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US 5,964,107 AGranted
Lock
OwnerKuo-Chou Changinventor
Life of this patent
Estimating the term…
Abstract
A lock includes a case having a shield, a locking member housing contained in a first chamber of the case and protected by the shield, a locking member contained in the locking member housing, a locking rod also contained in the first chamber of the case and moved by the locking member in locking and unlocking, and a deadbolt having a press portion and a rod portion with an annular groove for the end of the locking rod to engage in for locking. The locking member has a single or a double pin tumbler locking mechanism, or a disc tumbler locking mechanism.
Claims13
A lock comprising:
- a case having first and second chambers containing other components of said lock, the case having a slot therethrough configured to accept an item to be locked by the lock;
- a generally U-shaped metal shield located within the case adjacent to the slot therethrough to strengthen the case in the area of the slot;
- a locking member housing fitted in said first chamber of said case to protect components contained within said locking member housing;
- a locking member positioned in said locking member housing, the locking member being movable between a locked position and an unlocked position;
- a locking rod connected to an inner end of said locking member so as to move therewith so as to lock or unlock said lock by rotating said locking member;
- and,
- a deadbolt movably mounted in said second chamber of said case, having an inner end movable into said first chamber to be engaged with or disengaged from said locking rod.
4 more elements
The lock is claimed in clam 10, wherein said key comprises:
- a grip;
- a key body combined with and extending from one end of said grip, the key body formed with a plurality of grooves on an upper side the grooves having sloped sides;
- a tooth plate movably located on said key body and having a plurality of sloped projections on a lower side engaged with said plurality of grooves on said key body and having a plurality of teeth formed on an upper side for pushing said pins;
- and
- a spring located to have one end resting on said grip and the other end resting on said tooth plate so that said spring pushes against said tooth plate;
- whereby when
- said key is inserted in said key hole, said tooth plate contacts said stopper to compress said spring, causing said tooth plate to move to said grip and up along the sloped sides of said grooves of said key body so that said teeth of said tooth plate push said pins in said pin hole into said outer cylinder thereby permitting said inner cylinder to move relative to said outer cylinder to change a locked position into an unlocked position.
4 more elements
Dependencies are inferred from the claim text.