# US 10,502,222 B2 · Retention component for turbomachinery device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,222 B2 - Document ID: US10502222B2 - Status: Granted - Kind: B2 - Application number: 16/099,348 - Filed: 2016-05-06 - Published: 2019-05-23 - Granted: 2019-12-10 - Earliest claimed: 2016-05-06 - Applicants: BorgWarner Inc. - Inventors: Brock S. Fraser; Allen D. Stoner, II - Web page: https://patentgrep.com/patent/US10502222B2 ## CPC - F04D 29/056: Bearings - F02B 33/40: of non-positive-displacement type - F02B 39/10: electric - F02B 39/14: Lubrication of pumps; Safety measures therefor - F04D 25/06: the pump being electrically driven (F04D25/08 takes precedence) - F04D 25/0606: {the electric motor being specially adapted for integration in the pump} - F04D 29/063: specially adapted for elastic fluid pumps - F04D 29/102: {especially adapted for elastic fluid pumps} - H02K 5/16: Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields (magnetic bearings H02K7/09) - H02K 5/1732: {radially supporting the rotary shaft at both ends of the rotor (H02K5/1737 takes precedence)} - H02K 7/083: {radially supporting the rotary shaft at both ends of the rotor (H02K7/086, H02K7/09 take precedence)} - H02K 9/197: in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator - F05D 2220/40: in turbochargers - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A number of variations may include a product comprising: a turbomachinery device comprising: an electric motor surrounding a portion of a shaft constructed and arranged to selectively drive the shaft in rotation about a rotational axis, wherein the electric motor further comprises a stator comprising a lamination stack; a housing surrounding the electric motor, wherein the housing includes a plurality of channels constructed and arranged to lubricate a first bearing; and wherein the lamination stack includes at least one retention component wherein the retention component is constructed and arranged to locking the stator in an axial direction while locking rotation of the stator about the rotational axis and wherein the retention component further comprises at least one conduit constructed and arranged to pass fluid through the electric motor to a second bearing. ## Claims ### Claim 1 A product comprising: a turbomachinery device comprising: an electric motor surrounding a portion of a shaft constructed and arranged to selectively drive the shaft in rotation about a rotational axis, wherein the electric motor further comprises a stator comprising a lamination stack; a housing surrounding the electric motor, wherein the housing includes a plurality of channels constructed and arranged to lubricate a first bearing; and wherein the lamination stack includes at least one retention component wherein the retention component is constructed and arranged to lock the stator in an axial direction while locking rotation of the stator about the rotational axis, and wherein the retention component further comprises at least one conduit constructed and arranged to pass fluid through the electric motor to a second bearing. ### Claim 2 (depends on 1) The product of claim 1 wherein the lamination stack further comprises a plurality of teeth, and wherein the at least one conduit comprises a plurality of conduits which each extend through openings between the plurality of teeth. ### Claim 3 (depends on 1) The product of claim 1 wherein the retention component comprises at least one retention fastener constructed and arranged to fix the stator to the housing. ### Claim 4 (depends on 1) The product of claim 1 further comprising a turbocharger turbine wheel and wherein the shaft is operatively connected to the turbocharger turbine wheel, and wherein the turbocharger turbine wheel drives the shaft. ### Claim 5 (depends on 1) The product of claim 1 further comprising a turbocharger compressor wheel and wherein the shaft is operatively connected to the turbocharger compressor wheel to drive the turbocharger compressor wheel. ### Claim 6 (depends on 1) The product of claim 1 further comprising a first housing portion constructed and arranged to house the first bearing and having a first plurality of fluid channels; a second housing portion constructed and arranged to house the second bearing and having a second plurality of fluid channels; an fluid feed tube attached to the first housing portion, and wherein the first plurality of fluid channels and the second plurality of fluid channels are fluidly connected to the at least one conduit. ### Claim 7 (depends on 6) The product of claim 6 wherein the first housing portion further includes a threaded bore defined by an inner threaded surface and wherein the fluid feed tube is at least partially threaded and is threaded into the threaded bore. ### Claim 8 (depends on 7) The product of claim 7 wherein the fluid feed tube includes a pilot feature to prevent cross threading between the threaded bore and the fluid feed tube. ### Claim 9 (depends on 1) The product of claim 1 wherein the at least one conduit is a first length and the stator is a second length, and wherein the first length of the at least one conduit is greater than the second length of the stator. ### Claim 10 (depends on 3) The product of claim 3 wherein the retention component fastener comprises a nut attached to a first end of the at least one conduit to provide a preload for locking of the stator in a predetermined location. ### Claim 11 (depends on 10) The product of claim 10 wherein a second end of the at least one conduit bottoms out in the second housing portion. ### Claim 12 (depends on 10) The product of claim 10 wherein a first housing portion is slid over the nut to form a seal. ### Claim 13 (depends on 1) The product of claim 1 wherein the at least one conduit comprises at least one through-hole in the lamination stack defined by an inner cylindrical surface. ### Claim 14 (depends on 13) The product of claim 13 wherein the at least one conduit extends through a tooth of the lamination stack. ### Claim 15 A method comprising: providing a turbomachinery device comprising a rotational shaft, a first bearing, a second bearing and an electric motor comprising a stator comprising at least one retention component wherein the retention component is constructed and arranged to lock the stator in an axial direction while locking rotation of the stator about a rotational axis, and wherein the retention component further comprises at least one conduit constructed and arranged to pass fluid through the electric motor to a second bearing; and feeding fluid to one end of a housing so that fluid is supplied to a first bearing and through the at least one conduit so that fluid is supplied to a second bearing. ### Claim 16 (depends on 15) The method of claim 15 further comprising rotating the shaft about the rotational axis while locking the stator in place in the axial direction and about the rotational axis with the retention component. ### Claim 17 (depends on 15) The method of claim 15 wherein the retention component comprises at least one retention fastener constructed and arranged to fix the stator to the housing. ### Claim 18 (depends on 17) The method of claim 17 wherein the at least one conduit extends through a tooth of the stator. ### Claim 19 (depends on 15) The method of claim 15 wherein the at least one conduit is a first length and the stator is a second length, and wherein the first length of the at least one conduit is greater than the second length of the stator. ### Claim 20 (depends on 17) The method of claim 17 wherein a first end of the conduit is threaded to accept the at least one retention fastener.