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:
Jul. 23, 2013
Filed:
Oct. 09, 2009
Terry Lynn Lyons, Bluff City, TN (US);
Maynard Wayne Marts, Jonesborough, TN (US);
Michael L. Melton, Greeneville, TN (US);
Ricky L. Kegley, Greeneville, TN (US);
Jason Scot Richardson, Chuckey, TN (US);
John M. Rector, Jonesborough, TN (US);
Terry Lynn Lyons, Bluff City, TN (US);
Maynard Wayne Marts, Jonesborough, TN (US);
Michael L. Melton, Greeneville, TN (US);
Ricky L. Kegley, Greeneville, TN (US);
Jason Scot Richardson, Chuckey, TN (US);
John M. Rector, Jonesborough, TN (US);
Parker Hannifin Corporation, Cleveland, OH (US);
Abstract
A hydraulic motor receives pressurized fluid from a source controlled by a human operator to convert the energy in the hydraulic fluid to a rotational output to propel a drive wheel of a machine. The hydraulic motor includes an end cover, a manifold, a drive assembly, a wear plate, a housing, and an output assembly. The drive assembly includes a rotor with external teeth and a stator with internal teeth formed by rollers having end faces. The pressurized fluid from the source flows through the manifold to the drive assembly and causes rotational and orbital movement of the rotor relative to the stator. The rotational movement of the rotor is transmitted to the drive wheel by the output assembly. A first set of anti-cogging passages and a second set of anti-cogging passages communicate fluid pressure to the end faces in timed relationship to reduce cogging or detenting of the rotational output of the motor.