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Dual-Position Electromagnetic Clutch Disclosure Number: IPCOM000040175D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02

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Related People

Abbott, PE Gunnell, RW Stahlberg, EG [+details]


A low-cost, reliable electromagnetic clutch is described which affords two positions, but does not require logical feedback to determine the orientation of the clutch. Fig. 1 shows an exploded view of clutch 10 which consists of input drive member 11 and output shaft member 12 which, in combination, act as a spring arbor. Members 11 and 12 are joined by clutch spring 13, one end of which is anchored in output member 12 and the other end is anchored in collar member 14. Collar member 14 rides on the shoulder (Image Omitted) of input drive member 11 and is large enough so that it fits freely over spring 13 and bias spring 15. Bias spring 15 serves to push member 14 away from member 12 and holds member 14 lightly against input member 11 when the clutch is deactivated.