Patents by Inventor Ron Sporrer

Ron Sporrer 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).

  • Transaxle with controlled traction differential
    Patent number: 6443869
    Abstract: An axle assembly including a housing in which is mounted a transmission, axle shafts and a differential assembly including drive gears engaged to the axle shaft and at least one planet gear mounted on a shaft and engaged to the drive gears. The differential assembly includes a friction member on the shaft for engaging the planet gear.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: September 3, 2002
    Assignee: Hydro-Gear Limited Partnership
    Inventors: John Schreier, Matthew Hansen, Todd Horton, Ron Sporrer
  • Controlled traction cartridge and differential for a hydrostatic transmission
    Patent number: 6358175
    Abstract: An integrated hydrostatic transaxle including a housing in which is mounted a hydrostatic transmission having a hydraulic pump unit and a hydraulic motor unit with a motor shaft drivingly connected thereto. A differential assembly is drivingly linked to the motor shaft and is used to drive output axle shafts of the transaxle. The differential assembly includes a rotatable gear which is maintained in frictional engagement with at least one bearing surface for frictionally inhibiting the rotational movement thereof.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: March 19, 2002
    Assignee: Hydro-Gear Limited Partnership
    Inventors: John Schreier, Matthew Hansen, Todd Horton, Ron Sporrer
  • Integrated hydrostatic transaxle with controlled traction differential
    Patent number: 6152846
    Abstract: An integrated hydrostatic transaxle including a housing in which a center section is supported. The center section supports a hydraulic pump unit and a hydraulic motor unit having a motor shaft drivingly connected thereto. A differential assembly is drivingly linked to the motor shaft and is used to drive a pair of axle shafts which are supported by the housing. The differential assembly includes a rotatable gear which is maintained in frictional engagement with at least one bearing surface for frictionally inhibiting the rotational movement thereof.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: November 28, 2000
    Assignee: Hydro-Gear Limited Partnership
    Inventors: John Schreier, Matthew Hansen, Todd Horton, Ron Sporrer
  • Integrated hydrostatic transaxle with controlled traction differential
    Patent number: 5984822
    Abstract: An integrated hydrostatic transaxle including a housing in which a center section is supported. The center section supports a hydraulic pump unit and a hydraulic motor unit having a motor shaft drivingly connected thereto. A differential assembly is drivingly linked to the motor shaft and is used to drive a pair of axle shafts which are supported by the housing. The differential assembly includes a rotatable gear which is maintained in frictional engagement with at least one bearing surfaces for frictionally inhibiting the rotational movement thereof.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: November 16, 1999
    Assignee: Hydro-Gear Limited Partnership
    Inventors: John Schreier, Matthew Hansen, Todd Horton, Ron Sporrer
  • Integrated hydrostatic transaxle with controlled traction differential
    Patent number: 5897452
    Abstract: An integrated hydrostatic transaxle including a housing in which a center section is supported. The center section supports a hydraulic pump unit and a hydraulic motor unit having a motor shaft drivingly connected thereto. A differential assembly is drivingly linked to the motor shaft and is used to drive a pair of axle shafts which are supported by the housing. The differential assembly includes a rotatable gear which is maintained in frictional engagement with at least one bearing surfaces for frictionally inhibiting the rotational movement thereof.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: April 27, 1999
    Assignee: Hydro-Gear Limited Partnership
    Inventors: John Schreier, Matthew Hansen, Todd Horton, Ron Sporrer