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:
Sep. 10, 2013
Filed:
Nov. 30, 2011
Nathan H. Laws, Dubuque, IA (US);
Jonathan R. Copeland, Peosta, IA (US);
Jacob J. Foxen, Parkersburg, IA (US);
Anthony W. Brandon, Sherrill, IA (US);
Nathan H. Laws, Dubuque, IA (US);
Jonathan R. Copeland, Peosta, IA (US);
Jacob J. Foxen, Parkersburg, IA (US);
Anthony W. Brandon, Sherrill, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A charge pressure reduction circuit for a loader backhoe in which a directional control valve causes the charge pump to operate at a system pressure high enough to adequately supply a clutch circuit when conditions indicate the vehicle is operating in a loader or transport mode. The directional control valve causes the charge pump to operate at a lower pressure as, for example, required for a lubrication circuit when conditions indicate the vehicle is in a backhoe operating mode.