Structure of combined lock device
OwnerJack Lieninventor
Life of this patent
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Abstract
A combined lock device comprised of a key lock linked up with at least one combination lock. The key lock can be unlocked by a key only when the combination lock is unlocked. A division plate is mounted on the lock device to alternatively conceal the key lock and the at least one combination lock, so as to prohibit the key lock and the at least one combination lock from being simultaneously exposed to thieves' eyes. The lock bolt which is driven by the key to fasten a door, strongbox, etc. has a notch on the slope of the front end thereof to protect against insertion of a pry.
Claims3
A combined lock device comprising a lock body having fastened therein a combined cylinder unit, a bottom cap attached to said lock body at a bottom, a top cap attached to said lock body at a top to secure a movable division plate covering over said combined cylinder unit, said combined cylinder unit comprised of a key lock cooperating with at least one combination lock, said division plate having a hole thereon, wherein said division plate is moved to carry the hole thereon to be alternatively aligned with said key lock and said at least one combination lock, permitting said key lock to be controlled by a key to drive a lock bolt to move from a locking position to an unlocking position or from said unlocking position to said locking position after said at least one combination lock has been opened.
Dependencies are inferred from the claim text.