Plate tumbler-type cylinder lock mechanism

Details Plate tumbler-type cylinder lock mechanism Plate tumbler-type cylinder lock mechanism

1981-08-03

1983-08-02

Wolfe, Robert L.

Locks

Operating mechanism

Key

70373, E05B 904, E05B 2904

Patent

active

043958931

ABSTRACT:
An improvement in a plate tumbler-type cylinder lock mechanism including an elongate barrel having a longitudinal bore therein, and a key plug having a body portion and a shaft portion extending therefrom, such plug being received rotatably in the bore with the body portion extending between opposite ends of the barrel and the shaft portion extending outwardly from one end of the barrel, the bore having a draft-induced longitudinal taper widening in the direction of the said one end of the barrel, such improvement including journal means on the body portion and projecting laterally therefrom for journalling the plug in the barrel adjacent to the said one end thereof, thereby to minimize lateral play between the plug and the barrel thereat. Preferred structure for limiting the rotation of the plug embodies stop means for interengaging the journal means and the barrel.

REFERENCES:
patent: 2282698 (1942-05-01), Biemer
patent: 3418833 (1968-12-01), Kerr
patent: 3705508 (1972-12-01), Fritsch

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