# US 9,752,616 B2 · Bearing system with bearing damper > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,616 B2 - Document ID: US9752616B2 - Status: Granted - Kind: B2 - Application number: 14/670,661 - Filed: 2015-03-27 - Published: 2016-09-29 - Granted: 2017-09-05 - Earliest claimed: 2015-03-27 - Assignees: Pratt & Withney Canada Corp. - Applicants: Pratt & Whitney Canada Corp. - Inventors: Abdelkhalek Saadi; Roger Huppe; Daniel Blais - Web page: https://patentgrep.com/patent/US9752616B2 ## CPC - F16C 33/1065: {Grooves on a bearing surface for distributing or collecting the liquid} - F01D 25/16: Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) - F01D 25/162: {Bearing supports} - F01D 25/18: Lubricating arrangements (of machines or engines in general F01M) - F01D 25/183: {Sealing means} - F02C 7/06: Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D25/18; of machines or} engines in general F01M) - F16C 27/045: {with a fluid film, e.g. squeeze film damping} - F16C 33/1045: {Details of supply of the liquid to the bearing} - F16C 33/106: {Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid} - F16C 33/6685: {Details of collecting or draining, e.g. returning the liquid to a sump} - F16C 37/00: Cooling of bearings - F16C 19/26: with a single row of rollers - F16C 33/6659: {Details of supply of the liquid to the bearing, e.g. passages or nozzles} - F16C 37/007: {of rolling bearings} - F16C 2360/23: Gas turbine engines - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) ## Abstract A bearing system comprises a bearing configured to be mounted to a shaft. A bearing housing interfaces the bearing to a structure. An annular gap is defined between an outer annular surface of the bearing housing and the structure and configured to receive oil therein. An outlet defined in an outer section surface of the bearing housing is oriented toward a component axially spaced from the bearing. A fluid passageway between the at least one outlet and the annular gap for fluid communication therebetween. In use the fluid passageway directs pressurized oil from the annular gap to the outlet to reach the adjacent component. A method for using oil from a bearing to cool or lubricate a component axially spaced from the bearing is also provided. ## Claims ### Claim 1 A bearing system comprising: a bearing configured to be mounted to a shaft; and a bearing housing configured to interface the bearing to a structure by being connected to an outer race of the bearing, an annular gap being defined between an outer annular surface of the bearing housing and the structure and configured to receive oil therein, at least one outlet defined in an outer section surface of the bearing housing and oriented toward a component axially spaced from the bearing, and at least one fluid passageway between the at least one outlet and the annular gap for fluid communication therebetween; whereby in use the at least one fluid passageway directs pressurized oil from the annular gap to the at least one outlet to reach the adjacent component. ### Claim 2 (depends on 1) The bearing system according to claim 1, wherein the at least one fluid passageway has an annular groove in the outer annular surface of the bearing housing. ### Claim 3 (depends on 2) The bearing system according to claim 2, wherein the at least one fluid passageway has at least one radial throughbore extending from the annular groove in the outer annular surface of the bearing housing to an inner annular surface thereof, and an axial groove defined in the inner annular surface. ### Claim 4 (depends on 1) The bearing system according to claim 1, wherein the at least one fluid passageway has at least one radial throughbore extending from the outer annular surface of the bearing housing to an inner annular surface thereof, and an axial groove defined in the inner annular surface. ### Claim 5 (depends on 1) The bearing system according to claim 1, wherein the bearing housing has a cylindrical body portion comprising the outer annular surface. ### Claim 6 (depends on 4) The bearing system according to claim 4, wherein the outer race of the bearing and the inner annular surface of the bearing housing are in close-fitting contact to concurrently form a sealed surface for the axial groove. ### Claim 7 (depends on 1) The bearing system according to claim 1, wherein the annular gap forms a bearing damper in use with oil therein. ### Claim 8 (depends on 1) The bearing system according to claim 1, further comprising a pair of annular sealing grooves in the outer annular surface of the bearing housing configured to receive annular seals, the annular sealing grooves delimiting the annular gap. ### Claim 9 (depends on 8) The bearing system according to claim 8, wherein the at least one fluid passageway is in fluid communication with at least one of the pair of annular sealing grooves for pressurizing the annular seal therein against the structure. ### Claim 10 (depends on 8) The bearing system according to claim 8, wherein one of the annular sealing grooves is in fluid communication with the at least one outlet separately from the at least one passageway. ### Claim 11 (depends on 1) The bearing system according to claim 1, wherein the outer section surface is an axial end surface of the bearing housing. ### Claim 12 (depends on 1) The bearing system according to claim 1, wherein the at least one outlet has a counterbore at an end of a conduit of the fluid passageway. ### Claim 13 (depends on 1) An assembly of a bearing system and shaft comprising: a shaft having a component thereon; the bearing system according to claim 1.