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:
Oct. 17, 2006
Filed:
Sep. 21, 2004
George T. Lumpkins, Katy, TX (US);
Peter J. Dix, Naperville, IL (US);
Daniel B. Shore, Prospect Heights, IL (US);
George T. Lumpkins, Katy, TX (US);
Peter J. Dix, Naperville, IL (US);
Daniel B. Shore, Prospect Heights, IL (US);
CNH America LLC, New Holland, PA (US);
Abstract
A dozer blade control system controls the position of a bulldozer blade, maintaining the blade at a constant position as the dozer travels through a worksite. The control system monitors the angle of the dozer blade with respect to the earth and when it senses that the dozer blade is tilting, it corrects the dozer blade's position by extending or retracting hydraulic cylinders that couple the dozer blade to the chassis of the crawler-tractor. When the dozer chassis pitches forwards, the blade begins to tilt forward and to drop closer to the ground. The control system senses this forward rotation of the blade and retracts the hydraulic cylinders that couple the blade to the chassis, causing the blade to return to and maintain its original position. Conversely, when the dozer chassis pitches backwards and the blade begins to tilt backward and rise higher above the ground, the control system extends the hydraulic cylinders coupling the blade to the chassis and lowers the blade, causing the blade to return to and maintain its original position with respect to the earth.