发明授权
- 专利标题： Ladder having movable ladder support
- 专利标题（中）： 梯子具有可移动的梯子支撑
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申请号： US702883申请日： 1996-08-26
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公开(公告)号： US5881838A公开(公告)日： 1999-03-16
- 发明人: Paul E. Swanick, Jr.
- 申请人： Paul E. Swanick, Jr.
- 申请人地址： PA Carbondale
- 专利权人： P&S Improvements, Inc.
- 当前专利权人： P&S Improvements, Inc.
- 当前专利权人地址： PA Carbondale
- 主分类号： E06C1/397
- IPC分类号： E06C1/397 ; E06C7/48 ; E04G5/02
摘要：
The invention provides a movable ladder support device, and a ladder which includes that support device. The support device includes a rotatable member such as a wheel housed within the U-shaped section of the support device. The support device is attached to the rail of a ladder. The support device enables the ladder to be vertically repositioned against the surface of an inclined wall without the need to first remove the ladder from the surface.
公开/授权文献
- US4567710A Multiple glazed panel 公开/授权日：1986-02-04
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