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: 9400034
    Abstract: A product may include a differential unit that may be engaged with first and second axle shafts that may be driven from a common gear. An electrical machine may be positioned on a first side of the differential unit. A first shaft may extend from the electrical machine and into the differential unit. A power transfer unit may be positioned on a second side of the differential unit opposite the first side. A second shaft may extend into each of the differential unit and the power transfer unit. The first and second shafts may be rotationally engageable through the power transfer unit.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: July 26, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Publication number: 20160207396
    Abstract: A product may comprise an electric machine, and may include first and second shafts connectable to the electric machine in torque a transferring relationship. A first clutch assembly may selectively connect the electric machine with the first shaft and a second clutch assembly may selectively connect the electric machine with the second shaft. A gear set may be operatively engageable between the electric machine and the first and second clutch assemblies. An engagement coupling may connect the gear set in a high range between the electric machine and the first and second clutch assemblies, and the engagement coupling may connect the gear set in a low range between electric machine and the first and second clutch assemblies.
    Type: Application
    Filed: August 12, 2015
    Publication date: July 21, 2016
    Inventors: LARRY A. PRITCHARD, Thaddeus Kopp, Keith Feldt
  • Publication number: 20160195144
    Abstract: A rotary coupling (200) for an all-wheel drive vehicle includes a housing (210), an input part (212), an output part (214), and a clutch (220) disposed within a clutch area (222) of the housing (210) and is movable between an engaged position and a disengaged position to change an amount of torque transferred from the input part (212) to the output part (214). A fluid reservoir (260) is defined in the housing (210). A lubrication valve (250) is movable between an open position and a closed position for controlling supply of a fluid from the fluid reservoir (260) to the clutch area (222) of the housing (210). An actuator (238) is connected to the clutch (220) to move the clutch (220) between the engaged position and the disengaged position and connected to the lubrication valve (250) to move the lubrication valve (250) between the open position and the closed position.
    Type: Application
    Filed: November 6, 2015
    Publication date: July 7, 2016
    Inventor: Larry A. Pritchard
  • Patent number: 9377060
    Abstract: A first ball ramp half includes a first ball ramp plate grounded within a housing against translation that defines first portions of respective one or more ramped ball receiving recesses. A second ball ramp half includes a gear plate supported within the housing for rotation relative to the first ball ramp plate and grounded within the housing against translation relative to the first ball ramp plate that has gear teeth, a second ball ramp plate supported within the housing for rotation relative to the first ball ramp plate that defines complementary second portions of the respective one or more ramped ball receiving recesses, and a joint coupling the gear plate to the second ball ramp plate. The joint imparts rotation of the gear plate to the second ball ramp plate, and is permissive of translation of the second ball ramp plate relative to the first ball ramp plate.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: June 28, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Steven A. Whitaker
  • Patent number: 9366334
    Abstract: The present invention relates to a transfer case (16) lubrication system (42) that includes a housing (44) defining a chamber and having a lower portion (58). A partition (46) extends from the lower portion (58) and is disposed in the chamber so as to define a reservoir for oil, adjacent to the partition (46) and spaced from the chamber. First and second sprocket (50)s are supported in the chamber, with the first sprocket (48) being spaced from the reservoir. The system also includes a pump assembly (52) having an oil pump (78), a pickup (80) in fluid communication with the pump and at least partially disposed in the reservoir, and a spray bar (82) in fluid communication with the pump for directing oil from the reservoir to a predetermined location within the chamber. A chain (54) connects the sprockets and is spaced from the partition (46) so as to generate a windage force for transferring oil from the chamber to the reservoir in operation.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: June 14, 2016
    Assignee: BORGWARNER INC.
