发明公开
- 专利标题： WINDING AND ANTI-DROP ASSEMBLY FOR DOOR COUNTERBALANCE SYSTEM
- 专利标题（中）： 绕组和秋天保护令适用门重系统
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申请号： EP05854762.1申请日： 2005-12-21
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公开(公告)号： EP1831494A2公开(公告)日： 2007-09-12
- 发明人: MULLETT, Willis J. , RUSNAK, Gregory M. , FOREMAN, John
- 申请人： WAYNE-DALTON CORP.
- 申请人地址： One Door Drive, P.O. Box 67 Mt. Hope, OH 44660 US
- 专利权人： WAYNE-DALTON CORP.
- 当前专利权人： WAYNE-DALTON CORP.
- 当前专利权人地址： One Door Drive, P.O. Box 67 Mt. Hope, OH 44660 US
- 代理机构： Dawson, Elizabeth Ann
- 优先权： US23203 20041227
- 国际公布： WO2006071632 20060706
- 主分类号： E05D15/24
- IPC分类号： E05D15/24 ; E05D13/00 ; E05F15/16
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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