| 摘要 |
The support device of the present invention comprises a stationary outer collar and a rotatable inner collar concentrically located within the outer collar. An outwardly extending flange is attached to the outer surface of the inner collar and an inwardly extending flange is attached to the inner surface of the outer collar. These two flanges are superimposed over one another and a plurality of ball bearings are interposed between them so as to permit the inner collar to rotate with respect to the outer collar. The mixer auger is attached to the inner collar and consequently the auger can be rotated about the rotational connection between the inner and outer collars.
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