Patents by Inventor Andrew R. Torkelson

Andrew R. Torkelson 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).

  • Hydrostatic drive for a machine
    Patent number: 8935920
    Abstract: A hydrostatic drive including a hydrostatic pump configured to supply a transmission fluid. The hydrostatic drive further includes an axle motor and a drum motor. The axle motor is configured to drive a set of traction wheels and the drum motor is configured to drive a drum. The hydrostatic drive also includes an axle drive line and a drum drive line. The axle drive line and the drum drive line are connected to the axle motor and the drum motor respectively to supply the transmission fluid. A manifold integrally connected to the hydrostatic pump to operatively couple the axle drive line and the drum drive line with the hydrostatic pump.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: January 20, 2015
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Thomas J. Olson, Andrew R. Torkelson
  • HYDROSTATIC DRIVE FOR A MACHINE
    Publication number: 20130115014
    Abstract: A hydrostatic drive including a hydrostatic pump configured to supply a transmission fluid. The hydrostatic drive further includes an axle motor and a drum motor. The axle motor is configured to drive a set of traction wheels and the drum motor is configured to drive a drum. The hydrostatic drive also includes an axle drive line and a drum drive line. The axle drive line and the drum drive line are connected to the axle motor and the drum motor respectively to supply the transmission fluid. A manifold integrally connected to the hydrostatic pump to operatively couple the axle drive line and the drum drive line with the hydrostatic pump.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 9, 2013
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Thomas J. Olson, Andrew R. Torkelson
  • Vibratory roller
    Patent number: D899468
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 20, 2020
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Mark D. Behn, Brian Nagel, Terril Johnson, Robert Iverson, Andrew R. Torkelson