Door lock combination chambers

Details Door lock combination chambers Door lock combination chambers

1998-03-31

1999-12-14

Boucher, Darnell M.

Locks

Special application

For control and machine elements

70133, 70314, E05B 6506

Patent

active

060002549

ABSTRACT:
The present invention provides new pushbutton door locks, particularly pushbutton paddle locks, for use in controlling access through doors. The pushbutton door lock has a combination chamber which has a plurality of pushbuttons for entering an unlocking combination. An operator actuatable button and an outside paddle are provided to actuate an unlocking mechanism after the correct unlocking code has been entered into the combination chamber. The outside paddle has a single motion which unlatches the door latch and opens the door. An inside paddle may also be provided to unlatch and open the door without restricting access through the door. A hold open feature may also be provided on the inside of the door lock.

REFERENCES:
patent: 3115765 (1963-12-01), Fengler
patent: 3616667 (1971-11-01), McGourty
patent: 3747377 (1973-07-01), Van Deudekom
patent: 4027508 (1977-06-01), McGourty
patent: 4308732 (1982-01-01), Hau
patent: 4627250 (1986-12-01), Kim
patent: 4637237 (1987-01-01), Witkoski et al.
patent: 4640110 (1987-02-01), Fish et al.
patent: 4827743 (1989-05-01), Kim
patent: 5058404 (1991-10-01), Fish et al.

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