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. 08, 2011
Filed:
Jul. 24, 2008
C. Erik Bright, Raleigh, NC (US);
Steven A. Daniel, East Peoria, IL (US);
Bradley J. Mcmanus, Normal, IL (US);
Daniel P. Sergison, East Peoria, IL (US);
Norval P. Thomson, Dunlap, IL (US);
C. Erik Bright, Raleigh, NC (US);
Steven A. Daniel, East Peoria, IL (US);
Bradley J. McManus, Normal, IL (US);
Daniel P. Sergison, East Peoria, IL (US);
Norval P. Thomson, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A rear wheel drive assist for a wheel tractor scraper, the wheel tractor scraper having a tractor portion with a power source operatively connected to the front driven wheels, and a rear, scraper portion having a bowl, work tool, and first and second rear wheels, the rear wheel drive assist includes a work tool pump fluidly connected to a work tool motor to drive the work tool, fluid operated drive motors operatively connected to the rear wheels, and a diverter valve selectively movable between a first position that delivers fluid flow from the pump to the work tool motor, and a second position that delivers fluid flow from the work tool pump to the rear wheel drive motors.