Patents by Inventor Christopher G. Baillie
Christopher G. Baillie 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: 12103382Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The axle housing including a first gearbox, a second gearbox and a cradle assembly coupling the first gear box to the second gear box. The axle assembly includes first and second hub assemblies that form a first axis of rotation. The first gearbox includes an electric motor that is coupled to a transmission used to rotate an output shaft. The first gearbox also includes a differential mounted for rotation with the transmission and a first drop box mounted for rotation with the differential. The axle assembly also includes a portal axle mounted for rotation with the first drop box and extends from the first gearbox to the second gearbox wherein the portal axle forms a second axis of rotation that is offset from the first axis of rotation of the hub assemblies.Type: GrantFiled: November 22, 2022Date of Patent: October 1, 2024Assignee: Allison Transmission, Inc.Inventors: Shaun Mepham, Christopher G. Baillie
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Patent number: 12103373Abstract: An electrified axle assembly includes a first and second motor, a first and second idler shaft, and one or more output shafts mechanically engaged with the first and/or second idler shafts and one or more axles. In some embodiments, the electrified axle assembly may include two output shafts, with each output shaft meshed with a corresponding one of the idler shafts and a corresponding one of the axles. In other embodiments, the electrified axle assembly may include a single output shaft meshed with each of the idler shaft and each axle. Additional single motor and single and dual speed embodiments are also disclosed.Type: GrantFiled: March 22, 2022Date of Patent: October 1, 2024Assignee: Allison Transmission, Inc.Inventors: Shaun Mepham, Christopher G. Baillie, James A. Raszkowski
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Patent number: 12090858Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The drive unit includes an axle shaft, a wheel end assembly, an electric machine, and a transmission unit. The axle shaft extends along an axle centerline axis between a first axle end and a second axle end. The wheel end assembly is coupled to the first axle end. The electric machine is positioned within the axle housing and includes a rotor shaft, a drive pinion coupled to the rotor shaft, and an electric motor for rotating the rotor shaft. The rotor shaft extends along a rotor shaft centerline axis that is orientated parallel to the axle centerline axis. The transmission unit is positioned within the axle housing and is configured to transfer torque from the electric machine to the axle shaft.Type: GrantFiled: April 5, 2022Date of Patent: September 17, 2024Assignee: Allison Transmission, Inc.Inventors: Vikram Chopra, Christopher G. Baillie, Shaun Mepham
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Patent number: 11845329Abstract: An electric axle assembly includes a drive housing and a drive assembly. The drive assembly is housed in the drive housing and engages with wheels of a vehicle for rotating the wheels to move the vehicle along a ground surface. The drive assembly includes a drive input, one or more gearsets, and axle shafts. The one or more gearsets transfer motive force from the drive input to the axle shafts.Type: GrantFiled: August 2, 2022Date of Patent: December 19, 2023Assignee: Allison Transmission, Inc.Inventors: Vikram Chopra, Christopher G. Baillie, Siva Srinivas Rajeev Mupparti
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Patent number: 11820217Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly also includes a drive unit housing that includes an interior cavity enclosing first and second electric machines, a common gear reduction, a differential gear set, and a speed change mechanism with the first and second axle shafts partially disposed within the interior cavity and extending out of the drive unit housing. The drive unit housing includes a central cavity, a lower cavity, a first machine cavity, and a second machine cavity. The central cavity includes the common gear reduction and the axis of rotation of the first and second axle shafts. The lower cavity accumulates a volume of gearbox fluid with the speed change mechanism at least partially immersed in the lower cavity. The first machine cavity includes the first electric machine and the second machine cavity includes the second electric machine.Type: GrantFiled: August 2, 2022Date of Patent: November 21, 2023Assignee: Allison Transmission, Inc.Inventors: Christopher G. Baillie, Vikram Chopra, Shaun Mepham, Siva Srinivas Rajeev Mupparti
