Patent ID: 6361090
Filing Date: 2002-03-26
Classification: E05B,E05C,Y10T

Abstract:
A lock apparatus comprising:a lock housing having a mounting wall and a surrounding wall that extends transversely from said mounting wall and that cooperates with said mounting wall to confine a receiving space, said mounting wall being formed with a circular spindle hole communicated with said receiving space; a latch actuator mounted on said lock housing, said latch actuator including an operable rotary disc and a spindle which is connected to said rotary disc and which extends rotatably into said receiving space of said lock housing via said spindle hole, said rotary disc being operable to rotate said latch actuator about an axis of said spindle between a locking position and an unlocking position, said spindle having a positioning section which has a non-circular cross-section and which is disposed in said receiving space, said positioning section having a peripheral portion formed with a flat first positioning surface and a flat second positioning surface that is angularly displaced from said first positioning surface; a latch member mounted movably on said lock housing and associated operably with said latch actuator such that said latch member projects relative to said lock housing when said latch actuator is moved to the locking position and such that said latch member is retracted into said lock housing when said latch actuator is moved to the unlocking position; and an elongated spring plate mounted in said receiving space of said lock housing and extending in a direction perpendicular to said spindle of said latch actuator, said spring plate abutting against said first positioning surface to retain said latch actuator in the locking position, and abutting against said second positioning surface to retain said latch actuator in the unlocking position.