Brushing – scrubbing – and general cleaning
Patent
1977-11-14
1979-02-06
Staab, Lawrence J.
Brushing, scrubbing, and general cleaning
151 6, 151 11, F16B 3900
Patent
active
041379594
ABSTRACT:
A self-locking knob and stud assembly includes a self-locking knob consisting of an internally threaded knob with an apertured spring retainer clip slidably received in a transverse slot provided in the knob, the aperture through the retainer clip being operative to effect a locking action of the knob relative to a stud on which the knob is threaded when rotated in one direction. The stud which is of special configuration has a reduced diameter Z-shaped free end shank portion that extends axially outward for the externally threaded portion of the stud. The aperture through the retainer clip is defined by a semi-circular rim edge at one end thereof to define an opening of a diameter so as to slidably and rotatably receive the Z-shaped free end shank portion of the stud and the aperture is defined at its other end by an edge means including a cam tab means positioned to normally be in the path of the Z-shaped shank portion during rotation of the knob relative thereto, the retainer clip further including a return bent spring portion abutting against the exterior of the knob to normally bias the retainer clip in a direction whereby the cam tab edge means is positioned to be in interference relationship with the Z-shaped free end shank portion of the stud upon rotation of the knob relative thereto.
REFERENCES:
patent: 613035 (1898-10-01), Hannaford
patent: 864706 (1907-08-01), Smith
patent: 1070125 (1913-08-01), Faith
patent: 1070844 (1913-08-01), Roe
patent: 2074084 (1937-03-01), Ellestad
patent: 2398827 (1946-04-01), Graham et al.
patent: 3464474 (1969-09-01), Jansen
General Motors Corporation
Krein Arthur N.
Staab Lawrence J.
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