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:
Nov. 27, 2001
Filed:
Oct. 21, 1999
James B. Prohaska, Prior Lake, MN (US);
Ag-Chem Equipment Co., Inc., Minnetonka, MN (US);
Abstract
A vehicle with a hydrostatic drive circuit assembly including a vehicle frame and a hydrostatic drive circuit. The hydrostatic drive circuit has four hydrostatic motors configured to produce a torque and cause rotation of the wheels or tracks of the vehicle, and two hydrostatic pumps adapted to distribute fluid to the hydrostatic motors. A controller is provided to signal for adjustments of torque applied to the wheels when a first wheel is rotating at a first rate and a second wheel is rotating at a second rate different than the first rate. The controller is adapted to cause adjustments to the displacement in either the motors or the pumps, and cause a change in torque in the first wheel that is substantially equal and opposite to the change in torque in the second wheel.