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:
Aug. 27, 2013
Filed:
Jan. 27, 2009
Sean C. O'connor, Charlotte, NC (US);
Gregory Merriweather, Charlotte, NC (US);
Harry L. Derby, V, Charlotte, NC (US);
Martin M. Carlson, Tega Cay, SC (US);
Kenneth R. Wilson, Stanley, NC (US);
Sean C. O'Connor, Charlotte, NC (US);
Gregory Merriweather, Charlotte, NC (US);
Harry L. Derby, V, Charlotte, NC (US);
Martin M. Carlson, Tega Cay, SC (US);
Kenneth R. Wilson, Stanley, NC (US);
Textron Innovations Inc., Providence, RI (US);
Abstract
A turf maintenance vehicle all-wheel drive traction control system includes a primary wheel propelling the vehicle. A first motor rotates the primary wheel. A traction control system has a first portion communicating with the first motor to monitor either a first motor current demand or a rotational speed of the primary wheel or the first motor and generates a traction control value. A secondary wheel rotated by a second motor steers the vehicle in a vehicle non-slip condition. A traction control system second portion determines a secondary wheel steering angle value. A speed threshold limit stored in the traction control system compared to the traction control value generates a slippage occurrence message indicative of a primary wheel traction loss event. A second motor drive signal created by comparing the steering angle value and the slippage occurrence message energizes the second motor during the traction loss event.