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:
Mar. 03, 2015
Filed:
Jul. 29, 2011
Daniel T. Mather, Lockport, IL (US);
Troy A. Shawgo, Forsyth, IL (US);
Daniel H. Killion, Blaine, MN (US);
Vishnu Irigireddy, Lexington, SC (US);
Deepak Amaravadi, Forsyth, IL (US);
Dayao Chen, Bolingbrook, IL (US);
Matthew Hempel, Urbandale, IA (US);
Kenneth A. Dust, Downers Grove, IL (US);
Ryan M. Ludwig, Washington, IL (US);
Alfred J. Abraham, Decatur, IL (US);
Michael E. Nesbitt, Washington, IL (US);
Daniel T. Mather, Lockport, IL (US);
Troy A. Shawgo, Forsyth, IL (US);
Daniel H. Killion, Blaine, MN (US);
Vishnu Irigireddy, Lexington, SC (US);
Deepak Amaravadi, Forsyth, IL (US);
Dayao Chen, Bolingbrook, IL (US);
Matthew Hempel, Urbandale, IA (US);
Kenneth A. Dust, Downers Grove, IL (US);
Ryan M. Ludwig, Washington, IL (US);
Alfred J. Abraham, Decatur, IL (US);
Michael E. Nesbitt, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A hydraulic system having an actuator having a piston and associated rod forming head and rod chambers and being adapted to move between retracted and extended positions within a cylinder, and first and second sources of fluid. A first pump provides fluid from the first source to the head chamber at a first pressure. At least one valve provides fluid from the second source at a second pressure to supplement fluid provided to the head chamber from the first pump when the second pressure is greater than the first pressure.