp Zenrobotics Oy Waste sorting gantry robot
US12122046B2 (en) 2020-06-24 2024-10-22 Mp Zenrobotics Oy Waste sorting robot

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2793931A1 (en) * 2010-03-22 2011-09-29 Barjoh Pty Ltd Access system and device for earthmoving vehicles, and modes of employment thereof
WO2017098286A1 (en) 2015-12-08 2017-06-15 Tchavtchanidze Zurabi Portable folding ladder-bridge
SE543177C2 (en) * 2018-04-22 2020-10-20 Zenrobotics Oy Waste sorting gantry robot comprising an integrated chute and maintenance door
SE544741C2 (en) 2018-05-11 2022-11-01 Genie Ind Bv Waste Sorting Gantry Robot and associated method
CN110206340B (zh) * 2019-06-20 2024-03-19 中国电建集团贵阳勘测设计研究院有限公司 一种伸缩楼梯
CN111391760A (zh) * 2020-04-27 2020-07-10 江苏捷诚车载电子信息工程有限公司 自动收放登舱梯
CN112012346B (zh) * 2020-08-28 2021-09-21 常州工学院 一种两侧开闭式机械折叠阁楼
SE544103C2 (en) 2020-10-28 2021-12-21 Zenrobotics Oy Waste Sorting Robot with gripper that releases waste object at a throw position

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050593A (en) * 1933-07-13 1936-08-11 Higgin Mfg Co Collapsible stairway
US2567302A (en) * 1947-08-18 1951-09-11 Sip Karel Foldable ladder
GB1498586A (en) * 1975-03-13 1978-01-18 Naka Tech Lab Movable emergency escape
US5311965A (en) * 1993-05-18 1994-05-17 Wu Hsien Jung Auto life-saving ladder
FR2748641B1 (fr) 1996-05-17 1998-08-07 Verslype Jean Marc Dispositif reducteur de la longueur, et eventuellement de la largeur, d'un lit a barreaux
DE19748236C2 (de) * 1997-10-31 2002-04-18 Columbus Treppen Gmbh Bodentreppe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11851292B2 (en) 2018-04-22 2023-12-26 Mp Zenrobotics Oy Waste sorting gantry robot
US12122046B2 (en) 2020-06-24 2024-10-22 Mp Zenrobotics Oy Waste sorting robot

Also Published As

Publication number Publication date
NL2000298C2 (nl) 2008-05-06
ATE513956T1 (de) 2011-07-15
ES2368263T3 (es) 2011-11-15
EP1918479A1 (en) 2008-05-07

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