发明名称 |
Telephone cradle switch with protected contact spring set - has lever supported on knife edges and coupled to compression spring through connector |
摘要 |
<p>The contact springs are protected by a cover. A lever transmits the movement of telephone instrument push-buttons to the contact springs, and via a lever a compression spring. The contact springs (2, 3) in the switch case (1) are mounted in segments, determining the position of contacts and the pressure before contact operation. The switch lever (6) is supported on knife-edges (7) in the switch case (1), while the compression spring (8) is hinged by its one end on the switch lever (6) through a spring connector (9). Its other end rests on a projection in a seat (10) above the switch case (6). Except for the springs, all switch components are made of plastics.</p> |
申请公布号 |
FR2355417(A1) |
申请公布日期 |
1978.01.13 |
申请号 |
FR19770018866 |
申请日期 |
1977.06.20 |
申请人 |
RADOMSKA WYTWORNIA TELEFONOW |
发明人 |
KRYSTYNA LUSZCZEWSKA ET STANISLAW JOZWOWICZ;JOZWOWICZ STANISLAW |
分类号 |
H04M1/08;(IPC1-7):04M1/23 |
主分类号 |
H04M1/08 |
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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