John M Rector

US Patent:

8491288, Jul 23, 2013

Filed:

Oct 9, 2009

Appl. No.:

12/576298

Inventors:

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

Assignee:

Parker Hannifin Corporation - Cleveland OH

International Classification:

F03C 2/00
F03C 4/00
F04C 2/00

US Classification:

418 613, 418 72, 418 75, 418132

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.

US Patent:

20160003336, Jan 7, 2016

Filed:

Feb 14, 2014

Appl. No.:

14/765686

Inventors:

- Cleveland OH, US
Matthew Herman Simon - Paw Paw MI, US
David Mark Heathcoat - Greeneville SC, US
Jason Scot Richardson - Chuckey TN, US
John Matthew Rector - Jonesboro TN, US
Raymond E. Collett - Put-in-Bay OH, US
Somer Renee Malone - Chuckey TN, US

International Classification:

F16H 47/04
F16H 39/12
F15B 11/028

Abstract:

A center section/motor sub-assembly for use in a hydrostatic transmission includes a center section having a pump running face for interfacing with a pump, and a motor running face for interfacing with a motor. The center section and the motor are configured for the hydraulic separating forces of the motor to be reacted only into the center section. The center section has two internal passages between pump kidney ports and motor kidney port, and the motor kidney ports are raised in elevation relative to the pump kidney ports. The internal passages run parallel to each other as they rise in elevation. A hydrostatic transmission includes the sub-assembly enclosed by a housing, in combination with a pump and output shaft assembly. For installation, the output shaft assembly is configured as a separate component from the sub-assembly of the center section and the motor.