Shock sensor
First Claim
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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Accused Products
Abstract
A liquid passageway is formed in a vessel and is filled with liquid, which flows in response to a shock or an acceleration applied to the vessel, and signal detection means produces an electrical signal in accordance with the velocity of the liquid flow. Threshold presetting means is disposed within the liquid passageway on one side of the signal detection means, and permits a passageway of the liquid therethrough only for a liquid pressure which exceeds a given value. A check valve is disposed within the liquid passageway on the opposite side of the signal detection means with respect to the threshold presetting means. The check valve permits a flow of the liquid toward the threshold presetting means, but blocks a movement of the liquid in the opposite direction. That amount of the liquid which has moved past the threshold presetting means is returned to the liquid passageway by passing it through a return path so as to flow through the check valve in a forward direction. A signal is produced by the signal detection means only when the vessel is subjected to a shock in excess of a given value.
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Citations
14 Claims
- 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.
Specification