Patent ID: 7151235
Filing Date: 2006-12-19
Classification: H01H

Abstract:
1. A motion sensor comprising: a cap of an electrically insulative material, an electrically conductive coil spring having a first end mounted on said cap and a second end spaced from said first end, an electrically conductive connector electrically connected to said spring and extending through said sap, and a can having an electrically conductive inner surface surrounding said spring and spaced therefrom, said inner surface forming an interior cavity, said can having an open first end size to receive said cap and a second end spaced opposite said first end, whereby said spring flexes and said second end of said spring contacts said inner surface to electrically connect said can to said connector when said can is accelerated, said cap having a base portion with said first end of said spring being mounted on said base portion, and said cap having a circumferential wall portion extending a selected height from said base portion into said interior cavity, between said spring and said inner surface of said can, said height being selected such that said second end of said spring contacts said inner surface at a selected acceleration rate.