# US 2010/0166347 A1 · Cooled thin-shell bearing bushing

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- Number: US 2010/0166347 A1
- Document ID: US20100166347A1
- Status: Published application
- Kind: A1
- Application number: 12/451,664
- Filed: 2008-05-23
- Published: 2010-07-01
- Earliest claimed: 2007-05-24
- Assignees: Flender-Graffenstaden S.A.S.
- Inventors: Michel Wendling
- Web page: https://patentgrep.com/patent/US20100166347A1

## CPC

- F16C 37/002: {of fluid bearings}
- F16C 17/022: {with a pair of essentially semicircular bearing sleeves}
- F16C 33/1075: {Wedges, e.g. ramps or lobes, for generating pressure}
- F16C 2360/23: Gas turbine engines
- F16C 2361/61: Toothed gear systems, e.g. support of pinion shafts
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

Cooling system for a hydrodynamic bearing bushing of annular appearance positioned in a support body, equipped with means of distributing cold oil under pressure to a shaft rotating in the bearing bushing, wherein it consists of a thin annular shell, the external surface of which is closely fitted into the bore of said support body, grooves being made in that part of said bore that corresponds to the angular region of the bearing bushing on which the load is applied during operation, said grooves being supplied with cold oil tapped downstream from the distribution means.

## Claims

### Claim 1

A cooling system for a hydrodynamic bearing bushing of annular appearance positioned in a support body, provided with means for distributing cold oil under pressure towards a shaft rotating in the bearing bushing, wherein it consists of a thin annular shell, the external surface of which is closely fitted into the bore of said support body, grooves being made in a portion of said bore corresponding to the angular region of the bearing bushing on which the load is applied during operation, said grooves being supplied with cold oil tapped downstream from the distribution means.

### Claim 2 (depends on 1)

The cooling system for a hydrodynamic bearing bushing according to claim 1, wherein the grooves are made in the support body in the form of a network of axial grooves.

### Claim 3 (depends on 1)

The cooling system for a hydrodynamic bearing bushing according to claim 1, wherein the grooves are made in the support body in the form of a network of helicoidal grooves.

### Claim 4 (depends on 3)

The cooling system for a hydrodynamic bearing bushing according to claim 3, wherein the shell is in stainless steel.

### Claim 5 (depends on 1)

The cooling system for a hydrodynamic bearing bushing according to claim 1, wherein the shell is in a copper-based alloy with high heat conductivity.

### Claim 6 (depends on 1)

The cooling system for a hydrodynamic bearing bushing according to claim 1, wherein support body is in stainless steel.

### Claim 7 (depends on 2)

The cooling system for a hydrodynamic bearing bushing according to claim 2, wherein the shell is in a copper-based alloy with high heat conductivity.

### Claim 8 (depends on 3)

The cooling system for a hydrodynamic bearing bushing according to claim 3, wherein the shell is in a copper-based alloy with high heat conductivity.

### Claim 9 (depends on 2)

The cooling system for a hydrodynamic bearing bushing according to claim 2, wherein support body is in stainless steel.

### Claim 10 (depends on 3)

The cooling system for a hydrodynamic bearing bushing according to claim 3, wherein support body is in stainless steel.

### Claim 11 (depends on 4)

The cooling system for a hydrodynamic bearing bushing according to claim 4, wherein support body is in stainless steel.

### Claim 12 (depends on 5)

The cooling system for a hydrodynamic bearing bushing according to claim 5, wherein support body is in stainless steel.

### Claim 13 (depends on 7)

The cooling system for a hydrodynamic bearing bushing according to claim 7, wherein support body is in stainless steel.

### Claim 14 (depends on 8)

The cooling system for a hydrodynamic bearing bushing according to claim 8, wherein support body is in stainless steel.