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:
Jul. 30, 1991
Filed:
Feb. 14, 1990
Applicant:
Inventors:
Joseph W Brickell, Jonesboro, AR (US);
Steven W Post, Jonesboro, AR (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01C / ;
U.S. Cl.
CPC ...
239156 ; 239 63 ; 1374895 ;
Abstract
A pressure control system, including a pilot valve suitable for use therein, for providing a constant pressure from a non-compensated pump to a plurality of nozzle valves controlling flow from a manifold to nozzles associated with the valves, including a pressure control valve interposed between the pump and the manifold which is response to a control pressure created by a pilot valve which reduces manifold pressure to the control pressure.