Temperature responsive coupling

Details Temperature responsive coupling Temperature responsive coupling

1974-11-29

1976-08-03

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Fluent material

137 79, 192 82T, 251 11, F16D 3500, F16D 4325

Patent

active

039723992

ABSTRACT:
A temperature controlled fluid shear coupling adapted to drive a fan for an internal combustion engine. The coupling includes a driven member defining a housing adapted to carry the fan, a drive member adapted to be driven by the engine, a working chamber defined by the driven and drive member and containing viscous fluid, a pump for removing fluid from the working chamber to a reservoir, and temperature control assembly which varies the volume of fluid in the working chamber by controlling fluid flow from the reservoir to the working chamber in response to temperature changes. The temperature control includes a wax filled power element and a valving member. The valving member blocks fluid flow from the reservoir to the working chamber when the wax is solid and allows flow to the working chamber when the wax is a liquid.

REFERENCES:
patent: 3273850 (1966-09-01), Kolze
patent: 3323623 (1967-06-01), Roper
patent: 3404832 (1968-10-01), Sutaruk
patent: 3648811 (1972-03-01), LaFlame
patent: 3727735 (1973-04-01), LaFlame
patent: 3739891 (1973-06-01), LaFlame

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