发明授权
- 专利标题: Apparatus to lock and unlock scaffold casters
- 专利标题(中): 用于锁定和解锁脚手架的装置
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申请号: US10101469申请日: 2002-03-20
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公开(公告)号: US06871892B2公开(公告)日: 2005-03-29
- 发明人: Douglas A. Holman
- 申请人: Douglas A. Holman
- 代理商 Richard C. Litman
- 主分类号: E04G1/24
- IPC分类号: E04G1/24 ; E04G5/00 ; A47F13/06
摘要:
An apparatus used as a tool, to lock and unlock the casters of a scaffold while the user is on top of a scaffold. The apparatus is an elongated pole and adjustable sleeve with a spring-loaded push button mechanism, to change the length of the apparatus. There are a variety of specially designed heads that are used to adjust the scaffold caster levers in locked and unlocked positions. This is done in place of a user climbing up and down the scaffold and manually locking and unlocking the scaffold caster levers from the ground level. A rubber mallet head or contact bulb is provided near the handle to further adjust the scaffold casters, and a looped strap is also provided to hang the apparatus when not in use.
公开/授权文献
- US20030006620A1 Apparatus to lock and unlock scaffold casters 公开/授权日:2003-01-09