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. 02, 1980
Filed:
Jan. 22, 1979
Applicant:
Inventors:
Robert Smilges, Paris, FR;
Richard Wigmore, Brighton, GB;
Assignee:
Abex Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 30 ; 137489 ;
Abstract
This invention relates to an electrically controlled flow control valve in which it is possible for the pilot fluid pressure which controls the main metering spool to build to full inlet pressure if necessary to initiate movement of the spool. An electrically operated solenoid operates a control poppet which regulates the pressure of the pilot fluid to position the metering spool.