SE0003154D0 - Ladder with self-adjusting extension legs - Google Patents

Ladder with self-adjusting extension legs

Info

Publication number
SE0003154D0
SE0003154D0 SE0003154A SE0003154A SE0003154D0 SE 0003154 D0 SE0003154 D0 SE 0003154D0 SE 0003154 A SE0003154 A SE 0003154A SE 0003154 A SE0003154 A SE 0003154A SE 0003154 D0 SE0003154 D0 SE 0003154D0
Authority
SE
Sweden
Prior art keywords
legs
ladder
extension legs
extension
movable
Prior art date
Application number
SE0003154A
Other languages
Swedish (sv)
Other versions
SE517635C2 (en
SE0003154L (en
Inventor
Jan Folke Wallenius
Original Assignee
Jan Folke Wallenius
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 Jan Folke Wallenius filed Critical Jan Folke Wallenius
Priority to SE0003154A priority Critical patent/SE517635C2/en
Publication of SE0003154D0 publication Critical patent/SE0003154D0/en
Priority to AU2001284601A priority patent/AU2001284601A1/en
Priority to EP01963672A priority patent/EP1320658A1/en
Priority to PCT/SE2001/001912 priority patent/WO2002020933A1/en
Publication of SE0003154L publication Critical patent/SE0003154L/en
Publication of SE517635C2 publication Critical patent/SE517635C2/en

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
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The invention relates to a ladder provided with an arrangement for maintaining the ladder in upright position independent of the contour of the supporting surface. This is obtained, according to the invention, by providing the ladder with two extension legs (9,10) which are slidably carried by the side legs (1, 2) of the ladder. The extension legs are suspended by a flexible connection (11) running through a hollow step member (3) at the upper part of the extension legs. The extension legs are journalled movable on the side legs (1, 2) lockable to the side legs by locking controls (16) movable downwards on the side legs. For operating the locking controls there is a further flexible connection (14) arranged between the locking controls (16) and running through a hollow step member at the bottom part of the extension legs (9, 10). Hence, the two extension legs are movable in opposite directions a decided distance, but when the extension legs are moved upwards the locking controls are pulled downwards by the flexible connection (14) causing locking of the extension legs (9, 10) to the side legs (1, 2).
SE0003154A 2000-09-07 2000-09-07 Ladder with self-adjusting extension legs SE517635C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE0003154A SE517635C2 (en) 2000-09-07 2000-09-07 Ladder with self-adjusting extension legs
AU2001284601A AU2001284601A1 (en) 2000-09-07 2001-09-06 Ladder with self-adjusting extension legs
EP01963672A EP1320658A1 (en) 2000-09-07 2001-09-06 Ladder with self-adjusting extension legs
PCT/SE2001/001912 WO2002020933A1 (en) 2000-09-07 2001-09-06 Ladder with self-adjusting extension legs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0003154A SE517635C2 (en) 2000-09-07 2000-09-07 Ladder with self-adjusting extension legs

Publications (3)

Publication Number Publication Date
SE0003154D0 true SE0003154D0 (en) 2000-09-07
SE0003154L SE0003154L (en) 2002-03-08
SE517635C2 SE517635C2 (en) 2002-06-25

Family

ID=20280914

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0003154A SE517635C2 (en) 2000-09-07 2000-09-07 Ladder with self-adjusting extension legs

Country Status (4)

Country Link
EP (1) EP1320658A1 (en)
AU (1) AU2001284601A1 (en)
SE (1) SE517635C2 (en)
WO (1) WO2002020933A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481449A (en) 2010-06-25 2011-12-28 Warrentech Ltd A levelling device
NO20151343A1 (en) * 2015-10-08 2017-04-10 Inventu As Device for leveling ladders, as well as a tensioning device and fastening device for such ladder.
DE102020001940A1 (en) 2020-03-26 2021-09-30 Klaus-Peter Laube Self-regulating stand for ladders and scaffolding stands

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330825A (en) * 1942-04-01 1943-10-05 Henry M Hoit Ladder
US2890824A (en) * 1954-08-26 1959-06-16 Richard F Derby Leg length adjusting apparatus
US4766976A (en) * 1987-08-28 1988-08-30 Emerson Electric Co. Ladder leg extender and leveler

Also Published As

Publication number Publication date
EP1320658A1 (en) 2003-06-25
SE517635C2 (en) 2002-06-25
WO2002020933A1 (en) 2002-03-14
SE0003154L (en) 2002-03-08
AU2001284601A1 (en) 2002-03-22

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Legal Events

Date Code Title Description
NUG Patent has lapsed