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Winch with power train, manual operation option, and particular brake assembly

  • US 5,374,035 A
  • Filed: 06/03/1993
  • Issued: 12/20/1994
  • Est. Priority Date: 06/03/1993
  • Status: Expired due to Fees
First Claim
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1. A winch comprising:

  • a drum rotatable about a first axis adapted to be connected by a cable to a load;

    a reversible electric motor having an output shaft;

    a brake hub;

    a one-way bearing mounted on said output shaft between said brake hub and said output shaft;

    means for power rotating said drum mounted on a drum shaft about said first axis either clockwise or counter clockwise in response to power supplied from said motor, including an electrical switch for connecting said motor to a source of electrical power, said switch including an actuator and having off, forward, and reverse positions corresponding to an off condition, and forward and reverse rotation directions, respectively, of said output shaft;

    braking means for braking said motor output shaft to prevent movement thereof at least in said reverse direction when said switch is in said off position, said braking means comprising a brake arm with a brake lining engageable with said brake hub of said one way bearing assembly on said output shaft which, when braked by said brake arm and lining, allows forward rotation of said output shaft but not reverse rotation thereof; and

    means for mechanically deactivating said braking means when said switch is in said reverse position, said means comprising an extension of said switch actuator.

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