| 摘要 |
A wrench device has a bearing-type clutch for providing a unidirectional rotational force and an opposite unidirectional independent rotation. The wrench device includes a set of larger and smaller bearings disposed in an irregular space with larger and smaller tapering sections between a primary wall of a primary body and a secondary wall of a secondary body. The space has tapering or narrowing sections in which the bearings bind to fixedly engage the primary and secondary bodies as the primary body rotates in a first rotational direction. A pin or toggle dislodges the bearings so that the primary body may rotate freely in a second, opposing rotational direction while another bearing binds the secondary body to the primary body when the primary body is rotated in the first rotational direction. Alternatively, the bearings are selectively positioned in the space to cause the primary and secondary to rotate together or independently depending on the positioning of the bearing and the rotational direction of the primary body. The bearings may be non-circular, and have protrusions pivoting in indentations in either the primary or secondary walls.
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