Patents by Inventor James M. Hart

James M. Hart 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).

  • Multi-speed transmission having stacked planetary gear sets
    Patent number: 8801565
    Abstract: A transmission is has an input member, an output member, a first planetary gear set assembly, a second planetary gear set assembly, a plurality of coupling members and a plurality of torque transmitting devices. The second planetary gear set assembly is a stacked planetary gear set having a first, a second, a third, a fourth and a fifth member and the first planetary gear set assembly has a first, a second, a third and a fourth member. The torque transmitting devices include clutches and brakes.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: August 12, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: James M. Hart, Scott H. Wittkopp, James B. Borgerson
  • TRANSMISSION-INTEGRATED ELECTROMECHANICAL DEVICE
    Publication number: 20140221142
    Abstract: A transmission assembly for use in a motor vehicle is provided. The transmission assembly has a case for housing components of the transmission and an electromechanical device operable to convert mechanical energy to electrical energy. The electromechanical device is disposed within the transmission case. The case may have a main housing portion and a bell housing portion, with the electromechanical device housed in the main housing portion, in some variations. A transmission shaft may be rotatably supported within the case and configured to be connected to an engine of the motor vehicle. A connecting device may continuously interconnect the electromechanical device with the transmission shaft.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: James B. Borgerson, Daryl A. Wilton, Edward W. Mellet, James M. Hart
  • TRANSMISSION WITH DOG CLUTCH BRAKE
    Publication number: 20140221149
    Abstract: A transmission is provided having a housing, a plurality of planetary gear sets, a structural member, a sprocket member, a first dog clutch member, a second dog clutch member, and a biasing member. The structural member is secured to the housing and includes a plurality of splines and defines a cavity. The sprocket member is rotationally supported by the structural member. The first dog clutch member is disposed in the cavity of the structural member and includes splines and dogteeth. The splines are engaged with the splines of the structural member. The second dog clutch member includes dogteeth that are aligned with the dogteeth of the first dog clutch member. The biasing member is disposed between the structural member and the first dog clutch member.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Daryl A. Wilton, James M. Hart, James B. Borgerson, Edward W. Mellet
  • Multi-speed transmission
    Patent number: 8795128
    Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include three clutches and four brakes actuatable in combinations of three to establish a plurality of forward gear ratios and one reverse gear ratio.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: August 5, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Edward W. Mellet, James M. Hart
  • Automatic transmission with integrated engine starter, remote mounted pump and drive system
    Patent number: 8795116
    Abstract: An automatic transmission includes a plurality of planetary gear assemblies, an integrated starter, a remote mounted hydraulic pump and a common drive system. An input shaft of the automatic transmission is coupled to and drives a ring (spur) gear. In one portion of the automatic transmission, a starter motor is disposed and includes gear teeth on an output shaft that engage a pinion gear that, in turn, engages the input shaft ring gear. In another portion of the automatic transmission, preferably the lower portion, an off axis hydraulic pump includes a drive shaft and driven gear which also engages the input shaft ring gear.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: August 5, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Daryl A. Wilton, James M. Hart
  • Hybrid powertrain for a motor vehicle
    Patent number: 8795113
    Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: August 5, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Edwin T. Grochowski, James M. Hart
  • AUTOMATIC TRANSMISSION WITH INTEGRATED ENGINE STARTER, REMOTE MOUNTED PUMP AND DRIVE SYSTEM
    Publication number: 20140213402
    Abstract: An automatic transmission includes a plurality of planetary gear assemblies, an integrated starter, a remote mounted hydraulic pump and a common drive system. An input shaft of the automatic transmission is coupled to and drives a ring (spur) gear. In one portion of the automatic transmission, a starter motor is disposed and includes gear teeth on an output shaft that engage a pinion gear that, in turn, engages the input shaft ring gear. In another portion of the automatic transmission, preferably the lower portion, an off axis hydraulic pump includes a drive shaft and driven gear which also engages the input shaft ring gear.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Daryl A. Wilton, James M. Hart
  • Multi-speed transmission
    Patent number: 8777797
    Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include three clutches and three brakes actuatable in combinations of three to establish each of ten forward gear ratios and one reverse gear ratio.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: July 15, 2014
    Assignee: GM Global Technology Operations, LLC.
    Inventors: Edward W. Mellet, Andrew W. Phillips, James M. Hart
  • Ten-speed transmission
    Patent number: 8777798
    Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: July 15, 2014
    Assignee: GM Global Technology Operations, LLC.
