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US 9,228,373 B2Granted
Combination-identifiable padlock
OwnerChien-Yung Huanginventor
Life of this patent
Estimating the term…
Abstract
A combination-identifiable padlock has a shell, a combination lock cylinder, a key lock cylinder and an identification assembly. The combination lock cylinder, the key lock cylinder and the identification assembly are mounted in the shell. When the correct key is inserted, the key lock cylinder is rotatable to actuate the identification assembly and combination lock cylinder is actuated to identify the combination. Therefore, the combination is retrievable to avoid the combination lock cylinder to become unusable when the combination is forgotten.
Claims8
A combination-identifiable padlock comprising:
- a shell having a front shell and a rear shell connected to each other and having
- a first room;
- a second room;
- a third room defined between the first and second rooms;
- a partition formed between the second and third rooms;
- multiple through holes formed through the front shell and communicating with the first room;
- multiple receiving recesses formed in the rear shell and communicating with the third room, and each receiving recess corresponding to one of the through holes on the front shell;
- a rod hole formed through a top of the shell and communicating with the first room;
- a lock hole formed through the top of the shell and communicating with the second room;
- an opening formed through the rear shell and communicating with the lock hole;
- a sliding slot formed in the front shell and communicating with the second room;
- and
- a positioning hole formed through the front shell and located in the sliding slot;
- a combination lock cylinder mounted in the first room of the shell and comprising
- multiple external wheels, and each external wheel mounted through a corresponding through hole of the front shell and mounted in a corresponding receiving recess of the rear shell;
- multiple internal wheels, and each internal wheel mounted in a corresponding external wheel and having an identification hole formed through a sidewall thereof;
- a lock rod mounted through the internal wheels and having
- an outer end mounted through the rod hole of the shell and having a curved part extending into the lock hole of the shell;
- and
- a first resilient element abutting a bottom end of the lock rod;
- a key lock cylinder mounted in the second room of the shell and having
- a stop formed on an outer wall of the key lock cylinder;
- a top end being hollow, extending out of the lock hole of the shell and mounted around the curved part of the lock rod;
- and
- a notch formed transversely through the top end of the key lock cylinder;
- an identification assembly mounted in the third room of the shell and comprising
- an actuating panel having
- a first side facing the combination lock cylinder;
- a second side facing the key lock cylinder;
- and
- a protrusion formed on the second side;
- a second resilient element clamped between the actuating panel and the partition;
- and
- an inactive panel connected securely to the actuating panel and having
- multiple resilient pawls formed on a side of the inactive panel, selectively protruding into the first room of the shell and selectively engaging respectively with the identification holes of the internal wheels;
- and
- a positioning pin mounted transversely in the key lock cylinder and mounted slidably in the sliding slot;
- and
- a third resilient element mounted transversely in the key lock cylinder and pressing against the positioning pin to abut an inner wall of the shell.
36 more elements
Dependencies are inferred from the claim text.