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US 2013/0055774 A1Published application
Combination lock with retracing combination
OwnerYao Kun YANGinventor
Life of this patent
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Abstract
A combination lock with retracing combination includes a body, a shackle, a stick, a pivot set, a core, a plurality of sleeves and a plurality of code discs. When users rotate the core with a calibration key and rotate the code discs until the code discs is positioned, the combination digits of the code discs exposed out of the body is the correct combination digits. Therefore, if the users forget the correct combination digits, the users can retrace the correct combination digits via the calibration key inserted into the core.
Claims8
A combination lock with retracing combination comprising:
- a body, a shackle, a stick, a pivot set, a core, a plurality of sleeves and a plurality of code discs, the stick, the pivot set and the sleeves mounted in the body, the sleeves encircled by the code discs, the code discs partially exposed out of the body, a first hole opened through the sleeve and the sleeve encircling the stick via the first hole, a plurality of block portions and a plurality of groove portions formed on the stick, the block portions and the groove portions interlaced with each other, the cross-section of the groove portion smaller than the cross-section of the block portion, the periphery of the block portion formed as polygon and the shape of the first hole corresponding to the periphery of the block portion, a first end of the shackle connected to one end of the stick and a second end of the shackle inserted into the body, the pivot set having a plurality of claspers at one side and another side of the pivot set abutted against the core, the sleeve having a second groove corresponding to the clasper;
- when a user rotates the core with a calibration key, the pivot set is pushed by the block rib of the core so as to pivot the pivot unit, thereafter, the claspers press on the periphery of the sleeve;
- under this arrangement, the user rotates the code discs until the second groove engages with the clasper firmly, at this time, the combination digits of the code discs exposed out of the body is the correct combination digits and the periphery of the first hole is matching the shape of the block portion, so that the block portion is inserted into the first hole;
- consequently the stick is moving relative to the code discs so that the user pulls the shackle out of the body for separating the second end from the body and unlocking;
- thereby if the user forget the correct combination digits, the user can retrace the correct combination digit via the calibration key inserted into the core.
2 more elements
Dependencies are inferred from the claim text.