DE2949636A1 - Verriegelungsvorrichtung fuer die verriegelnde abstuetzung eines ausschiebbaren leiterteils einer freistehenden leiter - Google Patents

Verriegelungsvorrichtung fuer die verriegelnde abstuetzung eines ausschiebbaren leiterteils einer freistehenden leiter

Info

Publication number
DE2949636A1
DE2949636A1 DE19792949636 DE2949636A DE2949636A1 DE 2949636 A1 DE2949636 A1 DE 2949636A1 DE 19792949636 DE19792949636 DE 19792949636 DE 2949636 A DE2949636 A DE 2949636A DE 2949636 A1 DE2949636 A1 DE 2949636A1
Authority
DE
Germany
Prior art keywords
rung
ladder
locking
extendable
locking device
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.)
Ceased
Application number
DE19792949636
Other languages
German (de)
English (en)
Inventor
Donald L Shawkey
Kenneth J Spear
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.)
Werner Co
Original Assignee
Werner Co
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 Werner Co filed Critical Werner Co
Publication of DE2949636A1 publication Critical patent/DE2949636A1/de
Ceased legal-status Critical Current

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
    • E06C7/06—Securing devices or hooks for parts of extensible ladders
    • 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
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
    • 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
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
DE19792949636 1978-12-11 1979-12-10 Verriegelungsvorrichtung fuer die verriegelnde abstuetzung eines ausschiebbaren leiterteils einer freistehenden leiter Ceased DE2949636A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/968,210 US4240522A (en) 1978-12-11 1978-12-11 Extension trestle ladder

Publications (1)

Publication Number Publication Date
DE2949636A1 true DE2949636A1 (de) 1980-06-19

Family

ID=25513912

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792949636 Ceased DE2949636A1 (de) 1978-12-11 1979-12-10 Verriegelungsvorrichtung fuer die verriegelnde abstuetzung eines ausschiebbaren leiterteils einer freistehenden leiter

Country Status (11)

Country Link
US (1) US4240522A (enExample)
JP (1) JPS5581994A (enExample)
AU (1) AU526911B2 (enExample)
BR (1) BR7907958A (enExample)
CA (1) CA1123799A (enExample)
DE (1) DE2949636A1 (enExample)
ES (1) ES253567Y (enExample)
FR (1) FR2444152A1 (enExample)
GB (1) GB2036845B (enExample)
NL (1) NL7908558A (enExample)
NZ (1) NZ192044A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3222807A1 (en) * 2016-03-22 2017-09-27 Werner Co. Assembly, plank adapter for a work stand and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9022043D0 (en) * 1990-10-10 1990-11-21 Daniels Seymour C Stair apparatus
CA2054670C (en) * 1990-11-06 1999-05-25 Gerald O. Hustad Food package having a compartmentalized rigid base tray
US5740575A (en) * 1995-09-29 1998-04-21 Gordon; Julian D. Ramp systems
US5922376A (en) * 1996-01-02 1999-07-13 Privert; Peter Nestable food and beverage package
CA2215873C (en) * 1997-09-10 2003-12-02 J.M. Schneider Inc. Improvements in packages for a food tray
US8992388B2 (en) * 2011-06-10 2015-03-31 Gym-Mark, Inc. Modular ladder frame playground system
CN109025781A (zh) * 2018-10-29 2018-12-18 中航鼎衡造船有限公司 一种滑动型人字梯

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965311A (en) * 1933-09-09 1934-07-03 Herman B Gaffers Combined extension ladder and trestle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838831A (en) * 1906-01-04 1906-12-18 Daniel W Church Extension step-ladder.
US947810A (en) * 1908-10-27 1910-02-01 Wright L Glidden Extension ladder and trestle.
US1140390A (en) * 1913-04-29 1915-05-25 Fred H Moulton Extension-trestle.
US2210803A (en) * 1938-08-25 1940-08-06 Stanley E Dunn Extension ladder
US2144440A (en) * 1938-09-16 1939-01-17 Herman B Gaffers Extension ladder trestle
US2947378A (en) * 1959-06-29 1960-08-02 Bergur L Brynjolfsson Extensible trestle
JPS4912354U (enExample) * 1972-05-15 1974-02-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965311A (en) * 1933-09-09 1934-07-03 Herman B Gaffers Combined extension ladder and trestle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3222807A1 (en) * 2016-03-22 2017-09-27 Werner Co. Assembly, plank adapter for a work stand and method
CN107217826A (zh) * 2016-03-22 2017-09-29 威那公司 组合件、工作台、条板适配器及用于使用户站在地面以上的方法
AU2019200450B2 (en) * 2016-03-22 2021-02-04 Werner Co. Assembly, plank adapter for a work stand and method
EP4043690A1 (en) * 2016-03-22 2022-08-17 Werner Co. Assembly

Also Published As

Publication number Publication date
AU526911B2 (en) 1983-02-03
JPS5581994A (en) 1980-06-20
ES253567U (es) 1981-06-16
BR7907958A (pt) 1980-07-08
NL7908558A (nl) 1980-06-13
JPS6342069B2 (enExample) 1988-08-19
FR2444152B1 (enExample) 1983-06-17
US4240522A (en) 1980-12-23
ES253567Y (es) 1981-12-01
NZ192044A (en) 1982-05-25
AU5364379A (en) 1980-07-10
GB2036845A (en) 1980-07-02
FR2444152A1 (fr) 1980-07-11
GB2036845B (en) 1983-01-06
CA1123799A (en) 1982-05-18

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: E04G 1/30

8131 Rejection