# US 2015/0147157 A1 · Pivot pin for a turbine engine comprising a ring for recovering a flow of lubricating oil with a plurality of lubricating oil discharge ports

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- Number: US 2015/0147157 A1
- Document ID: US20150147157A1
- Status: Published application
- Kind: A1
- Application number: 14/408,425
- Filed: 2013-06-12
- Published: 2015-05-28
- Earliest claimed: 2012-06-26
- Assignees: Snecma
- Applicants: Snecma
- Inventors: Eddy Stephane Joel Fontanel; Giuliana Elisa Rossi; Philippe Pierre Vincent Bouiller; Emmanuel Da Costa; Julien Foll
- Web page: https://patentgrep.com/patent/US20150147157A1

## CPC

- F01D 25/183: {Sealing means}
- F01D 25/18: Lubricating arrangements (of machines or engines in general F01M)
- F05D 2260/6022: of leakage having past a seal
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A journal configured to be driven in rotation in a housing of a turbine engine, or for an aircraft, the journal including: a circumferential main body including plural ventilation openings configured to allow plural axial airflows to circulate from upstream to downstream in the turbine engine, two consecutive ventilation openings being connected by a connecting segment, and a circumferential ring for recovering a flow of lubrication oil, which ring is rigidly connected to the main body and is radially inside the ventilation openings, the recovery ring including plural radial discharge openings for allowing plural radial flows of oil to be discharged towards the outside, each discharge opening being radially aligned with a connecting segment of the main body to allow each flow of oil to be discharged between the airflows.

## Claims

### Claim at position 1

1-14. (canceled)

### Claim 15

A journal configured to be driven in rotation in a housing of a turbine engine, or for an aircraft, the journal comprising:
a circumferential main body comprising a plurality of angularly distributed ventilation openings configured to allow a plurality of axial airflows to circulate from upstream to downstream in the turbine engine, two consecutive ventilation openings being connected by a connecting segment; and
a circumferential ring for recovering a flow of lubrication oil, which ring is rigidly connected to the main body and is radially inside the ventilation openings, the recovery ring extending longitudinally and comprising a plurality of radial discharge openings for allowing a plurality of radial flows of oil to be discharged towards the outside, of the circumferential ring;
wherein each discharge opening is radially aligned with a connecting segment of the main body to allow each flow of oil to be discharged between the airflows.

### Claim 16 (depends on 15)

A journal according to claim 15, wherein at least one connecting segment that is radially aligned with a discharge opening of the recovery ring comprises guide means for guiding a radial flow of oil.

### Claim 17 (depends on 16)

A journal according to claim 16, wherein the guide means is in a form of a radial groove.

### Claim 18 (depends on 16)

A journal according to claim 16, wherein the guide means is in a form of a guide channel.

### Claim 19 (depends on 18)

A journal according to claim 18, wherein the guide channel has a U-shaped cross section.

### Claim 20 (depends on 18)

A journal according to claim 18, wherein the guide channel is added to the connecting segment.

### Claim 21 (depends on 18)

A journal according to claim 18, wherein the guide channel is rigidly connected to the circumferential ring.

### Claim 22 (depends on 15)

A journal according to claim 15, further comprising a circumferential recovery passage for recovering the flows of lubrication oil that are radially on an outside of the ventilation openings.

### Claim 23 (depends on 22)

A journal according to claim 22, wherein the recovery passage comprises means for draining the flow of lubrication oil.

### Claim 24 (depends on 15)

A journal according to claim 15, further comprising radial sealing strips configured to cooperate with an abradable element of the housing of the turbine engine, the recovery ring is radially on the outside of the sealing strips.

### Claim 25 (depends on 24)

A journal according to claim 24, wherein the recovery ring extends longitudinally as far right of the sealing strips.

### Claim 26 (depends on 15)

A journal according to claim 15, wherein the recovery ring extends longitudinally in a downstream direction from the main body of the journal.

### Claim 27 (depends on 15)

A journal according to claim 15, further comprising a circumferential auxiliary body having a U-shaped cross section to define a base that is in planar contact with the main body, a radially upper branch forming the recovery ring and a radially lower branch on which radial sealing strips are formed which are configured to cooperate with an abradable element of the housing of the turbine engine.

### Claim 28 (depends on 15)

A turbine engine, or for an aircraft, comprising a housing and an axial body that is rotatably mounted in the housing, the rotary body comprising a journal according to claim 15.