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Patent number: 11820216Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly includes a first axle shaft and a second axle shaft orientated along a first axis of rotation. A first electric machine is orientated along a second axis of rotation and a second electric machine is spaced from the first electric machine and orientated along a third axis of rotation. A differential gear set is disposed about the first axis of rotation and is coupled to and driven by a common gear reduction to transfer rotational torque from the first and second electric machines to the first and second axle shafts. A speed change mechanism is coupled between the common gear reduction and the differential gear set to change the rotational torque transferred to the first and second axle shafts.Type: GrantFiled: May 3, 2022Date of Patent: November 21, 2023Assignee: Allison Transmission, Inc.Inventors: Vikram Chopra, Shaun Mepham, Christopher G. Baillie, Siva Srinivas Rajeev Mupparti
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Publication number: 20230081161Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The axle housing including a first gearbox, a second gearbox and a cradle assembly coupling the first gear box to the second gear box. The axle assembly includes first and second hub assemblies that form a first axis of rotation. The first gearbox includes an electric motor that is coupled to a transmission used to rotate an output shaft. The first gearbox also includes a differential mounted for rotation with the transmission and a first drop box mounted for rotation with the differential. The axle assembly also includes a portal axle mounted for rotation with the first drop box and extends from the first gearbox to the second gearbox wherein the portal axle forms a second axis of rotation that is offset from the first axis of rotation of the hub assemblies.Type: ApplicationFiled: November 22, 2022Publication date: March 16, 2023Inventors: Shaun MEPHAM, Christopher G. BAILLIE
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Patent number: 11560017Abstract: An axle assembly for a vehicle. A movable housing is movably positioned within a closed channel defined by a central housing. The movable housing moves the axle assembly between a retracted configuration and an extended configuration. A mounting assembly may be coupled to and spaced from the movable housing and slidably positioned adjacent the central housing. A steering actuator is coupled to a steering arm and the mounting assembly such that the steering actuator moves as a unit. A track assist bracket may be fixedly coupled to the central housing and define a gap sized to slidably receive a mounting plate of the mounting assembly. A bushing may be disposed on each wall of a telescoping portion of the movable housing. A bellows may be provided to enclose exposed portions of the bushings in the extended configuration. Methods of adjusting the track of the axle assembly are also disclosed.Type: GrantFiled: July 12, 2018Date of Patent: January 24, 2023Assignee: AxleTech International IP Holdings, LLCInventors: Amy Danielle Langlitz, Christopher G. Baillie, Jay DeVeny, Wallace F. Bisoski
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Publication number: 20220402344Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly includes a first axle shaft and a second axle shaft orientated along a first axis of rotation. A first electric machine is orientated along a second axis of rotation and a second electric machine is spaced from the first electric machine and orientated along a third axis of rotation. A differential gear set is disposed about the first axis of rotation and is coupled to and driven by a common gear reduction to transfer rotational torque from the first and second electric machines to the first and second axle shafts. A speed change mechanism is coupled between the common gear reduction and the differential gear set to change the rotational torque transferred to the first and second axle shafts.Type: ApplicationFiled: May 3, 2022Publication date: December 22, 2022Inventors: Vikram CHOPRA, Shaun MEPHAM, Christopher G. BAILLIE, Siva Srinivas Rajeev MUPPARTI
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Publication number: 20220371436Abstract: An electric axle assembly includes a drive housing and a drive assembly. The drive assembly is housed in the drive housing and engages with wheels of a vehicle for rotating the wheels to move the vehicle along a ground surface. The drive assembly includes a drive input, one or more gearsets, and axle shafts. The one or more gearsets transfer motive force from the drive input to the axle shafts.Type: ApplicationFiled: August 2, 2022Publication date: November 24, 2022Inventors: Vikram CHOPRA, Christopher G. BAILLIE, Siva Srinivas Rajeev MUPPARTI
