Pyrotechnic actuator and power cutting tool with safety reaction system having such pyrotechnic actuator
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United States of America Patent
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Sep 17, 2013
Grant Date -
Jun 20, 2013
app pub date -
Sep 27, 2010
filing date -
Sep 27, 2010
priority date (Note) -
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Abstract
A pyrotechnic actuator for a power cutting tool is disclosed. The pyrotechnic actuator comprises a housing defining a cavity therein, a piston positioned at least partially within the cavity, and an insert-molded unitary assembly positioned within the cavity. The unitary assembly comprises a piston engagement member and a base. A sealed void is defined intermediate the piston engagement member and the base. The unitary assembly comprises a breakable member extending intermediate the piston engagement member and the base and a pyrotechnic initiator positioned at least partially within the base. The pyrotechnic initiator, upon application of a current pulse thereto, is configured to generate a pressurized gas in the sealed void that exerts a force on the piston engagement member and breaks the breakable member thereby causing the piston engagement member and the piston to move relative to the base and the housing.
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