Push-button combination lock for vehicles

Details Push-button combination lock for vehicles Push-button combination lock for vehicles

E - Fixed Constructions

05

B

292/6

E05B 65/16 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1065916

PUSH-BUTTON COMBINATION LOCK FOR VEHICLES ABSTRACT A push-button keyboard is located on the dashboard of a truck for unlocking a rear access door to rear cargo space in the truck. Selected ones of the keys are sequen- tially operated in accord with a given combination generating a signal which throws a lock bolt as by means of a solenoid. A first timer prevents operation of the lock unless the combination keys are operated within a first given time interval. A second timer automatically releases the solenoid operated lock bolt after a second given interval of time has elapsed to relock the access door in the event it has not been opened. The signal to the solenoid operated bolt itself is frequency coded to inhibit introduction of un- authorized signals in an unauthorized attempt to operate the lock.

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