Clutchless viscous fan drive wherein input member serves as...

Details Clutchless viscous fan drive wherein input member serves as... Clutchless viscous fan drive wherein input member serves as...

2006-05-16

2006-05-16

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Clutches

Fluent material

C192S08200T, C123S041120

Reexamination Certificate

active

07044282

ABSTRACT:
A clutchless viscous fan drive system is formed in which the body of the fan drive is attached directly to the input shaft and rotates at full input speed. A seal is pressed into the cover at the output drive and seals against a cast-in seal ring on the body. The fan drive formed does not need a clutch and thus will not trap heat inside the viscous fluid chamber between the body and cover. The body rotates at full input speed with the input shaft and will improve airflow across the body side fins, therein improving fan drive cooling performance.

REFERENCES:
patent: 3144922 (1964-08-01), Weir
patent: 4692053 (1987-09-01), Sampedro
patent: 4702360 (1987-10-01), Tanaka
patent: 4874071 (1989-10-01), White
patent: 4913273 (1990-04-01), Mader
patent: 4949825 (1990-08-01), Light
patent: 4979601 (1990-12-01), Hagiwara et al.
patent: 6305519 (2001-10-01), Katoh et al.
patent: 6561141 (2003-05-01), Stretch et al.
patent: 6679365 (2004-01-01), Katoh et al.

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