Patents by Inventor Larry Pritchard

Larry Pritchard 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).

  • Patent number: 9599215
    Abstract: A hydraulic actuation system (10) and method of assembly for disconnecting a secondary driveline (27) can be used in an all-wheel drive (AWD) vehicle (14) having a power take-off unit (PTU) (42) for transferring rotary power to the secondary driveline (27).
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: March 21, 2017
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thad Kopp, Keith Feldt, Mark Buchanan, Peizhang Tu
  • Patent number: 9593725
    Abstract: A self-adjusting clutch (10) can include an automatic adjustment mechanism (20) for decreasing an axial dimension within a clutch pack (14). The adjustment can compensate for wear of the facing surfaces of interposed members located within the clutch pack (14), resulting from repeated engaging and disengaging under a clutch apply load within the clutch (10). The adjustment mechanism (20) can include a reaction plate (12) normally biased toward the clutch pack (14) by a plurality of first springs (22). The adjustment mechanism (20) can further include a plurality of pawls (24) supported for rotation by the reaction plate (12) and biased by a plurality of second springs (26) toward a locking position with respect to a ring member (36). The plurality of pawls (24) can lock the reaction plate (12) against axial movement in a direction of the clutch apply load during clutch actuation.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: March 14, 2017
    Assignee: BorgWarner Inc.
    Inventor: Larry A. Pritchard
  • Publication number: 20170051827
    Abstract: A transfer case for a motor vehicle. An input is rotatable about an axis to receive torque, an output is rotatable about the axis to transmit torque, and a planetary gear set is rotatable about the axis and operatively coupled between the input and the output. A shift sleeve circumscribes and is axially slidably carried along the axis, and a shift sleeve lock is automatically engageable with the shift sleeve responsive to the transfer case exceeding a predetermined rotational speed, to prevent axial movement of the shift sleeve above that speed. A related method is also provided.
    Type: Application
    Filed: October 31, 2016
    Publication date: February 23, 2017
    Inventors: Larry A. Pritchard, Earl David Ray
  • Publication number: 20170050508
    Abstract: An electric drive unit for a powertrain system including first and second drivelines and a primary propulsion system for translating rotational torque to the first driveline. A motor acts to generate rotational torque and a pinion is disposed in selective communication therewith. A differential is interposed between the pinion and the second driveline of for splitting torque therebetween. A first planetary is disposed between the motor and pinion, and a second planetary is disposed between the first planetary and pinion. A dog clutch interposed between the pinion and the planetaries is movable between a first position wherein torque from the motor is translated through the first planetary and the dog clutch to drive the second driveline at a first drive ratio, and a second position wherein torque from the motor is translated through both planetaries and the dog clutch to drive the second driveline at a second drive ratio.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: BORGWARNER INC.
    Inventors: Larry Pritchard, Thaddeus Kopp
  • Patent number: 9566857
    Abstract: An electric drive unit for a powertrain system including first and second drivelines and a primary propulsion system for translating rotational torque to the first driveline. A motor acts to generate rotational torque and a pinion is disposed in selective communication therewith. A differential is interposed between the pinion and the second driveline of for splitting torque therebetween. A first planetary is disposed between the motor and pinion, and a second planetary is disposed between the first planetary and pinion. A dog clutch interposed between the pinion and the planetaries is movable between a first position wherein torque from the motor is translated through the first planetary and the dog clutch to drive the second driveline at a first drive ratio, and a second position wherein torque from the motor is translated through both planetaries and the dog clutch to drive the second driveline at a second drive ratio.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 14, 2017
    Assignee: BorgWarner Inc.
    Inventors: Larry Pritchard, Thaddeus Kopp
  • Publication number: 20170037961
    Abstract: A transfer case for a motor vehicle. An input is rotatable about an axis to receive torque, an output is rotatable about the axis to transmit torque, and a planetary gear set is rotatable about the axis and operatively coupled between the input and the output. A shift sleeve circumscribes and is axially slidably carried along the axis, and a shift sleeve lock is automatically engageable with the shift sleeve responsive to the transfer case exceeding a predetermined rotational speed, to prevent axial movement of the shift sleeve above that speed. A related method is also provided.
