Fluid friction clutch

Details Fluid friction clutch Fluid friction clutch

1989-05-16

1990-10-16

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500, F16D 4325

Patent

active

049628364

ABSTRACT:
A fluid friction clutch is disclosed for vehicle cooling fans and the like, which clutch is controlled by a bimetallic element controlling a clutch fluid valve opening.
Since the bimetallic element must have degrees of freedom, the fastening of the bimetallic elements at the cover of fluid friction clutch results in difficulties, particularly if the clutch is subjected to high stress. In order to avoid that the bimetallic element can move away from its position in the case of high stress, it is suggested to provide a bimetallic element which is clamped in only at one side and the free end of which has the required freedom of motion, but which can be fastened securely in its position. The new clutch is used for cooling fans of motor vehicle engines which are to be switched as a function of the temperature.

REFERENCES:
patent: 3191733 (1965-06-01), Weir
patent: 3217849 (1965-11-01), Weir
patent: 3262528 (1966-07-01), Weir
patent: 4386585 (1983-06-01), Kittel et al.
patent: 4505367 (1985-03-01), Martin
patent: 4629046 (1986-12-01), Martin
patent: 4662495 (1987-05-01), Brunken
patent: 4665694 (1987-05-01), Brunken

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