Lock portion with piezo-electric actuator and anti-tamper circuit
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United States of America Patent
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-
Nov 1, 2011
Grant Date -
Jul 2, 2009
app pub date -
Dec 27, 2007
filing date -
Dec 27, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic lock includes a rotatable core movable within an outer body. The rotatable core includes a piezo-electric actuator configured to move a tumbler blocking member into or out of interfering engagement with one or more tumblers. Tamper circuitry coupled with the piezo-electric actuator is configured to resist an externally induced acceleration of the electronic lock by shunting electrical power produced by an externally induced motion of the piezo-electric actuator back to the piezo-electric actuator.
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