Trigger device
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United States of America Patent
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-
Oct 24, 1995
Grant Date -
N/A
app pub date -
Jun 30, 1994
filing date -
Jul 5, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trigger device is provided with a firing pin made of a non-magnetic material and arranged movably toward a detonator, an inertia body formed of a permanent magnet and arranged movably toward the detonator, and a cylindrical permanent magnet having an inner diameter greater than an outer diameter of the inertia body. The firing pin extends freely through the inertia body. When an acceleration acting on the inertia body exceeds repulsion between the inertia body and the cylindrical permanent magnet, the inertia body is caused to move toward the detonator through a cavity of the cylindrical permanent magnet so that the firing pin strikes and fires the detonator. An attracting disk made of a magnetic material is arranged in close contact with a detonator-side magnetic pole surface of the cylindrical permanent magnet so that attraction for the inertia body is increased.
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