Plunger operated lock

Details Plunger operated lock Plunger operated lock

E - Fixed Constructions

05

C

70/37, 292/41

E05C 1/02 (2006.01) E05B 67/36 (2006.01)

Patent

CA 1068745

ABSTRACT OF THE DISCLOSURE A lock of the type having an internal plunger with a stem for being gripped by a tool to pull the stem axially to re- lease locking means, in which said stem has a separate portion protruding from the rear end which is spring biased against the forward portion of the stem. When attempts are made by unauthor- ized persons to open the lock by forcing an elongated member (such as a piece of tubing) into engagement with the protruding portion, the protruding portion is driven back into the forward portion, so that the tubing cannot become engaged therewith.

281479

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