Combination lock having a second lock mechanism

  • US RE45,429 E1
  • Filed: 02/04/2010
  • Issued: 03/24/2015
  • Est. Priority Date: 10/06/2003
  • Status: Active Grant
First Claim
Patent Images

1. A combination lock having a second lock mechanism comprising:

  • a lock body comprising at least a push-button and a lock tongue in relation with each other, the lock tongue having a locking position and a releasing position;

    a stopping member, positioned in the lock body, having a first position for constraining the lock tongue in the locking position and a second position for releasing constraint of the lock tongue;

    a first lock mechanism comprising a plurality of dials and a shifting plate installed in the lock body, the shifting plate and the dials moving correspondingly, the shifting plate having a clamping locking position for constraining the stopping member to move to remain in the first position and a unlocking position for releasing the stopping member from being constrained to the second position; and

    a second lock mechanism comprising a sleeve and a linking member installed in the lock body and in relation with each other, the sleeve having a keyhole for allowing a key to be inserted and for being rotated by the key such that the linking member is shifted and forces the stopping member to change positions.

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