Combination accessory drive and speed reducer

Details Combination accessory drive and speed reducer Combination accessory drive and speed reducer

1988-09-02

1989-11-07

Wright, Dirk

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74752D, F16H 344, F16H 5710

Patent

active

048784010

ABSTRACT:
In combination with a conventional vehicle accessory drive pulley directly mounted and driven by a crankshaft 10 an epicyclic gear speed reducer set (F) is assembled as a unit A which comprises input and reaction sun gears (B,C). A combination planet carrier and drive casing (D) carries a plurality of compound planets (40,42), and an idler gear (43). Drive casing (D) of the assembly includes an integral pulley (34). Locking the reaction sun gear (C) to the carrier drive casing (D) produces a direct drive between the crankshaft and accessory. Braking the reaction sun gear to the engine frame (58), will switch the pulley assembly from direct drive to a reduction drive. This is accomplished automatically at a predetermined vehicle speed.

REFERENCES:
patent: 1118616 (1914-11-01), Apple
patent: 1781925 (1930-11-01), Johnson
patent: 2153856 (1939-04-01), Weydell
patent: 2593804 (1952-04-01), Schott
patent: 3038354 (1962-06-01), Bernard
patent: 3108494 (1963-10-01), Kell
patent: 3501980 (1970-03-01), Arick
patent: 4625587 (1986-12-01), Hosono
patent: 4644824 (1987-02-01), Shimizu
patent: 4663989 (1987-05-01), Brodbeck
patent: 4730516 (1988-03-01), Kaneyuki

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