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IMPACT RESPONSIVE SWITCH WITH FRANGIBLE ELEMENT HOLDING CONTACT PLUNGER IN UNACTIVATED POSITION

  • US 3,794,794 A
  • Filed: 11/10/1972
  • Issued: 02/26/1974
  • Est. Priority Date: 11/10/1972
  • Status: Expired due to Term
First Claim
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1. An impact responsive switch comprising a cylindrical housing, electrically conductive contact means longitudinally axially spaced within the housing, the axially spaced contact means comprising a pair of rings having radially inwardly projecting contact fingers, plunger means slidably journalled at one end of the housing for longitudinal displacement movement therein, the plunger means comprising an anvil the inner end of which projects into the housing, a nonconductive connector member carried on the anvil inner end, and electrically conductive contact member coupled to the connector member, the electrically conductive contact member being of sufficient length to bridge the axially spaced contact means upon impact induced axial displacement of the plunger means into the cylindrical housing, and shear pin means holding the plunger means against displacement movement below a predetermined impact force.

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