    Inventor: Larry A. Pritchard
  • Publication number: 20160146271
    Abstract: A vehicle powertrain hydraulic system (10) includes a clutch (12), a piston (62) disposed in a cylinder (60) to drive a shift selector (14), a pump (82) in fluid communication with a fluid supply (86) to pressurize fluid, and first and second fluid pressure lines (91, 92) from the pump to first and second sides of the piston. A third fluid pressure line (93) may extend to the clutch from the cylinder in a location between the first and second sides of the piston, such that the piston also may be a valve to control fluid flow to the clutch. The pump may be reversible and coupled to an electric motor (80), and a centrifugal regulator (84) may be coupled to the motor and in fluid communication with the first and second pump pressure lines to regulate fluid pressure therein. A related operational method is also disclosed.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 26, 2016
    Inventors: Donn W. NIFFENEGGER, Larry A. PRITCHARD
  • Publication number: 20160138940
    Abstract: A rotary sensor (10) includes a rotating portion (12) having an outside surface (28) and a magnetic pattern (16) magnetically printed on the rotating portion (12). One or more hall-effect switches (32) are located adjacent to the magnetic pattern (16) and a magnetic field of at least a portion of the magnetic pattern actuates the switches (32). Rotation of a driveshaft (18) controls electric signals conducted through the switches (32) indicating the angular position of the driveshaft (18).
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Christopher V. Kurmaniak, Larry A. Pritchard, Thad Kopp
  • Publication number: 20160131253
    Abstract: A transfer case (30) and a method of assembly in an all-wheel drive vehicle can include a range shifting assembly (60) for shifting between a low-range and high-range drive mode, a normally disengaged clutch assembly (80) for transferring drive torque to a first and second driveline, a clutch actuator (88), and an actuating gear (48). The clutch actuator (88) can be moveable between an expanded position and a contracted position and engageable with the clutch assembly (80) for engaging the clutch assembly (80) when in the expanded position. The actuating gear (48) can be reversibly rotatable through a predetermined angular arc of movement for operating the clutch actuator (88) between the contracted and expanded position for actuating the clutch assembly (80) and for shifting the range shifting assembly (60) between a low-range drive mode and a high-range mode when the clutch assembly (80) is in the disengaged position.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 12, 2016
    Inventors: Larry A. PRITCHARD, David E. YOUNG, Joseph MASTIE, Donn NIFFENEGGER, Christopher KURMANIAK
  • Publication number: 20160121720
    Abstract: A transfer case (14) of a motor vehicle drivetrain includes a planetary gear set (80) including a ring gear (82) to receive input torque, and a pinion assembly (84) having pinion gears (100) in mesh with the ring gear and a carrier (102) to carry the pinion gears and transmit output torque. A sun gear (86) is in mesh with the pinion gears, is selectively connectable to the carrier and rotatable therewith in a two-wheel drive mode and in a four-wheel-drive high range mode, and is selectively fixable against rotational motion in a four-wheel drive low range mode.
    Type: Application
    Filed: October 20, 2015
    Publication date: May 5, 2016
    Inventors: Larry A. Pritchard, Mallikarjun Rudagi, William C. Dodge, Sathya Vaidyanathan
  • Publication number: 20160114680
    Abstract: A power transfer unit for an all-wheel drive drivetrain that includes an engine, a transmission having a pump for circulating hydraulic fluid from a sump, and a driveshaft. The power transfer unit includes an input for receiving driving power from the transmission, an output for delivering driving power to the driveshaft, a first clutch, a first fluid supply path for delivering the hydraulic fluid from the pump to the first clutch, and a fluid return path for retuning the hydraulic fluid from the power transfer unit to the sump of the transmission.
