发明授权
- 专利标题： winding and anti-drop assembly for door counterbalance system
- 专利标题（中）： 用于门平衡系统的绕组和防滴装配
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申请号： US11023203申请日： 2004-12-27
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公开(公告)号： US07254868B2公开(公告)日： 2007-08-14
- 发明人: Willis J. Mullet , Gregory M. Rusnak , John Foreman
- 申请人： Willis J. Mullet , Gregory M. Rusnak , John Foreman
- 申请人地址： US OH Mt. Hope
- 专利权人： Wayne-Dalton Corp.
- 当前专利权人： Wayne-Dalton Corp.
- 当前专利权人地址： US OH Mt. Hope
- 代理机构： Renner Kenner Greive Bobak Taylor & Weber
- 主分类号： E05F1/00
- IPC分类号： E05F1/00
摘要：
A counterbalance system (25) for a door (D) movable between a closed position and an open position having an axle (20), a cable drum (15) attached to the axle, a winding shaft (35) interconnected with the axle by a counterbalance spring (26), and a pawl (70) selectively movable between a first position for adjusting tension in the counterbalance spring and a second position for preventing rotation of the cable drum upon failure of the counterbalance spring, thereby limiting movement of the door toward the closed position.
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