Patent ID: 7922223

Claim:
A lock comprising: a housing, the housing including an indent with two arc-shaped guide portions projecting downwardly therefrom, the guide portions being formed separately from each other at two positions directly joining an open edge of the indent of the housing, and each of the guide portions having a concave-shaped inner face and a convex-shaped outer face; a cam including an axle port, the axle port having an axle port outer wall, and the cam being positioned within the indent; an axle with a shaft adapted to be inserted into the axle port so that the cam and the axle are rotatable together; the cam including a sweep arm and a channel disposed on an upper surface of the sweep arm, the channel having one side bounded by the axle port outer wall, and an opposite side bounded by an elongated-arcuate portion of an inner wall of the sweep arm which faces the axle port outer wall, and the sweep arm having an outer wall that is curved, whereby upon rotation of the axle, the cam rotates about the guide portions into a locked posture in the housing.