发明授权
- 专利标题： Shock isolation for selective call receivers
- 专利标题（中）： 选择呼叫接收机的震动隔离
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申请号： US698880申请日： 1991-05-13
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公开(公告)号： US5307508A公开(公告)日： 1994-04-26
- 发明人: Thomas J. Rollins , Charles W. Mooney , Irving H. Holden
- 申请人： Thomas J. Rollins , Charles W. Mooney , Irving H. Holden
- 申请人地址： IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： IL Schaumburg
- 主分类号： H04B1/08
- IPC分类号： H04B1/08 ; H04Q7/14 ; H05K7/14 ; H04B7/00
摘要：
A shock isolator (30) is provided within the housing (38) of a selective call receiver to substantially increase the natural frequency of vibration of the housing (38) and the printed circuit boards (54, 56) within the housing. The shock isolator (30) is a body of elastomeric material, preferably butyl rubber, which has component receiving apertures (32) molded therein for receiving the components (46, 48, 50) on the printed circuit board while at the same time contacting the printed circuit board. The butyl rubber has a damping of at least 25% (preferably 50%) and a Durometer of between 50 and 70 type A (preferably 60).
公开/授权文献
- USD294346S Push-button electric microswitch 公开/授权日：1988-02-23
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