Title:
TELESCOPIC LADDER
Document Type and Number:
WIPO Patent Application WO/2017/190615
Kind Code:
A1
Abstract:
Provided is a telescopic ladder, comprising inner leg rods (10) and outer leg rods (20). An opening (26) is formed on a lateral side of each of the outer leg rods (20). The inner leg rods (10) are sleeved in the outer leg rods (20), and the inner leg rods (10) and the outer leg rods (20) can slide relatively to each other. The telescopic ladder also comprises clamping structures for gripping the inner leg rods (10) so as to prevent the inner leg rods (10) from being disengaged from the outer leg rods (20) along the openings (26). The clamping structures are arranged on the outer leg rods (20). The telescopic ladder improves the structural stability, and also reduces welding costs.
Inventors:
LENG LUHAO (CN)
Application Number:
PCT/CN2017/082013
Publication Date:
November 09, 2017
Filing Date:
April 26, 2017
Export Citation:
Assignee:
NEW-TEC INTEGRATION (XIAMEN) CO LTD (CN)
International Classes:
E06C7/08
Foreign References:
| CN2811534Y | 2006-08-30 | |||
| CN200996264Y | 2007-12-26 | |||
| CN205713939U | 2016-11-23 | |||
| CN200971748Y | 2007-11-07 | |||
| US5845744A | 1998-12-08 | |||
| JP2004218355A | 2004-08-05 |
Attorney, Agent or Firm:
SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)
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