Shock isolation for selective call receivers

Details Shock isolation for selective call receivers Shock isolation for selective call receivers

H - Electricity

04

B

H04B 1/08 (2006.01) H04Q 7/18 (2006.01)

Patent

CA 2102293

A shock isolator (30) is provided within the housing (38) of a selective call receiver to substantially increase the natural fre- quency 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. Th? ??yl rub- ber has a damping of at least 25 % (preferably 50 %) and a Durometer of between 50 and 70 type A (prererably 60).

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