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Vehicle locking and/or parking brake

  • US 9,644,694 B2
  • Filed: 05/08/2013
  • Issued: 05/09/2017
  • Est. Priority Date: 05/09/2012
  • Status: Active Grant
First Claim
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1. A wheel locking or parking brake assembly for a vehicle, comprising:

  • a plate member configured to be affixed to a wheel or an axle of the vehicle, the plate member having a circumferential flange with a peripheral extension or protrusion;

    an electrically powered pin assembly comprising a weatherproof housing having an electric motor disposed therein, the electric motor configured to operate a rack and pinion assembly, where a rack is configured to be driven by a pinion gear on the electric motor thereby retracting or advancing a locking pin;

    where the electric motor is affixed to a first portion of the weatherproof housing and the rack is affixed to a second portion of the weatherproof housing such that when the weatherproof housing is opened, the electric motor and the pinion gear are disengaged from the rack thereby comprising a safety override mechanism where the locking pin is configured to be manually retracted or advanced; and

    where the locking pin is configured to engage the peripheral extension or protrusion; and

    an electric power supply;

    where electric current flowing in a first direction causes the locking pin to advance in the path of the extension or protrusion to lock the wheel from rotating, and where current flowing in a second and opposite direction causes the locking pin to retract from the path of the extension or protrusion to allow the wheel to rotate; and

    where the locking pin remains in either an advanced or retracted position depending on whether the electric power supply is switched off.

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