Electrical clutch engagement/disengagement apparatus

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum

Reexamination Certificate

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Details

C254S361000

Reexamination Certificate

active

07984894

ABSTRACT:
A clutch operable with equipment, including a winch of the type having a planetary gear reduction assembly for driving a cable drum. The planetary gear assembly includes a ring gear which, when allowed to rotate, effectively disconnects the drive motor from the cable drum. When the ring gear is fixed against rotation, the drive motor can drive the cable drum to wind or unwind the cable therefrom. A bistable solenoid is employed so that a plunger thereof is engageable with the ring gear to either allow rotation or prevent rotation, and thus engage or disengage the clutch. The bistable solenoid does not require electrical power when the plunger is in either stable position, thereby conserving electrical energy.

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