# US 10,245,951 B2 · Hybrid transmission with dual-drive pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,951 B2 - Document ID: US10245951B2 - Status: Granted - Kind: B2 - Application number: 15/662,339 - Filed: 2017-07-28 - Published: 2019-01-31 - Granted: 2019-04-02 - Earliest claimed: 2017-07-28 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Gregory Daniel Goleski; David Allen Janson; Jeffrey Edward Maurer; Matthew David Hammond - Web page: https://patentgrep.com/patent/US10245951B2 ## CPC - B60K 25/06: from the transmission power take-off - B60K 6/36: characterised by the transmission gearings - B60K 6/40: characterised by the assembly or relative disposition of components - B60K 6/44: Series-parallel type - B60K 6/445: Differential gearing distribution type - B60K 6/48: Parallel type - B60K 6/54: Transmission for changing ratio - B60K 25/00: Auxiliary drives (arrangement of tyre-inflating pumps mounted on vehicles B60C23/10) - F16D 41/00: Freewheels or freewheel clutches (cycle brakes controlled by back-pedalling B62L5/00 {; one-way linear clutches F16B7/16}) - F16H 7/06: with chains - F16H 55/30: Chain-wheels - B60K 2006/4808: {Electric machine connected or connectable to gearbox output shaft} - B60K 2025/005: {driven by electric motors forming part of the propulsion unit} - F16D 41/066: all members having the same size and only one of the two surfaces being cylindrical - Y02T 10/62: Hybrid vehicles - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - F16H: GEARING - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract In a pump system for a hybrid electric transmission, the pump is alternately driven by the input shaft and the output shaft, whichever is rotating faster. The input shaft and output shaft are co-axial. Sprockets and a chain transmit power from axis of the input and output shafts to the axis of the pump. The driven sprocket is selectively coupled to the input shaft by a first one-way-clutch and selectively coupled to the output shaft by a second one-way-clutch. Two alternative one-way-clutch and bearing arrangement are disclosed. ## Claims ### Claim 1 A hybrid transmission comprising: an input shaft adapted for fixation to an internal combustion engine; an output shaft co-axial with the input shaft and driveably connected to a differential; a motor configured to propel the output shaft with the input shaft stationary; a driving sprocket selectively coupled to the input shaft by a first one-way-clutch and selectively coupled to the output shaft by a second one-way-clutch; a driven sprocket; a chain engaging both the driving sprocket and the driven sprocket; and a pump driveably connected to the driven sprocket. ### Claim 2 (depends on 1) The hybrid transmission of claim 1 wherein the driving sprocket is supported by the input shaft via a combined bearing and one-way-clutch assembly. ### Claim 3 (depends on 2) The hybrid transmission of claim 2 wherein the second one-way-clutch acts on a radially outer surface of the driving sprocket and acts on a radially inner surface of the output shaft. ### Claim 4 (depends on 1) The hybrid transmission of claim 1 wherein the driving sprocket includes an inner member splined to an outer member, the inner member selectively coupled to the input shaft by the first one-way-clutch and the outer member selectively coupled to the output shaft by the second one-way-clutch. ### Claim 5 (depends on 4) The hybrid transmission of claim 4 wherein the inner member is supported by the input shaft via a first combined bearing and one-way-clutch assembly. ### Claim 6 (depends on 4) The hybrid transmission of claim 4 wherein the outer member is supported by the output shaft via a second combined bearing and one-way-clutch assembly. ### Claim 7 A hybrid transmission comprising: first and second sprockets drivably connected to one another by a chain, the first sprocket selectively coupled to an input shaft by a first one-way-clutch and selectively coupled to an output shaft by a second one-way-clutch; a first electric machine configured to propel the output shaft with the input shaft stationary; and a pump driven by the second sprocket. ### Claim 8 (depends on 7) The hybrid transmission of claim 7 further comprising: a simple planetary gear set having a sun gear fixedly coupled to a second electric machine, a carrier fixedly coupled to the input shaft, and a ring gear drivably connected to the output shaft and driveably connected to the first electric machine. ### Claim 9 (depends on 7) The hybrid transmission of claim 7 wherein the first sprocket is supported by the input shaft via a combined bearing and one-way-clutch assembly. ### Claim 10 (depends on 9) The hybrid transmission of claim 9 wherein the second one-way-clutch acts on a radially outer surface of the first sprocket and acts on a radially inner surface of the output shaft. ### Claim 11 (depends on 7) The hybrid transmission of claim 7 wherein the first sprocket includes an inner member splined to an outer member, the inner member selectively coupled to the input shaft by the first one-way-clutch and the outer member selectively coupled to the output shaft by the second one-way-clutch. ### Claim 12 A pump system for a hybrid transmission comprising: first and second sprockets drivably connected to one another by a chain, the first sprocket selectively coupled to an input shaft by a first one-way-clutch and selectively coupled to an output shaft by a second one-way-clutch, the input shaft adapted for connection to an internal combustion engine and the output shaft adapted to drive vehicle wheels; and a pump driven by the second sprocket. ### Claim 13 (depends on 12) The hybrid transmission of claim 12 wherein the first sprocket is supported by the input shaft via a combined bearing and one-way-clutch assembly. ### Claim 14 (depends on 13) The hybrid transmission of claim 13 wherein the second one-way-clutch acts on a radially outer surface of the first sprocket and acts on a radially inner surface of the output shaft. ### Claim 15 (depends on 12) The hybrid transmission of claim 12 wherein the first sprocket includes an inner member splined to an outer member, the inner member selectively coupled to the input shaft by the first one-way-clutch and the outer member selectively coupled to the output shaft by the second one-way-clutch.