F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
192/26
F16D 43/18 (2006.01)
Patent
CA 1051363
ABSTRACT OF THE DISCLOSURE A centrifugal clutch construction having an outer driven member with an axially extending coupling surface, and an inner driving rotor assembly. The rotor assembly has a pair of spaced radial side plates mounted in fixed positions on a driv- ing shaft, and a pair of hubs fixed on the shaft between the side plates. The hubs have a plurality of radially extending projec- tions which form slots between each pair of axially aligned pro- jections. The projections have surfaces engaging and supporting associated pairs of clutch shoes when the shoes are in retracted position. A detent plate is fixed between each pair of clutch shoes for movement with the shoes, and has a projecting surface which extends below the clutch shoes and into a respective slot between the hub projections when the shoes are in retracted pos- ition. Spring biased detent cups are located within holes formed in the hub projections and project into axially aligned holes formed in the projecting surfaces of the detent plates. The de- tent cups together with a garter spring which extends circumfer- entially around and engages the detent plates, retain the clutch shoes in retracted position. A plurality of weights are located between adjacent pairs of the clutch shoes and engage the clutch shoes when moving outward under the influence of centrifugal force to assist in overcoming the retaining force exerted by the spring biased cups on the detent plates when the shaft reaches a predetermined speed. The retaining cups and detent plates have complementary bevelled slidable engageable conical surfaces which become disengaged upon a predetermined shaft speed being reached, whereupon the clutch shoes snap into engagement with the outer driven member. The complementary bevelled conical surfaces enable the engagement speed to be more accurately determined and assist in distributing the clamping stresses over a broader con- tact area.
266906
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