# US 5,701,986 A · Wet clutch assembly

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- Number: US 5,701,986 A
- Document ID: US5701986A
- Status: Granted
- Kind: A
- Application number: 08/580,009
- Filed: 1995-12-20
- Granted: 1997-12-30
- Earliest claimed: 1994-12-24
- Assignees: Massey-Ferguson Inc.
- Inventors: Patrick Lorriette
- Web page: https://patentgrep.com/patent/US5701986A

## CPC

- F16D 25/082: {the line of action of the fluid-actuated members co-inciding with the axis of rotation}
- F16D 25/123: {in view of cooling and lubrication}
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

A wet clutch assembly comprises a stack of clutch members enclosed into a cover. An oil inlet communicates with the interior of the cover at or near the radial center, whilst an oil outlet communicates with the interior at a point near the periphery, adjacent a shoulder in the interior peripheral surface. Oil entering the cover is propelled outwardly and around the interior peripheral surface by the rotation of the clutch members, and builds up against the shoulder creating pressure to expel the oil.

## Claims

### Claim 1

A wet clutch assembly comprising a plurality of interleaved clutch members enclosed within a cover, said cover being substantially circular in cross section when viewed along the axis of said assembly, said cover having:
a tangential portion leading up to a generally radially extending shoulder; said tangential portion and said shoulder being integrally formed with said cover;
an oil inlet communicating with an interior of said cover at or near the radial center thereof; and
an oil outlet adjacent to said shoulder, wherein oil entering into said cover is propelled radially outwardly by rotational motion of said clutch members and travels circumferentially around said internal surface building up against said shoulder.

### Claim 2 (depends on 1)

The wet clutch assembly defined in claim 1 wherein said oil outlet is directed axially.