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Shock sensor

  • US 3,940,999 A
  • Filed: 04/07/1975
  • Issued: 03/02/1976
  • Est. Priority Date: 04/08/1974
  • Status: Expired due to Term
First Claim
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1. A shock sensor comprising a liquid passageway formed in a vessel and containing a body of liquid, signal detection means responsive to the velocity of liquid flow for providing a signal, threshold presetting means disposed in the liquid passageway on one side of the signal detection means for permitting the liquid to pass therethrough only when the energy of the liquid tending to move exceeds a given value, a check valve disposed in the liquid passageway on the opposite side of the signal detection means from threshold presetting means for permitting a movement of the liquid in a direction from the signal detection means toward the threshold presetting means while substantially completely preventing a movement thereof in the opposite direction, and a return path for allowing that portion of the liquid which has moved past the threshold presetting means to pass through the check valve in a forward direction.

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