Patent ID: 6991271

Claim:
A latch assembly comprising: a lock case; two assembling plates securely mounted to said lock case, each said assembling plate including a first hole and a second hole, with said first holes of said assembling plates being aligned with each other and with said second holes of said assembling holes being aligned with each other; a latch bolt received in the lock case and movable between a retracted position and an extended position; a connecting plate extending through the lock case and between said assembling plates, said connecting plate being connected to said latch bolt to move therewith; a first cam received in said first holes of said assembling plates, said first cam having a first spindle hole, and said first cam further having a stop wall that closes said first spindle hole to form a closed non-circular hole; and a second cam received in said second holes of said assembling plates, said second cam having a second spindle hole, at least one ear, and a reinforcing ring, said connecting plate including a protrusion on at least one side thereof, said at least one ear of said second cam abutting against said protrusion of said connecting plate for retracting said latch bolt, said reinforcing ring defining an additional spindle hole extending from said second spindle hole and aligned with said first holes of said assembling plates, and said reinforcing ring being connected to said ear of said second cam for reinforcement; said first cam and said second cam being connected to said connecting plate to move therewith such that pivotal movement of either one of said first cam and said second cam causes retraction of said latch bolt; said first spindle hole of said first cam and said second spindle hole of said second cam being separated by said stop wall, thereby preventing a spindle extending through one of said first spindle hole of said first cam and said second spindle hole of said second cam from entering the other of said second spindle hole of said second cam and said first spindle hole of said first cam.