Parker-hannifin Corporation

Kerry Brock

Kirk Ayres Lola

Michael Tholan Crosby

Roger Paul Gray

David Mark Heathcoat

David Mark Heathcoat, Jr

Somer Renee Malone

Jason Lee Emmette

Eli Cutshall

Roger Paul Gray, Ii

A vehicle includes a pump having a swash plate tiltable about a swashplate tilt axis, wherein rotation of the swashplate changes the title angle and effects a change in volumetric displacement of the pump. A controller is operatively coupled to the swashplate to effect rotation of the swashplate, the controller including a processor and memory, and logic stored in the memory and executable by the processor, the logic configured to automatically control at least one vehicle characteristic independent of a user input command.

Controller and system for utility vehicle

A zero turn mower vehicleincludes left and right hydrostatic transmissionsdriving wheels. The transmissionseach include a swashplate type axial piston hydraulic pumphaving a swashplate. A systemand method controls each pump. A controllerreceives input signals and provides output signals to electric motorsto control each swashplate. Operator interface input devicesprovide inputs to controller. Angle sensorsprovide additional inputs to controller. Displacement amplifiersamplify displacement of each swashplate, and torque amplifiersamplify torque of electric motors

Pump control system and method

Growing community of inventors

Forest City, NC, United States of America

Kerry Brock