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:
Aug. 02, 2016
Filed:
Dec. 21, 2011
Applicants:
Michael Griffiths, Bromsgrove, GB;
Jonathan David Pye, East Grinstead, GB;
Inventors:
Michael Griffiths, Bromsgrove, GB;
Jonathan David Pye, East Grinstead, GB;
Assignee:
ROLLS-ROYCE CONTROLS AND DATA SERVICES LIMITED, Derby, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/22 (2006.01); F02C 7/232 (2006.01); F02C 9/34 (2006.01); F02C 9/26 (2006.01); F02C 7/228 (2006.01);
U.S. Cl.
CPC ...
F02C 7/228 (2013.01); F02C 7/232 (2013.01); F02C 9/263 (2013.01); F02C 9/34 (2013.01);
Abstract
A fuel staging system is described which comprises a staging valveoperable to divide a metered fuel supply between a pilot delivery lineand a mains delivery line, and a recirculation valveconnected to the mains delivery lineand operable to permit a recirculation fuel flow to be supplied to the mains delivery linewhen the staging valveoccupies a position in which substantially no fuel is delivered to the mains delivery linethrough the staging valve