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:
Feb. 02, 1987
Filed:
Jun. 27, 1985
Applicant:
Inventors:
Donald W Chapin, Scottsdale, AZ (US);
John F Thurston, Mesa, AZ (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02K / ; F16K / ; F16K / ; F15C / ;
U.S. Cl.
CPC ...
60243 ; 137501 ; 137831 ;
Abstract
A ramjet fuel control system that provides a regulated fuel pressure of a predetermined differential between the fuel pump pressure and the inlet pressure to a metering valve. The differential regulator uses a spool valve and sleeve in which the sleeve has ports positioned to prevent hydrodynamic flow force while the sleeve metering valve spool has rectangular ports so that the metering area which is uncovered by the spool is linearly related to the stroke of the valve spool.