Dump valve for wet clutch

Details Dump valve for wet clutch Dump valve for wet clutch

1976-09-13

1979-03-06

O'Dea, William F.

192 clutches and power-stop control

Elements

Lubricating, insulating, or cooling

192 13R, F16D 1372

Patent

active

041426193

ABSTRACT:
A dump valve mechanism for a wet clutch wherein the clutch includes a plurality of friction elements supplied with lubricating and cooling oil when the clutch is engaged and including a fluid pumping means as a part of a release mechanism, the release mechanism being axially movable to a position engaging a brake for a transmission input shaft. The dump valve is defined by a pair of annular surfaces which are opened and separated when the brake is engaged due to relative movement between parts of the release mechanism to divert the lubricant and cooling fluid from the clutch discs as the brake is applied to prevent viscous drag from providing unwanted drive between the friction elements when the clutch is disengaged.

REFERENCES:
patent: 3033327 (1962-05-01), Kelley
patent: 3157257 (1964-11-01), Root
patent: 3176813 (1965-04-01), Lee et al.
patent: 3314513 (1967-04-01), Lake et al.
patent: 3334717 (1967-08-01), Spokas et al.
patent: 3351169 (1967-11-01), McIndoe
patent: 3540557 (1970-11-01), Hasselbacher et al.
patent: 3722647 (1973-03-01), Kraus et al.
patent: 3749217 (1973-07-01), Bush et al.
patent: 3773157 (1973-11-01), Koch, Jr. et al.

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