| 摘要 |
PROBLEM TO BE SOLVED: To stop a general rotator or a rotating body which usually rotates by small force or to maintain stop state as strongly as eliminating a fact of having rotated at any position within 360°in circumference direction if it is not the case. SOLUTION: In a bearing having an inner ring, an outer ring and rolling elements, a piston, movable in a bearing axial direction and capable of transmitting force in a circumference direction to the bearing is provided in the bearing and a ring in which the piston is not provided is press-contacted at its top part. A ring-shape groove consisting of a side wall where a ring-shape panel and an engaging part are respectively formed is provided between the inner ring and the outer ring. A plurality of ring-shape panels which are alternatively engaged with the inner ring and the outer ring are provided at the groove. The bearing is provided with a means capable of applying pressure to an uppermost panel of the panels. COPYRIGHT: (C)2006,JPO&NCIPI
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