Doorknob

Details Doorknob Doorknob

1982-03-25

1984-03-13

Wolfe, Robert L.

Locks

Special application

For control and machine elements

70216, E05B 6310

Patent

active

044359675

ABSTRACT:
A doorknob has a large end face opening in which a face plate is fixedly but rotatably mounted. The face plate contains within itself a figure-8 or other non-circular opening for the reception of a removable key-operated core having a key plug housing and a radially extending pin tumbler flange or lobe. Te knob interior is formed with radially inward-extending portions which define diametrically opposite notches or grooves in which the pin tumbler flange or lobe of the core is optionally engageable as a spline to key the core and face plate to the knob in either of two opposite orientation to suit installations of the knob and its lock set in doors of different hand.

REFERENCES:
patent: 2082351 (1937-06-01), Moore
patent: 2547439 (1951-04-01), Cerf
patent: 2677953 (1954-05-01), Fisher
patent: 2713257 (1955-07-01), McConnell
patent: 3955387 (1976-05-01), Best et al.
Ser. No. 136,746, filed 4/2/80 by Best et al.
Ser. No. 163,472 filed 6/27/80 by Foshee.
Ser. No. 270,825 filed 6/5/81 by Best et al.

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