DK0479797T3 - Extendable ladder - Google Patents

Extendable ladder

Info

Publication number
DK0479797T3
DK0479797T3 DK90907530.1T DK90907530T DK0479797T3 DK 0479797 T3 DK0479797 T3 DK 0479797T3 DK 90907530 T DK90907530 T DK 90907530T DK 0479797 T3 DK0479797 T3 DK 0479797T3
Authority
DK
Denmark
Prior art keywords
line
ladders
ladder
adjacent
another
Prior art date
Application number
DK90907530.1T
Other languages
Danish (da)
Inventor
Hans Heggen
Original Assignee
Wibe Ab
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 Wibe Ab filed Critical Wibe Ab
Application granted granted Critical
Publication of DK0479797T3 publication Critical patent/DK0479797T3/en

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
    • E06C1/04—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

Landscapes

  • Ladders (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Dental Preparations (AREA)
  • Paints Or Removers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Programmable Controllers (AREA)

Abstract

An extension ladder comprising at least two separate single ladders (10, 20, 30, 40) which in their starting position lie upon one another and are slidable in relation to one another is shown. One of the two adjacent ladders comprises guide means for the other. Between each adjacent single ladder there is arranged a line pull system comprising line guides (1, 1'; 2, 2'; 3, 3'; 4) over which the line (7) runs and changes direction. Such a line pull system is independently arranged between two adjacent single ladders, so that a four-part extension ladder has three independent line pull systems.
DK90907530.1T 1989-05-16 1990-05-16 Extendable ladder DK0479797T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO891964A NO167473C (en) 1989-05-16 1989-05-16 LIFT LADDER

Publications (1)

Publication Number Publication Date
DK0479797T3 true DK0479797T3 (en) 1994-08-08

Family

ID=19892022

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90907530.1T DK0479797T3 (en) 1989-05-16 1990-05-16 Extendable ladder

Country Status (9)

Country Link
EP (1) EP0479797B1 (en)
JP (1) JPH04505354A (en)
AT (1) ATE104402T1 (en)
AU (1) AU5650790A (en)
DE (1) DE69008177T2 (en)
DK (1) DK0479797T3 (en)
FI (1) FI915377A0 (en)
NO (1) NO167473C (en)
WO (1) WO1990014491A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234615A (en) * 2013-06-10 2014-12-24 镇江跃进机械厂有限公司 Anti-lateral-fall safety ladder
JP6262601B2 (en) * 2014-05-30 2018-01-17 紀美代 中尾 Triple telescopic ladder
CN105888525A (en) * 2016-06-12 2016-08-24 吴江市三达五金工具厂 Combined ladder achieving convenient storage
CN110344746A (en) * 2019-04-29 2019-10-18 珠海五八科技有限公司 A kind of convenient and fast extension ladder of operation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347340A (en) * 1966-01-20 1967-10-17 Werner Co Inc R D Extension ladders
US3402788A (en) * 1967-05-25 1968-09-24 Werner Co Inc R D Extension ladders

Also Published As

Publication number Publication date
WO1990014491A1 (en) 1990-11-29
NO891964L (en) 1990-11-19
EP0479797A1 (en) 1992-04-15
JPH04505354A (en) 1992-09-17
ATE104402T1 (en) 1994-04-15
NO167473C (en) 1991-11-06
EP0479797B1 (en) 1994-04-13
FI915377A0 (en) 1991-11-14
NO891964D0 (en) 1989-05-16
DE69008177D1 (en) 1994-05-19
NO167473B (en) 1991-07-29
DE69008177T2 (en) 1994-09-29
AU5650790A (en) 1990-12-18

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