| 摘要 |
<p>1,100,141. Overload release clutches. FISHOLOW PRODUCTS Ltd. 1 March, 1965 [11 March, 1964], No. 10233/64. Addition to 979,487. Heading F2C. An overload clutch comprises a star cam 24 and driving member 10 fixed to a driving pinion 11, a driven member 15 feather-keyed to hub 13 fixed to shaft 14 and biased by adjustable springs 17 toward member 10, and a carrier 22 having balls 21 in slots 23 which are wider than the diameter of the balls, the balls engaging in openings 19, 20 in members 10, 15 to transmit drive, the mouths of openings 19, 20 being frusto-conical. On overload, member 10 rotates relative to member 15 and after the initial movement of the balls out of openings 19, 20, they are engaged by the cam faces 27b to move them to the end of slots 23 clear of the cam 24. In this position, the member 15 is moved axially away from carrier 22 which can rotate relative to both members 10, 15 with the balls rolling on member 15. In the clutched position the dwells 28 of cam 24 are spaced from the balls 21. To reset the clutch after disengagement, a bar is inserted into aligned slots 29, 30 in member 10 and carrier 22 which are then rotated until balls 21 roll inward to engage in openings 19, 20.</p> |
