发明名称 |
Holding device for door closers |
摘要 |
A door holding device for door closers is described in which a door is held only at a predetermined angle of opening and in which the selected holding position can remain unchanged over a long period of time but can nevertheless be released by electrical means. For this purpose the switching of the door is effected, starting from a known mechanical door holding device which can be switched in and switched out, via a control unit which is biased into a door holding position by the hydraulic pressure which is in any event present in the closer and which can be released again via a magnetic valve.
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申请公布号 |
US4663800(A) |
申请公布日期 |
1987.05.12 |
申请号 |
US19850769710 |
申请日期 |
1985.08.27 |
申请人 |
GEZE GMBH |
发明人 |
METTENLEITER, KARL;STORANDT, RALF;SCHECK, GEORG |
分类号 |
E05F3/04;E05F3/22;(IPC1-7):E05F3/04 |
主分类号 |
E05F3/04 |
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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