| 摘要 |
1,152,824. Friction clutches. E. W. BLISS CO. 27 Sept., 1966 [9 Nov., 1965], No. 43101/66. Heading F2C. In a coiled spring clutch the spring 25 normally engages drums 13, 22 at the ends of the driving and driven shafts 10, 19 and its free ends 26, 27 are bent up to engage slots in discs or toothed wheels 30, 31 encircling the spring and arranged to be rotated in opposite directions to expand the spring for clutch disengagement. As shown, toothed wheels are operated by projections 44, 45 on the arms of a yoke member 41 which is normally held retracted against a spring 46 by a solenoid 40. When the latter is de-energized the yoke 41 is raised by the spring 46, the engagement of the projections 44, 45 with the teeth on wheels 30, 31 rotating the latter to release spring 25. |