    Type: Application
    Filed: August 6, 2015
    Publication date: February 9, 2017
    Inventors: Larry A. Pritchard, Earl David Ray
  • Publication number: 20170001518
    Abstract: A transfer case (26) for translating rotational torque from an engine (22) to first and second differentials (34, 36). A primary shaft (50) is supported in a housing (48) and has an input in communication with the engine (22) and an output in communication with the first differential (34). A secondary shaft (52) is disposed in communication with the second differential (36). A clutch (54) selectively translates torque between the shafts (50, 52) and moves between a first position (54A) wherein torque is translated to the secondary shaft (52), and a second position (54B) wherein torque is interrupted. An actuator (64) with a piston (68) movably supported in a cylinder (66) moves the clutch (54). A lock (70) moves between a locked configuration (70A) engaging the piston (68) to prevent the clutch (54) from moving, and an unlocked configuration (70B) releasing the piston (68) allowing the clutch (54) to move.
    Type: Application
    Filed: June 23, 2016
    Publication date: January 5, 2017
    Inventor: Larry A. PRITCHARD
  • Patent number: 9534665
    Abstract: A number of variations may include a product that may include an axle assembly with an electrical machine that may be interconnected with the axle assembly. A power transfer unit may be connected between the electrical machine and the axle assembly. The power transfer unit may include a planetary gear set and may include an engagement mechanism that in combination may provide a low range, a neutral mode and a high range between the electrical machine and the axle assembly. A first gear set may be engaged between the electrical machine and the power transfer unit and a second gear set may be engaged between the power transfer unit and the axle assembly.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 3, 2017
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Patent number: 9517691
    Abstract: A product may include an engine, and a transmission driven by the engine. An axle assembly may be driven by the engine through the transmission. An electrical machine may be connected to the axle assembly. The electrical machine may selectively drive the axle assembly and may be selectively drivable by the engine through the transmission and the axle assembly. A power transfer unit may be engaged between the electrical machine and the axle assembly.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: December 13, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Patent number: 9518623
    Abstract: An axle disconnect assembly for translating rotational torque between an output shaft and an axle shaft of a vehicle driveline; including: disconnect housing and a clutch supported therein. The clutch is disposed in selective torque translating relationship between the output shaft and the axle shaft, and is movable between: an engaged configuration wherein torque is translated between the output shaft and the axle shaft; and a disengaged configuration wherein torque is interrupted between the shafts. An electromagnetic actuator is provide and has a slider selectively movable between a first stable position and a second stable position. The actuator is disposed in force translating relationship with the clutch such that movement from one stable position to the other stable position causes corresponding movement of the clutch between the configurations so as to selectively translate rotational torque between the output shaft and the axle shaft.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: December 13, 2016
    Assignee: BorgWarner Inc.
    Inventors: Joseph D. Mastie, Larry A. Pritchard
  • Patent number: 9475385
    Abstract: A transfer case comprising an input shaft and a first output shaft sharing a primary axis of rotation; a second output shaft offset from the first output shaft; a range shifter comprising a first cam constructed and arranged to selectively shift a vehicle to a high-range drive mode, a low range drive mode, or a neutral drive mode; a mode shifter comprising a second cam constructed and arranged to actuate a synchronizer which selectively shifts the vehicle between a two-wheel drive and a four-wheel drive mode; and a dual drive gear interposed between the range shifter and the mode shifter which is rotatable to actuate the first cam and the second cam.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 25, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Branden Reeves, Mallikarjun Rudagi
  • Patent number: 9463691
    Abstract: A number of variations may include a transfer case comprising an input shaft and a first output shaft sharing a primary axis of rotation; a second output shaft offset from the first output shaft; a range shifter comprising a first cam constructed and arranged to selectively shift a vehicle to a high-range drive mode, a low range drive mode, or a neutral drive mode; a mode shifter comprising a second cam constructed and arranged to actuate a synchronizer which selectively shifts the vehicle between a two-wheel drive mode and a four-wheel drive mode a gear train having a first axis offset from the primary axis, and a reversible electric motor which drives the gear train wherein direction of the rotation of the electric motor determines engagement or disengagement of the mode shifter to selectively shift the vehicle between the two-wheel drive mode and the four-wheel drive mode.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: October 11, 2016
    Assignee: BorgWarner Inc.
