Title:
LADDER STRUCTURE
Document Type and Number:
Japanese Patent JP2001164856
Kind Code:
A
Abstract:
To provide a ladder capable of being manufactured easily at an execution site and allowing a worker to ascend or descend it safely.
Single pipes 1, 1, 1 are used as supports, and cross beam members 2 concurrently serving as tread sash bars and protective frames are fixed to the single pipes 1, 1, 1 by clamps 3, 3, 3 at prescribed intervals to form a cage-shaped ladder L.
Inventors:
YAMASHITA HIROSHIGE
Application Number:
JP34872399A
Publication Date:
June 19, 2001
Filing Date:
December 08, 1999
Export Citation:
Assignee:
KUMAGAI GUMI CO LTD
International Classes:
E21D7/00; E06C1/38; E06C7/08; E06C7/18; E06C9/08; (IPC1-7): E06C1/38; E06C7/08
Attorney, Agent or Firm:
Takayoshi Hayashi