GB201120003D0 - A kind of round tube extension ladder - Google Patents

A kind of round tube extension ladder

Info

Publication number
GB201120003D0
GB201120003D0 GBGB1120003.7A GB201120003A GB201120003D0 GB 201120003 D0 GB201120003 D0 GB 201120003D0 GB 201120003 A GB201120003 A GB 201120003A GB 201120003 D0 GB201120003 D0 GB 201120003D0
Authority
GB
United Kingdom
Prior art keywords
locking pin
ladder frame
round tube
extension ladder
tube extension
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.)
Withdrawn
Application number
GBGB1120003.7A
Other versions
GB2496670A (en
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.)
ZHOU KEHAI
Original Assignee
ZHOU KEHAI
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 ZHOU KEHAI filed Critical ZHOU KEHAI
Priority to GB1120003.7A priority Critical patent/GB2496670A/en
Publication of GB201120003D0 publication Critical patent/GB201120003D0/en
Publication of GB2496670A publication Critical patent/GB2496670A/en
Withdrawn legal-status Critical Current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
    • E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other

Landscapes

  • Ladders (AREA)

Abstract

A collapsible telescopic ladder is composed of several rungs, several ladder frame tubes 4, 7, 9 and bottom covers 5. The bottom covers are mounted at the lower end of the ladder frame tubes. There is a latch on every rung and is composed of a spring-loaded locking pin 2. There is a locking pin hole in every ladder frame tube which matches with the locking pin. The projecting end of the locking pin is spherical. A taper on every bottom cover engages the sphere of the locking pin to push it out of supporting engagement with the adjacent ladder frame tube. A button 1 may be provided on the locking pin.
GB1120003.7A 2011-11-21 2011-11-21 Telescopic ladder Withdrawn GB2496670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1120003.7A GB2496670A (en) 2011-11-21 2011-11-21 Telescopic ladder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1120003.7A GB2496670A (en) 2011-11-21 2011-11-21 Telescopic ladder

Publications (2)

Publication Number Publication Date
GB201120003D0 true GB201120003D0 (en) 2012-01-04
GB2496670A GB2496670A (en) 2013-05-22

Family

ID=45475430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1120003.7A Withdrawn GB2496670A (en) 2011-11-21 2011-11-21 Telescopic ladder

Country Status (1)

Country Link
GB (1) GB2496670A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105672863A (en) * 2014-11-17 2016-06-15 国家电网公司 Slideway-type insulation telescoping work ladder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424839C2 (en) * 1994-07-14 1996-11-21 Bolwin Sabine Collapsible ladder
SE523253C2 (en) * 2001-06-13 2004-04-06 Telesteps Ab Foldable ladder
CN201507234U (en) * 2009-09-30 2010-06-16 杨建明 One-way extension ladder

Also Published As

Publication number Publication date
GB2496670A (en) 2013-05-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)