Patent ID: 6539754
Filing Date: 2003-04-01
Classification: E05B,Y10S,Y10T

Abstract:
In a lock having a body with a core received therein and provided with a keyhole and a latch connected to the body, wherein the improvements comprise:a first steel plate having a first through hole defined to correspond to the core of the body, and holes adapted to be defined to correspond to rivets of the body, a circular cap movably received in the first through hole and having a slit defined to correspond to the keyhole of the core; a second steel plate securely attached to the first steel plate and having a second through hole corresponding to the first through hole and bores corresponding to the holes of the first steel plate; a protection cap securely attached to a bottom of the second steel plate and a distal edge of the protection cap adapted to securely connect to an outer face of the body, the protection cap having an opening defined to correspond to the second through hole, whereby a structure of the lock is reinforced by the first, second steel plates and the protection cap.