Anti-friction pad for ball and socket couplings

Joints and connections – Articulated members – Pivoted

Patent

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Details

280511, F16C 1106

Patent

active

043056768

ABSTRACT:
A bore extends radially inward from the top side of the ball component of a ball and socket trailer hitch coupling and removably receives the stem projecting from the underside of a thin pad of plastic material having a low coefficient of friction, whereby when the socket component is coupled to the ball the pad is interposed between their confronting surfaces. The pad may be formed as a hollow segment of a sphere approximately matching the radius of the ball, or it may be flat but sufficiently flexible to be bent to conform to the spherical surface of the ball when the ball and socket components are coupled together.

REFERENCES:
patent: 1889297 (1932-11-01), Russell
patent: 2727768 (1955-12-01), Latzen
patent: 2854829 (1958-10-01), Porter
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patent: 3094376 (1963-06-01), Thomas
patent: 3216753 (1965-11-01), Oishei
patent: 3679234 (1972-07-01), Colliau
patent: 3731957 (1973-05-01), Uchida
patent: 3968981 (1976-07-01), Saurez
patent: 4060331 (1977-11-01), Domer
patent: 4203683 (1980-05-01), Rogers

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