Viscous fan clutch actuated by a heating element and ambient...

Details Viscous fan clutch actuated by a heating element and ambient... Viscous fan clutch actuated by a heating element and ambient...

2005-09-13

2005-09-13

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Clutches

Fluent material

C192S058660, C192S058681, C192S08200T

Reexamination Certificate

active

06942083

ABSTRACT:
A fan apparatus is disclosed which includes a fan coupled to a drive mechanism via a viscous clutch. The viscous clutch includes a drive chamber containing a hydraulic fluid with an amount of hydraulic fluid in the drive chamber being related to a torque transmitted from said drive mechanism to the fan; a valve coupled to the drive chamber controlling flow of hydraulic fluid into the drive chamber; a bimetallic strip coupled to the valve; and a heating element coupled to the viscous clutch close to the bimetallic strip. The bimetallic strip is located in a position open to ambient air.

REFERENCES:
patent: 4040304 (1977-08-01), McCabe
patent: 4108424 (1978-08-01), Rizzo
patent: 4271945 (1981-06-01), Budinski
patent: 4310084 (1982-01-01), Nonnenmann
patent: 4351426 (1982-09-01), Bopp
patent: 4550695 (1985-11-01), Kikuchi et al.
patent: 4650045 (1987-03-01), Weible et al.
patent: 5799765 (1998-09-01), Ono et al.
patent: 2001027260 (2001-01-01), None

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