Supports – Supporting base – Rotatable
Patent
1990-11-26
1992-09-22
Foss, J. Franklin
Supports
Supporting base
Rotatable
108 20, 108139, 248186, A47B 9100
Patent
active
051490439
ABSTRACT:
A turntable device for audio and/or video units, floodlights, flower pots, showpieces, etc. In particular, the invention relates to a turntable device preferably having a circular base plate placed upon a base, with a circular bearing race extending on the top side of the base plate near its outer periphery. A concentric bearing ring is placed on the bearing race, for example in the form of a ball bearing ring, with a turntable having a circular bearing race extending on its underside near the outer periphery of the turntable. The turntable is concentric with the base plate to allow the turntable to turn about a common center axis. In accordance with a preferred embodiment of the invention the turntable device is also provided with a second bearing arrangement which is coaxially disposed relative to the center axis and near to the common center axis of the various parts. The resultant concentric arrangement bearings includes bearing races arranged on the base plate and on the turntable, with a bearing ring, for example, a ball bearing ring, being located between the races.
REFERENCES:
patent: 319743 (1885-06-01), Parker
patent: 3063714 (1962-11-01), Krauss
patent: 4026067 (1977-05-01), Wengel
patent: 4114541 (1978-09-01), Weddendorf
patent: 4258966 (1981-03-01), Grubb
patent: 4411395 (1983-10-01), Steffens
patent: 4635894 (1987-01-01), Sammons
patent: 4905543 (1990-03-01), Choi
patent: 4946127 (1990-08-01), Kulaga
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