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:
Jun. 27, 1989
Filed:
Apr. 04, 1988
Applicant:
Inventor:
Graham A Reynolds, Coventry, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ; F16K / ;
U.S. Cl.
CPC ...
137601 ; 25112906 ;
Abstract
A valve is one of a plurality of similar valves set out in the form of a matrix to constitute a portion of the fuel control system of a gas turbine engine. The valve comprises a piezo-electric crystal and is deformable by the application of a potential difference thereto from a first, non-deformed condition in which the crystal blocks the orifice to second deformed condition in which the orifice is unblocked. At least some of the valves are normally redundant but are caused to become operable in the event of the failure of any of the other operable valves.