Invention Grant
US4517419A Cantilever spring telephone hookswitch adapted for printed wiring card
mounting
失效
悬臂弹簧电话钩开关适用于印刷线路卡安装
- Patent Title: Cantilever spring telephone hookswitch adapted for printed wiring card mounting
- Patent Title (中): 悬臂弹簧电话钩开关适用于印刷线路卡安装
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Application No.: US437973Application Date: 1982-11-01
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Publication No.: US4517419APublication Date: 1985-05-14
- Inventor: Richard B. Kosten
- Applicant: Richard B. Kosten
- Applicant Address: IL Northlake
- Assignee: GTE Communication Systems Corp.
- Current Assignee: GTE Communication Systems Corp.
- Current Assignee Address: IL Northlake
- Main IPC: H01H1/18
- IPC: H01H1/18 ; H04M1/08
Abstract:
A hookswitch mechanism for use in a telephone instrument utilizing a compound form cantilever spring fastened to a printed wiring card with circuit connections made to the printed wiring card. A contact engaging portion on the cantilever spring wipes across a contact located on the printed wiring card before disengaging the contact to insure a clean contact surface regardless of surrounding atmospheric conditions.
Public/Granted literature
- US5532673A Fuel fill monitoring system and method Public/Granted day:1996-07-02
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