Asahi Kasei Kogyo Kabushiki Kaisha

Kunio Sakai

Kohei Nonaka

Masayoshi Fukushima

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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Sakai, Japan

Kunio Sakai