Ilco Unican Corporation

Paul Raybary

The present invention provides new door lock combination chambers for use with door locks, particularly pushbutton door locks. The combination chamber includes rotary keys which are actuated by pressing pushbuttons when entering an unlocking code into the combination chamber. The rotary keys rotate and engage idler gears which are engaged with a timing gear and code gears. The code gears have pockets which become aligned with an unlocking slide when the proper unlocking combination is entered into the combination chamber. The unlocking slide can be slide into the pockets on the code gears, and thus allow a corresponding locking mechanism retract a latch bolt in a door.

Door lock combination chambers

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.

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Winston Salem, NC, United States of America

Paul Raybary