Patents by Inventor Daniel P. Fisher
Daniel P. Fisher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10953746Abstract: A hydraulic control unit (HCU) assembly, for an electro-hydraulic limited slip differential system for a vehicle, includes a support bracket configured to couple to an underbody of the vehicle in a location remote from a live axle assembly of the vehicle, and an HCU including an integrated accumulator and reservoir assembly, a control valve assembly, and a motor and hydraulic pump assembly. The HCU is coupled to the support bracket.Type: GrantFiled: January 14, 2019Date of Patent: March 23, 2021Assignee: Eaton Intelligent Power LimitedInventors: Andrew N. Edler, Kandice Kawala, Randy Graves, Daniel P. Fisher
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Patent number: 10753447Abstract: An electro-hydraulic limited slip differential system for a vehicle includes an axle assembly having an axle housing having an aperture formed therein, and an electro-hydraulic limited slip differential assembly disposed within the axle housing. The limited slip differential assembly includes a differential case, a differential gear assembly disposed in the differential case, a clutch assembly having a clutch pack and a clutch actuator assembly, and a hydraulic fitting disposed at least partially within the aperture. The hydraulic fitting is coupled to a hydraulic port of the clutch actuator assembly.Type: GrantFiled: March 22, 2018Date of Patent: August 25, 2020Inventors: Andrew N. Edler, Ashish Wadhva, Brian St. John, Kandice Kawala, Randy Graves, Daniel P. Fisher
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Patent number: 10502301Abstract: A differential includes a differential case; a side gear; a pinion configured for meshing engagement with the side gear; and a pinion housing configured to support the pinion. The pinion housing includes a first face; a second face opposing the first face; a first projection located on the first face; and a second projection located on the second face. The pinion housing also includes an aperture or hole extending radially inwardly from an outer radial surface of the generally annular ring; and a channel extending from the first face to the second face, wherein the channel is substantially radially aligned with the aperture or hole. In embodiments, the pinion housing includes one or more transfer formations configured to transfer torque from the differential case, and the pinion housing is configured to permit movement in an axial direction between a pair of side gears.Type: GrantFiled: May 25, 2017Date of Patent: December 10, 2019Assignee: Eaton Intelligent Power LimitedInventors: Paul N. Herrmann, Steven Cochren, Sandeep Kumar, Steven Rudko, Stephen P. Radzevich, Matthew Fox, Daniel P. Fisher
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Publication number: 20190301583Abstract: A hydraulic control unit that delivers hydraulic fluid to a limited slip differential includes a hydraulic control unit housing, a sump and a motor. The hydraulic control unit housing has an accumulator housing portion that houses a biasing assembly and a piston. The sump is defined in the hydraulic control unit housing and at least partially occupies a common space with the accumulator housing portion. The motor is configured to pump fluid into an accumulator chamber of the accumulator housing portion. The fluid pumped into the accumulator housing portion at least partially collapses the biasing assembly and introduces a pre-charge into the hydraulic control unit. The biasing assembly is configured to expand and urge the piston in a first direction resulting in fluid being communicated from the hydraulic control unit and into the limited slip differential.Type: ApplicationFiled: June 20, 2019Publication date: October 3, 2019Inventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
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Patent number: 10378633Abstract: A differential gear mechanism can include a differential casing. A first and a second side gear can be rotatably mounted within the differential casing. A pair of pinion gears can be mounted between the first and second side gears. Both of the pinion gears can be rotatably mounted on a cross shaft that is fixed for rotation with the differential casing. A clutch pack can include a plurality of annular plates that are interleaved between a plurality of annular friction disks. The clutch pack can be arranged on a first side of the cross shaft. An actuator assembly can comprise a piston received in a piston housing. The actuator assembly can be configured to actuate the clutch pack. The actuator assembly can be arranged on a second side of the cross shaft, opposite the first side.Type: GrantFiled: March 12, 2018Date of Patent: August 13, 2019Assignee: Eaton CorporationInventor: Daniel P. Fisher
