Patents by Inventor Lisa K. Furches

Lisa K. Furches 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).

  • Multiple gear motor drive
    Patent number: 8596165
    Abstract: A hydraulic drive comprising multiple gear motors each having a gear motor output shaft, and a common gear engaged by the output shafts of the multiple gear motors. Each hydraulic motor has a characteristic sinusoidal torque ripple out of phase with the characteristic sinusoidal torque ripple of at least one other hydraulic motor for cancelling torque ripple and thereby reducing the torque ripple at the common gear.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: December 3, 2013
    Assignee: Parker-Hannifin Corporation
    Inventors: Joseph A. Kovach, Lisa K. Furches, Richard D. Kimpel, Hao Zhang, Raymond E. Collett, Lori A. Martinelli
  • MULTIPLE GEAR MOTOR DRIVE
    Publication number: 20080113838
    Abstract: A hydraulic drive comprising multiple gear motors each having a gear motor output shaft, and a common gear engaged by the output shafts of the multiple gear motors. Each hydraulic motor has a characteristic sinusoidal torque ripple out of phase with the characteristic sinusoidal torque ripple of at least one other hydraulic motor for cancelling torque ripple and thereby reducing the torque ripple at the common gear.
    Type: Application
    Filed: June 11, 2007
    Publication date: May 15, 2008
    Inventors: Joseph A. Kovach, Lisa K. Furches, Richard D. Kimpel, Hao Zhang, Raymond E. Collett, Lori A. Martinelli