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Patent number: 11505061Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The axle housing including a first gearbox, a second gearbox and a cradle assembly coupling the first gear box to the second gear box. The axle assembly includes first and second hub assemblies that form a first axis of rotation. The first gearbox includes an electric motor that is coupled to a transmission used to rotate an output shaft. The first gearbox also includes a differential mounted for rotation with the transmission and a first drop box mounted for rotation with the differential. The axle assembly also includes a portal axle mounted for rotation with the first drop box and extends from the first gearbox to the second gearbox wherein the portal axle forms a second axis of rotation that is offset from the first axis of rotation of the hub assemblies.Type: GrantFiled: May 10, 2019Date of Patent: November 22, 2022Assignee: Allison Transmission, Inc.Inventors: Shaun Mepham, Christopher G. Baillie
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Publication number: 20220363115Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly also includes a drive unit housing that includes an interior cavity enclosing first and second electric machines, a common gear reduction, a differential gear set, and a speed change mechanism with the first and second axle shafts partially disposed within the interior cavity and extending out of the drive unit housing. The drive unit housing includes a central cavity, a lower cavity, a first machine cavity, and a second machine cavity. The central cavity includes the common gear reduction and the axis of rotation of the first and second axle shafts. The lower cavity accumulates a volume of gearbox fluid with the speed change mechanism at least partially immersed in the lower cavity. The first machine cavity includes the first electric machine and the second machine cavity includes the second electric machine.Type: ApplicationFiled: August 2, 2022Publication date: November 17, 2022Inventors: Christopher G. BAILLIE, Vikram CHOPRA, Shaun MEPHAM, Siva Srinivas Rajeev MUPPARTI
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Publication number: 20220297520Abstract: An electrified axle assembly includes a first and second motor, a first and second idler shaft, and one or more output shafts mechanically engaged with the first and/or second idler shafts and one or more axles. In some embodiments, the electrified axle assembly may include two output shafts, with each output shaft meshed with a corresponding one of the idler shafts and a corresponding one of the axles. In other embodiments, the electrified axle assembly may include a single output shaft meshed with each of the idler shaft and each axle. Additional single motor and single and dual speed embodiments are also disclosed.Type: ApplicationFiled: March 22, 2022Publication date: September 22, 2022Inventors: Shaun Mepham, Christopher G. Baillie, James A. Raszkowski
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Patent number: 11400807Abstract: An electric axle assembly includes a drive housing and a drive assembly. The drive assembly is housed in the drive housing and engages with wheels of a vehicle for rotating the wheels to move the vehicle along a ground surface. The drive assembly includes a drive input, one or more gearsets, and axle shafts. The one or more gearsets transfer motive force from the drive input to the axle shafts.Type: GrantFiled: August 16, 2019Date of Patent: August 2, 2022Assignee: Allison Transmission, Inc.Inventors: Vikram Chopra, Christopher G. Baillie, Siva Srinivas Rajeev Mupparti
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Patent number: 11400755Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly also includes a drive unit housing that includes an interior cavity enclosing first and second electric machines, a common gear reduction, a differential gear set, and a speed change mechanism with the first and second axle shafts partially disposed within the interior cavity and extending out of the drive unit housing. The drive unit housing includes a central cavity, a lower cavity, a first machine cavity, and a second machine cavity. The central cavity includes the common gear reduction and the axis of rotation of the first and second axle shafts. The lower cavity accumulates a volume of gearbox fluid with the speed change mechanism at least partially immersed in the lower cavity. The first machine cavity includes the first electric machine and the second machine cavity includes the second electric machine.Type: GrantFiled: February 19, 2019Date of Patent: August 2, 2022Assignee: Allison Transmission, Inc.Inventors: Christopher G. Baillie, Vikram Chopra, Shaun Mepham, Siva Srinivas Rajeev Mupparti
