| 摘要 |
The present invention relates generally to clutch controlled drive mechanisms and particularly to a novel, self-contained drive mechanism or unit wherein power transmitted from the input shaft means to the output shaft means is governed through the agency of clutch means. The embodiment of the invention disclosed herein contemplates a self-contained unit comprising a housing, input shaft means and output shaft means rotatably supported in said housing, clutch means in said housing for locking said input and said output shaft means against rotation with respect to the housing, and cam means operable as an incident to a limited degree of relative rotative movement experienced by the input and output shaft means for overcoming the locking effectiveness of the clutch means.
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