发明授权
- 专利标题: Collapsible ladder
- 专利标题(中): 可折叠的梯子
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申请号: US366405申请日: 1994-12-29
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公开(公告)号: US5495915A公开(公告)日: 1996-03-05
- 发明人: James T. Weston , Richard Weston
- 申请人: James T. Weston , Richard Weston
- 申请人地址: NY New City IEX Dublin
- 专利权人: McDonnell; Charles A.,Fitzgerald; Fergus R.
- 当前专利权人: McDonnell; Charles A.,Fitzgerald; Fergus R.
- 当前专利权人地址: NY New City IEX Dublin
- 优先权: GBX9010990 19900526; GBX9026295 19901224; GBX9008092 19910410
- 主分类号: E06C1/12
- IPC分类号: E06C1/12
摘要:
A collapsible ladder comprises telescopically collapsible sections, and latch mechanisms in each of the rungs for automatically locking the sections relative to one another when the sections are extended. The latch mechanisms are arranged to release the sections when a rung is collaped against the next lower rung.
公开/授权文献
- US6020566A Device of balancing lever in a multiplicative key 公开/授权日:2000-02-01
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