    Type: Application
    Filed: August 28, 2015
    Publication date: April 28, 2016
    Inventor: Larry A. Pritchard
  • Publication number: 20160032986
    Abstract: A power transfer case (10) transfers drive torque from the input member to the output member. The power transfer case (10) includes a lubrication system (18), a hydraulically actuated friction clutch assembly (12), and a hydraulically actuated range shift assembly (14). An on-demand electric lube pump (16) can supply a fluid under pressure. An accumulator (20) is selectively supplied with fluid under pressure from the on-demand lube pump (16). A first valve (22) selectively directs fluid under pressure from the on-demand lube pump (16) to the lubrication system (18) when in a first position (22a) and to the accumulator (20) when in a second position (22b). A second valve (28) selectively directs fluid under pressure from the accumulator (20) to the range shift assembly (14) when in a first position (28a), to the friction clutch assembly when in a second position (28b), and isolates the accumulator (20) from the range shift assembly (14) and the friction clutch assembly (12) when in a third position (28c).
    Type: Application
    Filed: July 22, 2015
    Publication date: February 4, 2016
    Inventor: Larry A. PRITCHARD
  • Publication number: 20160025156
    Abstract: A clutch assembly (10) and a method of assembly operable for transferring rotary power between a first shaft (12) and a second shaft (14) through a set of inner clutch plates (16) and a set of outer clutch plates (18) can include at least one of an outer plate separator (28) and an inner plate separator (30). The outer plate separator (28) can be biased radially inward toward the outer clutch plates (18) for axially separating each of the outer clutch plates (18) and moveable radially outward away from the outer clutch plates (18) by centrifugal force when the clutch assembly (10) is rotated above a predetermined rotational speed threshold. The inner plate separator (30) is biased radially outward for axially separating each of the inner clutch plates (16) and moveable radially inward away from the inner clutch plates (16) by axial movement of a hydraulically actuated wedge member (31) when the clutch assembly (10) is engaged.
    Type: Application
    Filed: July 15, 2015
    Publication date: January 28, 2016
    Inventor: Larry A. PRITCHARD
  • Publication number: 20150330493
    Abstract: A motor vehicle powertrain (10, 210, 310) having a rear driveline module (RDM) (20) for driving a pair of rear wheels (14a, 14b) and a method of assembly can include a hydraulically actuatable rear axle coupling clutch (28) operable to transmit rotary power between an input pinion shaft (22, 222) and a rear differential case (30, 230) and a hydraulic actuating assembly (16). The powertrain (10, 210, 310) can include a hydraulically actuatable differential control clutch (34) mounted coaxial to the rear axle coupling clutch (28) and a power take-off unit (PTU) (36) having a hydraulically actuatable PTU coupling clutch (42). The differential control clutch (28) can provide for speed differentiation between the rear differential case (30, 230) and a half axle shaft (26a, 26b) drivingly connected to a pair of rear wheels (14a, 14b).
    Type: Application
    Filed: May 1, 2015
    Publication date: November 19, 2015
    Inventor: Larry A. PRITCHARD
  • Patent number: 9186987
    Abstract: A transfer case (21, 330) and a method of assembly can include an input shaft (15) and output shafts (14, 16), a mode clutch (30) for shifting between a two-wheel and four-wheel drive mode, a mode shift mechanism (56, 380, 480), a planetary gear assembly (20) for providing a different drive ratio between the input shaft (15) and the output shaft (14), a range shift mechanism (50, 360, 460), and a synchronizer (40, 340) for speed synchronization before shifting between a low-range drive mode and a high-range drive mode. A fixed ring gear (24) can be connected to the planetary gear assembly (20) during the high-range and low-range drive mode. The mode shift mechanism (56) and the range shift mechanism (50) can be electro-mechanically actuated by a reversible rotatable actuating gear (348, 448) interposed between an expandable clutch actuator (388, 488) and a rotatable barrel cam (359, 459).
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: November 17, 2015
    Assignee: BorgWarner, Inc.