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Patent number: 10330187Abstract: A hydraulic control unit that delivers hydraulic fluid to a limited slip differential includes a hydraulic control unit housing, a sump and a motor. The hydraulic control unit housing has an accumulator housing portion that houses a biasing assembly and a piston. The sump is defined in the hydraulic control unit housing and at least partially occupies a common space with the accumulator housing portion. The motor is configured to pump fluid into an accumulator chamber of the accumulator housing portion. The fluid pumped into the accumulator housing portion at least partially collapses the biasing assembly and introduces a pre-charge into the hydraulic control unit. The biasing assembly is configured to expand and urge the piston in a first direction resulting in fluid being communicated from the hydraulic control unit and into the limited slip differential.Type: GrantFiled: October 11, 2016Date of Patent: June 25, 2019Assignee: Eaton CorporationInventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
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Publication number: 20190143811Abstract: A hydraulic control unit (HCU) assembly, for an electro-hydraulic limited slip differential system for a vehicle, includes a support bracket configured to couple to an underbody of the vehicle in a location remote from a live axle assembly of the vehicle, and an HCU including an integrated accumulator and reservoir assembly, a control valve assembly, and a motor and hydraulic pump assembly. The HCU is coupled to the support bracket.Type: ApplicationFiled: January 14, 2019Publication date: May 16, 2019Applicant: Eaton Intelligent Power LimitedInventors: Andrew N. Edler, Kandice Kawala, Randy Graves, Daniel P. Fisher
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Publication number: 20180209528Abstract: An electro-hydraulic limited slip differential system for a vehicle includes an axle assembly having an axle housing having an aperture formed therein, and an electro-hydraulic limited slip differential assembly disposed within the axle housing. The limited slip differential assembly includes a differential case, a differential gear assembly disposed in the differential case, a clutch assembly having a clutch pack and a clutch actuator assembly, and a hydraulic fitting disposed at least partially within the aperture. The hydraulic fitting is coupled to a hydraulic port of the clutch actuator assembly.Type: ApplicationFiled: March 22, 2018Publication date: July 26, 2018Applicant: Eaton CorporationInventors: Andrew N. Edler, Ashish Wadhva, John St. John, Kandice Kawala, Randy Graves, Daniel P. Fisher
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Publication number: 20180202530Abstract: A differential gear mechanism can include a differential casing. A first and a second side gear can be rotatably mounted within the differential casing. A pair of pinion gears can be mounted between the first and second side gears. Both of the pinion gears can be rotatably mounted on a cross shaft that is fixed for rotation with the differential casing. A clutch pack can include a plurality of annular plates that are interleaved between a plurality of annular friction disks. The clutch pack can be arranged on a first side of the cross shaft. An actuator assembly can comprise a piston received in a piston housing. The actuator assembly can be configured to actuate the clutch pack. The actuator assembly can be arranged on a second side of the cross shaft, opposite the first side.Type: ApplicationFiled: March 12, 2018Publication date: July 19, 2018Inventor: Daniel P. Fisher
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Patent number: 9915333Abstract: A differential gear mechanism incudes a differential casing. A first and a second side gear can be rotatably mounted within the differential casing. A pair of pinion gears can be mounted between the first and second side gears. Both of the pinion gears can be rotatably mounted on a cross shaft that is fixed for rotation with the differential casing. A clutch pack can include a plurality of annular plates that are interleaved between a plurality of annular friction disks. The clutch pack can be arranged on a first side of the cross shaft. An actuator assembly can comprise a piston received in a piston housing. The actuator assembly can be configured to actuate the clutch pack. The actuator assembly can be arranged on a second side of the cross shaft, opposite the first side.Type: GrantFiled: February 5, 2016Date of Patent: March 13, 2018Assignee: Eaton CorporationInventor: Daniel P. Fisher
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Publication number: 20170261085Abstract: A differential includes a differential case; a side gear; a pinion configured for meshing engagement with the side gear; and a pinion housing configured to support the pinion. The pinion housing includes a first face; a second face opposing the first face; a first projection located on the first face; and a second projection located on the second face. The pinion housing also includes an aperture or hole extending radially inwardly from an outer radial surface of the generally annular ring; and a channel extending from the first face to the second face, wherein the channel is substantially radially aligned with the aperture or hole. In embodiments, the pinion housing includes one or more transfer formations configured to transfer torque from the differential case, and the pinion housing is configured to permit movement in an axial direction between a pair of side gears.Type: ApplicationFiled: May 25, 2017Publication date: September 14, 2017Inventors: Paul N. Herrmann, Steven Cochren, Sandeep Kumar, Steven Rudko, Stephen P. Radzevich, Matthew Fox, Daniel P. Fisher
