Failsafe hardware brake mechanism for outdoor power equipment
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United States of America Patent
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Apr 28, 2020
Grant Date -
May 4, 2017
app pub date -
Jun 23, 2014
filing date -
Jun 23, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus (100) may include a working assembly (220) configured to perform a work function responsive to operation of the working assembly, an electric motor (230) that powers the working assembly, a power source (210) configured to selectively power the electric motor, a control circuitry (240) for controlling operation of the electric motor, and a brake function (270) configured to selectively apply braking to the electric motor responsive to a brake initiation event. The brake function may be configured to apply the braking by short-circuiting motor phase windings of the electric motor without requiring an external power supply during application of the braking.
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