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Publication number: 20220227219Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The drive unit includes an axle shaft, a wheel end assembly, an electric machine, and a transmission unit. The axle shaft extends along an axle centerline axis between a first axle end and a second axle end. The wheel end assembly is coupled to the first axle end. The electric machine is positioned within the axle housing and includes a rotor shaft, a drive pinion coupled to the rotor shaft, and an electric motor for rotating the rotor shaft. The rotor shaft extends along a rotor shaft centerline axis that is orientated parallel to the axle centerline axis. The transmission unit is positioned within the axle housing and is configured to transfer torque from the electric machine to the axle shaft.Type: ApplicationFiled: April 5, 2022Publication date: July 21, 2022Inventors: Vikram CHOPRA, Christopher G. BAILLIE, Shaun MEPHAM
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Patent number: 11318828Abstract: An axle assembly for frame rail vehicles is described herein. The axle assembly includes a first axle shaft and a second axle shaft orientated along a first axis of rotation. A first electric machine is orientated along a second axis of rotation and a second electric machine is spaced from the first electric machine and orientated along a third axis of rotation. A differential gear set is disposed about the first axis of rotation and is coupled to and driven by a common gear reduction to transfer rotational torque from the first and second electric machines to the first and second axle shafts. A speed change mechanism is coupled between the common gear reduction and the differential gear set to change the rotational torque transferred to the first and second axle shafts.Type: GrantFiled: February 19, 2019Date of Patent: May 3, 2022Assignee: ALLISON TRANSMISSION, INC.Inventors: Vikram Chopra, Shaun Mepham, Christopher G. Baillie, Siva Srinivas Rajeev Mupparti
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Patent number: 11292332Abstract: An axle assembly for a low floor vehicle is described herein. The axle assembly includes an axle housing and a drive unit for driving a wheel assembly. The drive unit includes an axle shaft, a wheel end assembly, an electric machine, and a transmission unit. The axle shaft extends along an axle centerline axis between a first axle end and a second axle end. The wheel end assembly is coupled to the first axle end. The electric machine is positioned within the axle housing and includes a rotor shaft, a drive pinion coupled to the rotor shaft, and an electric motor for rotating the rotor shaft. The rotor shaft extends along a rotor shaft centerline axis that is orientated parallel to the axle centerline axis. The transmission unit is positioned within the axle housing and is configured to transfer torque from the electric machine to the axle shaft.Type: GrantFiled: July 12, 2018Date of Patent: April 5, 2022Assignee: ALLISON TRANSMISSION, INC.Inventors: Shaun Mepham, Vikram Chopra, Christopher G. Baillie
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Publication number: 20220045577Abstract: An electric motor for use in an axle assembly. The electric motor includes a stator having a stator core, and a rotor adapted for rotation about a rotor axis within the stator core. The stator includes a series of conductive windings that are disposed about the stator core. The windings are wound in a direction generally parallel to the rotor axis and protrude from first and second ends of the stator core. The stator core is formed to include a plurality of longitudinal passageways that are radially arranged about the stator core and are adapted to permit the flow of a cooling fluid through the passageways. The passageways of the stator core extend longitudinally through the stator core and are positioned between the windings such that heat generated by the windings is transferred to the cooling fluid to remove heat from the windings. The motor also includes a metering ring coupled to a first end of the stator core and a discharge ring coupled to a second end of the stator core.Type: ApplicationFiled: September 27, 2019Publication date: February 10, 2022Inventors: Christopher G. BAILLIE, Shaun MEPHAM
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Publication number: 20210379983Abstract: An electric axle assembly includes a drive unit and a drive train stored in a case, and a cooling system coupled to the case for circulating a cooling fluid through the case. The electric axle assembly is mounted on a vehicle to support the vehicle for movement along a ground surface. The drive unit provides motive force through the drive train to wheels of the vehicle for propelling the vehicle along the ground.Type: ApplicationFiled: September 27, 2019Publication date: December 9, 2021Inventors: Christopher G. BAILLIE, Shaun MEPHAM