    Inventors: Joseph D. Mastie, Larry A. Pritchard, Mallikarjun Rudagi
  • Patent number: 9453564
    Abstract: A number of variations may include a product that may include a power transfer assembly. A gear train may have multiple gears and may provide a first stage gearing that may have a fixed gear ratio. At least one planetary gear set may provide a second stage gearing that may have multiple gear ratios. An electric machine may selectively provide input to the first stage gearing. A differential unit may selectively receive output from the planetary gear set. An engagement mechanism may selectively connect the differential unit with the second stage gearing in each of a high range mode and a low range mode.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: September 27, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus R. Kopp
  • Patent number: 9447873
    Abstract: A transfer case (30) and a method of assembly can include a range shifting assembly (60) and a clutch assembly (80) located axially adjacent to one another along a common primary axis. An actuating device (32) can include a concentric gear located coaxially interposed between the range shifting assembly (60) and the clutch assembly (80) for rotation about the common primary axis. The concentric gear (48) can actuate the range shifting assembly (60) during a portion of angular rotation about the common primary axis and can actuate the clutch assembly (80) during a mutually exclusive portion of angular rotation about the common primary axis. The actuating device (32) can include a barrel cam (59), a plurality of springs engageable between the barrel cam (59) and the concentric gear (48), and a shift fork (68) operably engageable with a cam surface groove (57) for guided axial movement to actuate the range shifting assembly (60) between a low-range and high-range drive mode.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: September 20, 2016
    Assignee: BorgWarner, Inc.
    Inventor: Larry A. Pritchard
  • Publication number: 20160265601
    Abstract: An axle disconnect assembly for translating rotational torque between an output shaft and an axle shaft of a vehicle driveline; including: disconnect housing and a clutch supported therein. The clutch is disposed in selective torque translating relationship between the output shaft and the axle shaft, and is movable between: an engaged configuration wherein torque is translated between the output shaft and the axle shaft; and a disengaged configuration wherein torque is interrupted between the shafts. An electromagnetic actuator is provide and has a slider selectively movable between a first stable position and a second stable position. The actuator is disposed in force translating relationship with the clutch such that movement from one stable position to the other stable position causes corresponding movement of the clutch between the configurations so as to selectively translate rotational torque between the output shaft and the axle shaft.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventors: Joseph D. Mastie, Larry A. Pritchard
  • Publication number: 20160265602
    Abstract: A wheel-end disconnect assembly for translating rotational torque between an output shaft and a wheel hub of a vehicle driveline. A knuckle bracket at least partially supports the wheel hub. A clutch is operatively attached to the knuckle bracket, is disposed in selective torque translating relationship between the output shaft and the wheel hub, and is movable between: an engaged configuration wherein torque is translated between the output shaft and the wheel hub, and a disengaged configuration wherein torque is interrupted. An electromagnetic actuator is provided and has a slider selectively movable between a first stable position and a second stable position. The actuator is disposed in force translating relationship with the clutch such that movement from one stable position to the other stable position causes corresponding movement of the clutch between the configurations so as to selectively translate rotational torque between the output shaft and the wheel hub.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 15, 2016
    Inventor: Larry A. PRITCHARD
  • Publication number: 20160265600
    Abstract: A disconnect assembly for translating torque to shafts of a driveline. A clutch is disposed in torque translating relationship between the shafts and is movable between an engaged configuration wherein torque is translated, and a disengaged configuration wherein torque is interrupted. An actuator includes a coil that generates a first magnetic field. A slider is movable between a first stable position and a second stable position, with an armature operatively attached to the slider. The armature has a magnetic polarity pattern defined by a plurality of north and south magnetic pole regions facing the coil. The pattern configured such that predetermined changes in the magnetic field generated by the coil urge the slider from one of the stable positions to the other of the stable positions so as to cause corresponding movement of the clutch assembly between the configurations to selectively translate rotational torque between the shafts of the driveline.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 15, 2016
    Inventors: Larry A. PRITCHARD, Thaddeus Kopp
  • Patent number: 9440640
    Abstract: A number of variation may include a method that may include providing a drive system that may deliver a torque supply to a vehicle. An electric unit may be provided. The torque supply may be reduced. A torque fill may be initiated when the torque supply is reduced. The torque fill may be supplied from the electric unit.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: September 13, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus R. Kopp
  • Patent number: 9410610
    Abstract: A product may include a differential unit, and an electrical machine may be interconnected with the differential unit. The differential unit and the electrical machine may be lubricated by a fluid. A reservoir may be defined above the electrical machine. The reservoir may receive the fluid during operation of the differential unit and may selectively store and release the fluid.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 9, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Publication number: 20160221448
    Abstract: A number of variations include a product comprising a transfer case comprising a hydraulic system comprising a hydraulic fluid and a hydraulic pump or hydraulic motor wherein the hydraulic system is constructed and arranged to capture energy from regenerative braking of the at least one brake of at least one drive.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Inventor: Larry A. PRITCHARD