| 摘要 |
An insulating support plate has an aperture therethrough for receiving an electrical contact pin reciprocally movable in the aperture. One end of the aperture is threaded. A coil spring around the pin has the coils at one end formed to match the threads of the aperture and are threaded into the aperture. The remainder of the spring has a larger pitch for resilience and the other end frictionally engages the pin and abuts against a shoulder on the pin so that the pin is secured to the support by the spring and is resiliently movable relative to the support.
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