# US 8,783,433 B2 · Dry-clutch transmission with cooling techniques

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- Number: US 8,783,433 B2
- Document ID: US8783433B2
- Status: Granted
- Kind: B2
- Application number: 12/896,868
- Filed: 2010-10-02
- Published: 2012-04-05
- Granted: 2014-07-22
- Earliest claimed: 2010-10-02
- Assignees: Ford Global Technologies, LLC
- Applicants: John Edward Brevick
- Inventors: John Edward Brevick
- Web page: https://patentgrep.com/patent/US8783433B2

## CPC

- F16D 13/72: Features relating to cooling
- F16D 13/64: Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae F16D65/12)
- F16D 13/70: Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members {(clutch flywheels comprising two or more masses with a rotational damper F16F15/12)}
- F16D 2300/0212: Air cooling
- F16D 2300/26: Cover or bell housings; Details or arrangements thereof
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

The present disclosure relates to a dry-clutch transmission having various cooling techniques. Some techniques include forming different structural features on transmission components so as to create an organized air flow. The disclosed techniques are applicable to both opened and closed transmission housings.

## Claims

### Claim 1

A dry-clutch transmission, comprising:
a drive plate having a first set of holes spaced circumferentially around the drive plate, a first set of blades out of plane from a face of the drive plate and each extending over a respective one of the first set of holes in a first direction, a second set of holes spaced circumferentially around the drive plate radially inward from the first set, and a second set of blades out of plane from the face and each extending over a respective one of the second set of holes in a second direction, different from the first direction.

### Claim 2 (depends on 1)

The transmission of claim 1, wherein the second set of blades are oriented to receive or dispense air in a clockwise direction from a transmission-to-engine perspective and the first set of blades are oriented to receive air in a counterclockwise direction from a transmission-to-engine perspective.

### Claim 3 (depends on 2)

The transmission of claim 2, wherein the first set of blades are integral with and angled out of plane from the drive plate.

### Claim 4 (depends on 1)

The transmission of claim 1, wherein the first and second sets of blades are of a bi-metal construction attached to the drive plate and configured to flex angularly relative to the face based on a temperature of the first and second sets of blades.

### Claim 5 (depends on 4)

The transmission of claim 4, wherein the first and second sets of blades are composed of aluminum and steel.

### Claim 6 (depends on 1)

The transmission of claim 1, including a clutch cover mounted adjacent to the drive plate, the clutch cover including a plurality of generally radially outwardly extending air holes spaced circumferentially around the clutch cover and oriented to direct air radially outward.

### Claim 7 (depends on 1)

The transmission of claim 1, further comprising:
a second plate including radially outwardly extending air channels spaced circumferentially around and formed in the second plate and configured to direct air radially outward.

### Claim 8 (depends on 7)

The transmission of claim 7, wherein the second plate is a clutch pressure plate.

### Claim 9 (depends on 7)

The transmission of claim 7, wherein the second plate is flywheel plate.

### Claim 10 (depends on 7)

The transmission of claim 7, further comprising:
a clutch cover mounted adjacent to the drive plate, the clutch cover including a plurality of generally radially outwardly extending air holes spaced circumferentially around the clutch cover and oriented to direct air radially outward.