Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2003-04-16
2008-12-09
Nguyen, Vinh P (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S761010
Reexamination Certificate
active
07463041
ABSTRACT:
A holder1is formed by laminating support members3, 4and5and passing holder holes2through them. A pair of needle members9and10are provided on either end of the coil spring8. Each of the needle members9on one side is prevented from coming off by one of the support members3. The length L between the flange portion9breceived in a large diameter hole2bof the holder hole and the tip of the needle portion10ais made substantially equal to the depth D of the large diameter hole2bof the holder1. Because the coil springs are thus placed substantially in an unstressed state, when at least one of the needle members is prevented from projecting from a corresponding end of the holder hole, the part that prevents the needle members from coming off is not subjected to a compressive load of the coil springs. Therefore, even when the holder is given with a small thickness, warping or deflecting of the holder can be avoided, and material having a small coefficient of thermal expansion such as ceramic material can be used for the holder.
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Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 54286/1987 (Laid-open No. 161366/1988) (NHK Spring Co., Ltd.), Oct. 21, 1988.
Levy Alma P.
MacPherson Kwok & Chen & Heid LLP
Nguyen Vinh P
NHK Spring Co., Ltd
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