Security locks

Abstract

A lock comprises a male element, and a female element for receiving the male element enabling aligned copular engagement. The male element has a shoulder and the female element a catch for closing behind the shoulder to hold the male element therein. The catch and a lock casing are held in the female element with the axis of the lock casing inclined, normally at a right angle, to the line of engagement of the male and female elements. The lock casing and the female element have juxtaposed faces inclined to the line of engagement of the male and female elements. At least one face on the lock casing extends from the casing outwardly from the line of engagement contiguous with an inwardly facing complementary face on the female element. In this way longitudinal forces generated by attempted separation of the engaged male and female elements are resolved by the faces into a lateral force on the female element.

Dependencies are inferred from the claim text.