Closure fasteners – Knob-attaching devices – Screw
Patent
1975-10-20
1977-04-26
Moore, Richard E.
Closure fasteners
Knob-attaching devices
Screw
E05C 1900
Patent
active
040197662
ABSTRACT:
A two-element setting member for securing a doorknob to the operating shaft of a doorlock assembly is provided. The setting member comprises a threaded member and a grooved engaging member rotatably mounted on the threaded member. The setting member is threadedly received in a tapped hole located in the doorknob and communicating with the shaft onto which the doorknob is threaded. The engaging member has a forward face which is grooved for engaging with either a flat side surface of the shaft or a corner of the shaft at a number of different angular positions.
REFERENCES:
patent: 15367 (1856-07-01), Bliss
patent: 251988 (1882-01-01), Young
patent: 251988 (1882-01-01), Young
patent: 361323 (1887-04-01), Rochow
patent: 1310213 (1919-07-01), Rixson
patent: 2711167 (1955-06-01), Rickard
patent: 3052462 (1962-09-01), Butler
patent: 3403901 (1968-10-01), Servadio
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