Locks – Operating mechanism – Combination
Patent
1976-12-14
1978-01-31
Frazier, Roy D.
Locks
Operating mechanism
Combination
E05B 3702, E05B 3716
Patent
active
040708810
ABSTRACT:
Disclosed is a pushbutton operated door lock particularly featured by easy selection and changeability of a code number inputted into the door lock for its unlocking operation. The door lock includes a plurality of tumbler rings rotatably supported on a lock shaft in a casing. A lock bolt having a plurality of notches along its length is slidably supported on the lock shaft. Each of the tumbler rings is formed with a plurality of lateral bores. An engage pin is reciprocatorily movably received in each lateral bore of each tumbler ring. A plurality of pushbuttons are each connected with one of the tumbler rings to rotate them individually. Other pushbuttons are operationally associated with the tumbler rings to rotate all of them simultaneously. The tumbler rings are engageable with the notches on the lock bolt when they are rotated. A wall portion of the casing is formed therethrough with a plurality of apertures through each of which a pusher rod can be inserted to work on the engage pin in the corresponding one of the lateral bores of one of the tumbler rings for the reciprocatory movement of the engage pin.
REFERENCES:
patent: 200070 (1878-02-01), Lock
patent: 745081 (1903-11-01), Smith
patent: 1144887 (1915-06-01), Besharov
patent: 1156741 (1915-10-01), Besharov
patent: 2856765 (1958-10-01), Sreb
patent: 3379040 (1968-04-01), Shimono
Basile Andrew R.
Frazier Roy D.
Holko Thomas J.
LandOfFree
Pushbutton operated door locks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pushbutton operated door locks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pushbutton operated door locks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2071503