    Inventors: Joseph D. Mastie, Larry A. Pritchard, David Young, Donn Niffenegger, Christopher Kurmaniak
  • Publication number: 20150323059
    Abstract: The present invention relates to a transfer case (16) lubrication system (42) that includes a housing (44) defining a chamber and having a lower portion (58). A partition (46) extends from the lower portion (58) and is disposed in the chamber so as to define a reservoir for oil, adjacent to the partition (46) and spaced from the chamber. First and second sprocket (50)s are supported in the chamber, with the first sprocket (48) being spaced from the reservoir. The system also includes a pump assembly (52) having an oil pump (78), a pickup (80) in fluid communication with the pump and at least partially disposed in the reservoir, and a spray bar (82) in fluid communication with the pump for directing oil from the reservoir to a predetermined location within the chamber. A chain (54) connects the sprockets and is spaced from the partition (46) so as to generate a windage force for transferring oil from the chamber to the reservoir in operation.
    Type: Application
    Filed: May 6, 2014
    Publication date: November 12, 2015
    Applicant: BorgWarner Inc.
    Inventor: Larry A. Pritchard
  • Publication number: 20150321553
    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: Application
    Filed: April 23, 2015
    Publication date: November 12, 2015
    Inventors: Larry A. PRITCHARD, Thad KOPP, Keith FELDT, Mark BUCHANAN, Peizhang TU
  • Publication number: 20150321552
    Abstract: A disconnect mechanism (10) for a secondary driveline (12) and method of assembly can be used in an all-wheel drive (AWD) vehicle having a rear driveline module (RDM) (20) for changing drive modes between a two-wheel drive mode and an AWD mode. The disconnect mechanism (10) can include a hydraulically actuated coupling clutch (34) connected to a power take-off unit (PTU) for transferring rotary power from the PTU (36) to the RDM (20) during the AWD mode, a hydraulically actuated first and second rear clutch (30, 32) for rotationally connecting and disconnecting corresponding first and second rear axles (14a, 14b) drivingly coupled to rear wheels (16a, 16b) during the AWD mode and two-wheel drive mode, respectively, and a hydraulic actuating assembly (40) including a source of pressurized fluid (44) for actuating the coupling clutch (34), the first rear clutch (30), and the second rear clutch (32), and for synchronizing any speed differential therebetween.
    Type: Application
    Filed: April 23, 2015
    Publication date: November 12, 2015
    Inventors: Larry A. PRITCHARD, Thad KOPP
  • Patent number: 9168821
    Abstract: The disclosure relates to a product for storing and using energy delivered through a vehicle's drive wheel. A rotatable element may rotate with the drive wheel. A first rotating mechanism may provide an input energy when rotated by the rotatable element. A storage device may receive and store the input energy. A second rotating mechanism may rotate in reaction to selective delivery of the input energy from the storage device to the second rotating mechanism, and may drive the rotatable element. The rotatable element may be adapted to rotate in a first rotational direction to rotate the first rotating mechanism, and may rotate in the same direction when rotated by the second rotating mechanism. A heat transfer device may surround at least part of the storage device. The exhaust system may be routed through the heat exchange device to heat the storage device and increase stored energy.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: October 27, 2015
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Publication number: 20150291037
    Abstract: A number of variations may include a motor/energy generator and energy storage device combination.
    Type: Application
    Filed: April 6, 2015
    Publication date: October 15, 2015
    Inventor: Larry A. Pritchard
  • Patent number: 9109646
    Abstract: A number of variations may include a transfer case comprising: a clutch pack, wherein the clutch pack includes a first plurality of clutch plates rotatably coupled with an output member, a second plurality of clutch plates interleaved with the first plurality of clutch plates and rotatably coupled with an input member, and an apply plate; a solenoid operably associated with the friction clutch pack, wherein the solenoid includes a coil and an armature; at least one lever mechanism, wherein a first end of the at least one lever mechanism is stationary and a second end is attached to and moves with the armature; and wherein when the solenoid is deenergized there is an air gap between the armature and the coil and when the solenoid is energized the armature moves toward the coil causing the first end of the lever component to engage the clutch pack.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: August 18, 2015
    Assignee: BorgWarner Inc.
    Inventors: Larry Pritchard, Thaddeus Kopp