Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Wheels
Patent
1980-09-08
1982-04-06
Troutman, Doris L.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Wheels
A47B 9100
Patent
active
043228690
ABSTRACT:
A freely rotatable wheel assembly including a one-piece freely-rotatable annular rim having a central opening therethrough. The rim is of a hard low-friction material and has an inner surface which surrounds the opening for defining an outer bearing race. A bearing positioned within the central opening creates a low-friction rolling engagement between the rim and a shaft which is coaxially positionable in the opening. The bearing includes cylindrical rollers constructed of hard low-friction nonmetallic material. The rollers are uniformly angularly spaced around the rotational axis so that the roller axes define a circular locus about the rotational axis. The rollers are individually disposed in direct rolling engagement with the outer bearing race and with an inner bearing race defined by the shaft. A pair of annular retainers are disposed concentrically with the central opening adjacent the opposite ends thereof so that the rollers are disposed axially therebetween. The retainers are freely rotatable relative to both the rim and the shaft. An axle extends parallel to the rotational axis and has the opposite ends thereof freely rotatably supported on the retainers. Each axle has a respective roller freely rotatably supported thereon.
REFERENCES:
patent: 320366 (1885-06-01), Kratzer
patent: 320554 (1885-07-01), Harmon
patent: 481963 (1892-03-01), Minor
patent: 484054 (1892-03-01), Sharpneck
patent: 494767 (1893-01-01), Wagner
patent: 575245 (1897-01-01), Judkins
patent: 945981 (1910-01-01), Peet
patent: 1474600 (1923-06-01), McNutt
patent: 1780761 (1930-11-01), Naschke, Jr.
patent: 1784910 (1930-12-01), Rowntree
patent: 2291600 (1942-08-01), Atkinson
patent: 2437907 (1948-03-01), Casper
patent: 3806213 (1974-04-01), Nagai
patent: 3895844 (1975-07-01), Merbler
patent: 4054335 (1977-10-01), Timmer
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