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:
Dec. 29, 2015
Filed:
Jun. 23, 2011
Applicant:
Joshua D. Graeve, Peosta, IA (US);
Inventor:
Joshua D. Graeve, Peosta, IA (US);
Assignee:
DEERE & COMPANY, Moline, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/024 (2006.01); E02F 9/22 (2006.01); F15B 13/02 (2006.01); F15B 13/04 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2267 (2013.01); F15B 13/021 (2013.01); F15B 13/024 (2013.01); F15B 13/0402 (2013.01); Y10T 137/86646 (2015.04);
Abstract
The present disclosure provides a hydraulic system for controlling a load. The system includes a housing defining an inlet, a first port, and a second port. The system further includes a spool valve and a proportional control element. The spool valve is in fluid communication with the inlet and the second port and the proportional control element is in fluid communication with the first port. The proportional control element can be controllable to exhaust fluid from the first port to a reservoir. In this arrangement, the proportional control element and the spool valve are controlled independently of one another.