发明名称 |
Roller shutter safety device |
摘要 |
This invention relates to a switching arrangement for use in stopping or reversing an electrically driven roller door when an object lying in its path is struck during closing. The arrangement comprises a switch bar extending the width of the door curtain and projecting below its bottom edge, hinge mounting means securing the bar to the curtain and permitting swing movement about a horizontal axis, resilient loading means urging the bar into a rest position in which the lowermost bar surface is laterally displaced from the axis and a switch actuated by movement of the bar from its rest position.
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申请公布号 |
US4262176(A) |
申请公布日期 |
1981.04.14 |
申请号 |
US19790017817 |
申请日期 |
1979.05.30 |
申请人 |
BYRNE & DAVIDSON DOORS PTY. LIMITED |
发明人 |
KAPITZA, WOLFGANG B.;STEELE, DECEASED, WILLIAM H.;ANNIS-BROWN, LEGAL REPRESENTATIVE, BY MARIE-THERESE |
分类号 |
E06B9/80;E06B9/88;H01H3/16;(IPC1-7):H01H3/16 |
主分类号 |
E06B9/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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