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Padlock with fully integrated dual locking mechanism with reset mechanism

  • US 9,890,559 B2
  • Filed: 02/04/2016
  • Issued: 02/13/2018
  • Est. Priority Date: 03/25/2015
  • Status: Active Grant
First Claim
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1. A padlock operable in a locked mode an opened mode and a reset mode, comprising:

  • a shackle having a heel and a toe;

    a lock housing configured to store the heel of the shackle, the lock housing comprising a top portion, a middle portion and a bottom portion, wherein the heel of the shackle can be partially released from the lock housing from a first shackle position to a second shackle position;

    a spindle disposed inside the lock housing and arranged to provide a code locking mechanism, the code locking mechanism configured to operate the padlock in the locked mode and in the opened mode based on a combination code, the spindle comprising a cylindrical surface;

    a plurality of clutches rotatably mounted on the cylindrical surface of the spindle;

    a plurality of dials mounted in the middle portion of the lock housing in relationship to the clutches, each of the dials associated with a different one of the clutches to form a dial-clutch pair, the dials having a plurality of symbols to form the combination code; and

    an overriding mechanism disposed in relationship to the spindle, the overriding mechanism activatable by a key to cause the padlock to operate in the opened mode, wherein the shackle is in the first shackle position when the padlock is operated in the locked mode, and the shackle is in the second shackle position when the padlock is operated in the opened mode, wherein each of the clutches comprises an extended outer ring having thereon a plurality of clutch slots, and each of the dials comprises an extended inner ring having thereon a plurality of teeth, each clutch slot dimensioned to receive a tooth, such that the teeth of the dial are arranged to engage with said plurality of clutch slots of the associated clutch in the dial-clutch pair, so as to control rotational movement of said clutch relative to the spindle at least when the padlock is operated in the locked mode, and wherein each of the teeth has a sloping surface on both side of the tooth and each of the clutch slots also has a sloping surface on both side of the clutch slot so as to facilitate rotation of the dial relative to the associated clutch in the dial-clutch assembly when the padlock is operated in the reset mode.

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