Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1987-11-18
1989-08-08
Diehl, Dwight G.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74752F, 74785, F16H 370, F16H 5710
Patent
active
048541923
ABSTRACT:
A centrifugally controlled two-speed accessory drive for operation of one or more automotive vehicle accessories to provide a two-stage operation depending on the engine speed, the drive including a gear box secured to the face of the accessory and having an input shaft driven by a pulley and belt from the engine, an output shaft driving the accessory, and a planetary gear set connecting the shafts. The gear set includes a sun gear connected to the output shaft, a ring gear rotatably mounted in the gear box and a planet carrier rotatable with the input shaft and mounting a plurality of planetary gears between the sun gear and ring gear. A cone clutch engages the ring gear to ground it through a Belleville spring, piston and fulcrum, and centrifugal weights act to unground the ring gear; a one-way clutch between the shafts allows the output shaft to overrun the input shaft when the ring gear is grounded and rotate the output shaft with the input shaft as a unit when the ring gear is ungrounded.
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Froslie, L. E. et al., "Automatic Transmission Friction Elements." in Design Practices-Passenger Car Automatic Transmissions-Part I (New York, Society of Automotive Engineers, Inc., 1962), pp. 81-90.
Churchill Bruce A.
Raugh Jeffery D.
Borg-Warner Automotive Inc.
Diehl Dwight G.
Geppert James A.
Jennings James J.
Zieg Robert L.
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