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:
Sep. 01, 2015
Filed:
Mar. 08, 2012
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 7/228 (2006.01); F02C 7/232 (2006.01); F02C 7/236 (2006.01); F02C 9/26 (2006.01); F02C 9/34 (2006.01);
U.S. Cl.
CPC ...
F02C 7/232 (2013.01); F02C 7/228 (2013.01); F02C 7/236 (2013.01); F02C 9/263 (2013.01); F02C 9/34 (2013.01); F05D 2270/62 (2013.01); Y10T 137/85938 (2015.04);
Abstract
A fuel system comprises a supply unit operable to deliver a metered supply of fuel to a supply manifold, a staging valve operable to control the supply of fuel from the supply manifold to a pilot outlet and a main outlet, and control means operable to control the operation of the staging valve to control whether fuel is delivered through the pilot and/or main outlet thereof.