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Publication number: 20170045127Abstract: A hydraulic control unit that delivers hydraulic fluid to a limited slip differential includes a hydraulic control unit housing, a sump and a motor. The hydraulic control unit housing has an accumulator housing portion that houses a biasing assembly and a piston. The sump is defined in the hydraulic control unit housing and at least partially occupies a common space with the accumulator housing portion. The motor is configured to pump fluid into an accumulator chamber of the accumulator housing portion. The fluid pumped into the accumulator housing portion at least partially collapses the biasing assembly and introduces a pre-charge into the hydraulic control unit. The biasing assembly is configured to expand and urge the piston in a first direction resulting in fluid being communicated from the hydraulic control unit and into the limited slip differential.Type: ApplicationFiled: October 11, 2016Publication date: February 16, 2017Inventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
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Publication number: 20160160982Abstract: A hydraulic control unit that delivers hydraulic fluid to a limited slip differential constructed in accordance to the present disclosure can include a hydraulic control unit housing, a motor, a gerotor gear assembly and an interface plate. The hydraulic control unit housing can have a housing mounting surface. The motor can include an output shaft and a motor mounting plate that has a motor mounting surface. The gerotor gear assembly can include an inner and outer gerotor gear. The outer gerotor gear can be formed of a first material having a first coefficient of expansion. The interface plate can be mounted between the housing mounting surface and the motor mounting surface. The interface plate can receive the outer gerotor gear in an interference fit. The interface plate is formed of a second material having a second coefficient of expansion that is substantially equivalent to the first coefficient of expansion.Type: ApplicationFiled: February 16, 2016Publication date: June 9, 2016Inventors: Andrew N. Edler, Daniel P. Fisher, John A. Grogg
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Publication number: 20160153536Abstract: A differential gear mechanism constructed in accordance to one example of the present disclosure can include a differential casing. A first and a second side gear can be rotatably mounted within the differential casing. A pair of pinion gears can be mounted between the first and second side gears. Both of the pinion gears can be rotatably mounted on a cross shaft that is fixed for rotation with the differential casing. A clutch pack can include a plurality of annular plates that are interleaved between a plurality of annular friction disks. The clutch pack can be arranged on a first side of the cross shaft. An actuator assembly can comprise a piston received in a piston housing. The actuator assembly can be configured to actuate the clutch pack. The actuator assembly can be arranged on a second side of the cross shaft, opposite the first side.Type: ApplicationFiled: February 5, 2016Publication date: June 2, 2016Inventor: Daniel P. Fisher
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Publication number: 20160084365Abstract: A cover for a differential housing is disclosed herein. The cover can include a body, a flange, a fluid reservoir, a first fluid conduit, and second fluid conduit. The body can have an inwardly-facing surface and outwardly-facing surface opposite the inwardly-facing surface. The flange can extend about at least a portion of a perimeter of the body. The fluid reservoir can be defined within the body and have a reservoir outlet and a return port. The first fluid conduit can be defined within the body. The first fluid conduit can be spaced from the fluid reservoir and extend between a first inlet and a first outlet. The second fluid conduit can be defined within the body and extend between the first fluid conduit and the return port of the fluid reservoir.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Inventors: Scott M. Besemer, Daniel P. Fisher, Andrew N. Edler, Gregory L. Heatwole
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Patent number: D767636Type: GrantFiled: December 16, 2013Date of Patent: September 27, 2016Assignee: Eaton CorporationInventors: Daniel P. Fisher, Andrew N. Edler
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Patent number: D771147Type: GrantFiled: December 29, 2015Date of Patent: November 8, 2016Assignee: Eaton CorporationInventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
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Patent number: D776719Type: GrantFiled: April 14, 2016Date of Patent: January 17, 2017Assignee: Eaton CorporationInventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
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Patent number: D808432Type: GrantFiled: January 19, 2016Date of Patent: January 23, 2018Assignee: EATON CORPORATIONInventor: Daniel P. Fisher
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Patent number: D819083Type: GrantFiled: January 4, 2017Date of Patent: May 29, 2018Inventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox