Combination padlock with dual locking and advanced anti-pick mechanism
AssigneeThe Sun Lock Company Ltd.
InventorKarl Lai
Life of this patent
Estimating the term…
Abstract
A padlock is provided that can be locked and unlocked using a combination mechanism or a key mechanism. A padlock includes clutches that will not be turned during the lock mode or the open mode. A lock body has more than one slot to engage an extended fin of the clutch in the lock mode. An opening slot and faulty notches are located in each of the dials. In the lock mode, the turning of the dials will have no effect on the clutches. Each extended fin of the clutch is engaged in a slot of the lock body in the lock mode. The faulty notches on the dials are clearer and an intruder cannot feel the correct opening slot by turning dials to pick the combination.
Claims9
A padlock having a combination locking mechanism and a key locking mechanism, and comprising:
- i) a lock body;
- ii) a cable connected to a combination side cable end and a key side cable end;
- iii) a spindle to control the locking and unlocking of the combination locking mechanism independent of the key locking mechanism;
- iv) more than one clutch mounted on the spindle which control the vertical movement of the spindle;
- v) more than one dial mounted in the lock body, each having an opening slot and faulty notches;
- vi) a bolt in contact with the combination side cable end, wherein movement of the bolt is controlled by movement of the spindle;
- vii) a cam comprising a slot;
- and
- viii) a cylinder comprising a fork to contact the slot of the cam such that the rotational movement of the cylinder transfers to the cam;
- wherein the spindle further comprises:
- a top portion which contacts a neck of the bolt;
- a threaded end to receive a threaded end of a reset button;
- and
- a hole to receive a bail to hold the spindle and reset button together to allow the reset button to unwind partially out of the lock body and to allow the user to pull a knob area of the reset button away from the spindle during a combination reset mode.
Dependencies are inferred from the claim text.