The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2013
Filed:
Jun. 11, 2007
Joseph A. Kovach, Aurora, OH (US);
Lisa K. Furches, Charlotte, NC (US);
Richard D. Kimpel, Middleburg Heights, OH (US);
Hao Zhang, Solon, OH (US);
Raymond E. Collett, Put-In-Bay, OH (US);
Lori A. Martinelli, Lordstown, OH (US);
Joseph A. Kovach, Aurora, OH (US);
Lisa K. Furches, Charlotte, NC (US);
Richard D. Kimpel, Middleburg Heights, OH (US);
Hao Zhang, Solon, OH (US);
Raymond E. Collett, Put-In-Bay, OH (US);
Lori A. Martinelli, Lordstown, OH (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile