Cabinet lock with frangible cover plate and push button lock release and alternative key release

Abstract

A cabinet lock which includes a housing having a latch mounted in the housing for pivotal movement into and out of the housing together with a push plate slidably mounted in the housing for releasing the lock. The latch has a slot formed therein and a first spring urges the push plate away from the latch whereby a lug on the push plate engages the slot of the latch which prevents the latch from pivoting from a position extending outwardly of the lock. A second spring connected to the latch and the housing urges the latch inwardly of the housing when the lug of the push plate is removed from the slot of the latch as the push plate is pushed inwardly of the housing against the action of the first spring. The housing carries a frangible plate covering the push plate which may be broken whereby the push plate may be pushed. The latch is pivotally secured in a position extending outwardly of the housing when the push plate is released and is urged away from the latch thereby engaging the lug of the push plate into the slot of the latch. The push plate may also be pushed by means of a key insertable into the housing under the frangible plate.

Dependencies are inferred from the claim text.