DE3167399D1 - Step ladder - Google Patents

Step ladder

Info

Publication number
DE3167399D1
DE3167399D1 DE8181103153T DE3167399T DE3167399D1 DE 3167399 D1 DE3167399 D1 DE 3167399D1 DE 8181103153 T DE8181103153 T DE 8181103153T DE 3167399 T DE3167399 T DE 3167399T DE 3167399 D1 DE3167399 D1 DE 3167399D1
Authority
DE
Germany
Prior art keywords
ladder
side rails
pivoted
links
props
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
DE8181103153T
Other languages
German (de)
Inventor
Adam Klenk
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.)
Individual
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
Priority to DE8181103153T priority Critical patent/DE3167399D1/en
Application granted granted Critical
Publication of DE3167399D1 publication Critical patent/DE3167399D1/en
Expired legal-status Critical Current

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
    • E06C1/38—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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Programmable Controllers (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

1. A stepladder, consisting of a ladder portion (1) which comprises rungs (7) and includes two ladder side rails (5, 6), and of a support portion (2) which includes two support side rails (8, 9) the upper ends of which are connected in articulated fashion to the upper ends of the ladder side rails (5, 6), and of four links (13, 14) the outer ends of which are pivoted to one each of the four side rails (5, 6, 8, 9) and the inner ends of which are connected in pairs by a joint (16), thereby limiting the angle of opening between the ladder portion (1) and the support portion (2), and of two ladder props (3, 4) adapted to be swung out laterally in opposite directions in the central plane of the ladder and pivoted in the area of the upper side rail ends, and of two spreader bars (34) which are connected at their respective inner ends to a pair of links (12) and at their outer ends to either one of the two ladder props (3, 4), with their axes extending parallel to the pivot axis of each ladder prop (3, 4), so as to permit the automatic swinging out and in of the two ladder props (3, 4) upon opening and closing, respectively, of the stepladder, characterized in that the links (13, 14) are pivoted at the outside of the side rails (5, 6, 8, 9), extend at right angles with respect to their own pivot axes (15), and, in pairs, interconnect a ladder side rail (5, 6) and a support side rail (8, 9), and in that one of the two spreader bars (34) each is pivotably connected at its inner end to the two joints (16).
DE8181103153T 1980-04-26 1981-04-27 Step ladder Expired DE3167399D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8181103153T DE3167399D1 (en) 1980-04-26 1981-04-27 Step ladder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3016264A DE3016264C2 (en) 1980-04-26 1980-04-26 Stepladder
DE8181103153T DE3167399D1 (en) 1980-04-26 1981-04-27 Step ladder

Publications (1)

Publication Number Publication Date
DE3167399D1 true DE3167399D1 (en) 1985-01-10

Family

ID=6101116

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3016264A Expired DE3016264C2 (en) 1980-04-26 1980-04-26 Stepladder
DE8181103153T Expired DE3167399D1 (en) 1980-04-26 1981-04-27 Step ladder

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3016264A Expired DE3016264C2 (en) 1980-04-26 1980-04-26 Stepladder

Country Status (3)

Country Link
EP (1) EP0039078B1 (en)
AT (1) ATE10529T1 (en)
DE (2) DE3016264C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE23599T1 (en) * 1982-11-02 1986-11-15 Helm Geb Neundoerfer Caecilia STEP LADDER.
DE3621407A1 (en) * 1986-06-26 1988-01-14 Struewer Metallfab Heinrich Stepladder
GB2207176A (en) * 1987-07-15 1989-01-25 Trevor Perry Support apparatus
US5443136A (en) * 1994-06-24 1995-08-22 Edward J. Ott, III Safety stepladder
AU736211B2 (en) * 1998-03-13 2001-07-26 Plank Magic Pty Ltd Stabilising and handrail assemblies for trestles
US7255198B1 (en) 2004-10-25 2007-08-14 Jennhwa Alan Lo Tripod extension stepladder
CN109611017B (en) * 2018-12-18 2020-05-05 南京旭羽睿材料科技有限公司 Safe and reliable type gardens ladder

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1135336A (en) * 1914-06-06 1915-04-13 Fred E Van Houten Step-ladder.
US1415791A (en) * 1921-03-05 1922-05-09 Caronia Frank Joseph Stepladder
US1496201A (en) * 1922-01-11 1924-06-03 Russell O Webster Self-supporting extension ladder
US1610596A (en) * 1925-04-28 1926-12-14 Fred J Bird Extensible side brace for stepladders
US1683422A (en) * 1927-04-11 1928-09-04 James W Stevenson Ladder
US1924213A (en) * 1929-10-17 1933-08-29 William P Newman Stepladder
US2997127A (en) * 1959-10-07 1961-08-22 Wojtowicz Michael Stepladder with improved stabilizing legs
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
AU493550B1 (en) * 1974-10-23 1977-03-31 Henry Halkerston Improved ladder f

Also Published As

Publication number Publication date
EP0039078A3 (en) 1981-12-23
DE3016264A1 (en) 1981-11-05
EP0039078B1 (en) 1984-11-28
DE3016264C2 (en) 1982-10-14
ATE10529T1 (en) 1984-12-15
EP0039078A2 (en) 1981-11-04

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee