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US 2004/0103700 A1Published application
Combination lock
AssigneeSinox Co., Ltd
InventorRenny Tse-Haw Ling
Life of this patent
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Abstract
A combination lock consists of a lock housing, a shackle, a lock shaft, an elastic element, a dial and a plurality of retaining rings. The dial is the only element for performing the locking and unlocking function, and forms rotational chain movements with the retaining rings such that the retaining rings may be driven by the dial to move the lock shaft to generate an interference or release movement, thereby indirectly determine whether the shackle may be moved relative to the lock housing from a locked position to an unlocked position.
Claims15
A combination lock comprising:
- a lock housing having a housing chamber;
- a shackle connecting to the lock housing and being movable relative to the lock housing to an unlocked position and a locked position;
- a lock shaft located in the housing chamber being movable relative to the lock housing to a first position to constrain the shackle at the locked position and to a second position to release the shackle from the constraint of movement;
- an elastic element located in the housing chamber to exert an elastic force on the lock shaft to keep the lock shaft at the first position in normal conditions;
- a dial connecting to the lock housing in a turnable manner;
- and
- at least one retaining ring located in the housing chamber to receive driving of the dial to move to an interference position to stop the lock shaft from moving to the second position and to move to a release position to allow the lock shaft moving to the second position.
4 more elements
Dependencies are inferred from the claim text.