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:
Jan. 19, 2010
Filed:
Jun. 08, 2007
David Joseph Easton, Cedar Falls, IA (US);
Bruce Craig Newendorp, Cedar Falls, IA (US);
David Joseph Easton, Cedar Falls, IA (US);
Bruce Craig Newendorp, Cedar Falls, IA (US);
Deere & Company, Moline, IL (US);
Abstract
The invention relates to a vehicle with coordinated steering. There is a need for a vehicle wherein Ackerman steered front wheels are coordinated with differentially steered and driven rear wheels. Such a vehicle includes Ackerman steerable front wheels and differentially driven left and right rear wheels. A steered wheel angle sensor is coupled to the front wheels and generates a steered wheel angle value. A front steering unit steers the front wheels and a differential drive unit drives the rear wheels. A control unit is coupled to the steering input sensor, to the steered wheel angle sensor, and to the front steering unit and the differential drive unit. The control unit generates the front steering control signal and the rear drive/steering control signal, and coordinates the steering operation of the front wheels with the differential steering/driving of the rear wheels.