    Inventors: James B. Borgerson, James M. Hart, Edward W. Mellet
  • Multiple speed transmission having a band brake
    Patent number: 8758189
    Abstract: An automatic transmission includes an input shaft or member, an output shaft or member and three simple and one compound planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The input shaft or member is coupled to the sun gear of the second planetary gear assembly and the output shaft is coupled to the planet gear carrier of the fourth planetary gear assembly. The transmission also includes six torque transmitting devices: one band brake, three friction brakes and two friction clutches.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: James M. Hart, Daryl A. Wilton
  • Multi-speed transmission
    Patent number: 8758186
    Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Edward W. Mellet, James B. Borgerson, James M. Hart
  • Multi-speed transmission
    Patent number: 8758185
    Abstract: A transmission is provided having an input member, an output member, a planetary gear set assembly, two planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members and the planetary gear set assembly includes first, second, third and fourth members. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish a plurality of forward gear ratios and one reverse gear ratio.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Edward W. Mellet, James M. Hart
  • Multi-speed transmission
    Patent number: 8758187
    Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least nine forward gear ratios and one reverse gear ratio.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Edward W. Mellet, James M. Hart, Andrew W. Phillips
  • MULTI-SPEED TRANSMISSION
    Publication number: 20140162830
    Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and a brake actuatable in combinations of four to establish a plurality of forward gear ratios and at least one reverse gear ratio.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 12, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Edward W. Mellet, James M. Hart, Daryl A. Wilton
  • Transmission with dual clutch actuation assembly
    Patent number: 8734285
    Abstract: A vehicle transmission includes an input member, an output member, a plurality of gear sets, first and second clutches, first and second actuators, and first and second bearings. The plurality of gear sets is disposed between the input member and the output member. The first and second clutches are selectively engaged to rotationally couple first and second pairs of the plurality of gear sets. The first and second actuators each have a stationary cylinder bore and a piston disposed in the stationary cylinder bore, where the pistons are substantially rotationally stationary. The first bearing is disposed between the first clutch and the nonrotating piston of the first actuator and the second bearing is disposed between the second clutch and the nonrotating piston of the second actuator.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: May 27, 2014
    Assignee: GM Global Technology Operations
    Inventors: Daryl A. Wilton, James M. Hart
  • Reversible gerotor pump
    Patent number: 8734140
    Abstract: A reversible gerotor pump for a machine having a drive shaft is provided, the pump including a housing, an offset ring, and an inner and outer gear. The offset ring is disposed in the housing and includes a tab extending radially from an outer periphery. The outer periphery of the offset ring defines a first axis in common with the axis of a drive shaft. The inner periphery of the offset ring defines a second axis that is slightly offset from the second axis. The axis of the outer gear moves relative to the axis of the inner gear to allow pumping action in both rotational directions using the same suction and line cavities for both directions.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 27, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Daryl A. Wilton, James M. Hart, John C. Schultz, David R. Staley
  • SYNCHRONIZING DISCONNECT DEVICE
    Publication number: 20140141925
    Abstract: A transmission includes an input member, an output member, a set of four planetary gear sets each having first, second, and third members, a plurality of torque transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members with at least one other of the first, second, third members and a stationary member, and a synchronizer assembly that selectively connects and disconnects one member of one of the planetary gear sets.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: James M. Hart, Daryl A. Wilton, Clinton E. Carey
  • TRANSMISSION WITH BAND CLUTCH
    Publication number: 20140141926
    Abstract: A transmission is provided having a housing, a plurality of planetary gear sets, a structural member, a sprocket member, an annular drum, a band, and an actuator. The sprocket member is rotationally supported by the structural member. The annular drum is adjacent the structural member and is continuously rotationally coupled with a member of the one of the plurality of planetary gear sets. The band circumscribes the annular drum and includes at least a first position and a second position. In the first position the band is substantially separated from the drum and in the second position the band contacts the drum. The actuator selectively positions the band between at least the first position and the second position to transfer torque between the structural member and the annular drum.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: James M. Hart, Daryl A. Wilton, Edward W. Mellet, Elizabeth I. Wooden
  • Multi-speed transmission
    Patent number: 8721488
    Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 13, 2014
    Assignee: GM Global Technology Operations
    Inventors: Edward W. Mellet, James B. Borgerson, James M. Hart
  • MULTI-SPEED TRANSMISSION
    Publication number: 20140128209
    Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and a brake actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 8, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Andrew W. Phillips, Clinton E. Carey, James M. Hart, Scott H. Wittkopp