Push and pull type cylinder lock

Details Push and pull type cylinder lock Push and pull type cylinder lock

1990-09-24

1992-10-27

Grosz, Alexander

Locks

Special application

For control and machine elements

70216, 292170, E05C 112

Patent

active

051579537

ABSTRACT:
A cylinder lock includes an outer handle formed on an outside of a door having a tumbler lock formed in the outer handle, an inner handle formed on an inside of the door having an inner rotating knob formed in the inner handle, an actuator laterally formed in a central portion of the two handles for operatively pulling a latch bolt inwardly for opening the door from a door frame, an outer slide slidably mounted in the two handles which can be pushed inwardly upon a depression on the outer handle from outside the door to retract the actuator and the latch bolt for opening the door when the door is unlocked, and an inner slide slidably held in the two handles which can be pulled inwardly to retract the actuator and the latch bolt also for opening the door from inside the door.

REFERENCES:
patent: 2547108 (1951-04-01), Anderson
patent: 2589405 (1952-03-01), Lang
patent: 2708357 (1955-05-01), Ahlquist
patent: 2939737 (1960-06-01), Nygren
patent: 2960858 (1960-11-01), Webster
patent: 3121319 (1964-02-01), Webster
patent: 3172281 (1965-03-01), Tugle
patent: 3385622 (1968-05-01), Winger
patent: 3582121 (1971-06-01), Rollins
patent: 4040652 (1977-08-01), Arfelt et al.
patent: 4777810 (1988-10-01), Webster

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