AU5650790A - Extension ladder - Google Patents

Extension ladder

Info

Publication number
AU5650790A
AU5650790A AU56507/90A AU5650790A AU5650790A AU 5650790 A AU5650790 A AU 5650790A AU 56507/90 A AU56507/90 A AU 56507/90A AU 5650790 A AU5650790 A AU 5650790A AU 5650790 A AU5650790 A AU 5650790A
Authority
AU
Australia
Prior art keywords
line
extension ladder
ladders
adjacent
ladder
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.)
Abandoned
Application number
AU56507/90A
Inventor
Hans Heggen
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.)
Raufoss AS
Original Assignee
Raufoss AS
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 Raufoss AS filed Critical Raufoss AS
Publication of AU5650790A publication Critical patent/AU5650790A/en
Abandoned 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
    • E06C1/04—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)
  • Adhesives Or Adhesive Processes (AREA)
  • Dental Preparations (AREA)
  • Paints Or Removers (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.
AU56507/90A 1989-05-16 1990-05-16 Extension ladder Abandoned AU5650790A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO891964A NO167473C (en) 1989-05-16 1989-05-16 LIFT LADDER
NO891964 1989-05-16

Publications (1)

Publication Number Publication Date
AU5650790A true AU5650790A (en) 1990-12-18

Family

ID=19892022

Family Applications (1)

Application Number Title Priority Date Filing Date
AU56507/90A Abandoned AU5650790A (en) 1989-05-16 1990-05-16 Extension 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
NO167473C (en) 1991-11-06
FI915377A0 (en) 1991-11-14
DE69008177D1 (en) 1994-05-19
ATE104402T1 (en) 1994-04-15
NO891964D0 (en) 1989-05-16
JPH04505354A (en) 1992-09-17
NO167473B (en) 1991-07-29
EP0479797A1 (en) 1992-04-15
WO1990014491A1 (en) 1990-11-29
NO891964L (en) 1990-11-19
DK0479797T3 (en) 1994-08-08
DE69008177T2 (en) 1994-09-29
EP0479797B1 (en) 1994-04-13

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