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:
Mar. 03, 2015
Filed:
Jul. 22, 2011
Applicants:
Ingo H. J. Jahn, Derby, GB;
Gavin M. Rowntree, Derby, GB;
Inventors:
Ingo H. J. Jahn, Derby, GB;
Gavin M. Rowntree, Derby, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F02C 7/28 (2006.01); F01D 11/00 (2006.01);
U.S. Cl.
CPC ...
F02C 7/28 (2013.01); F01D 11/00 (2013.01); F01D 11/003 (2013.01); F16J 15/3472 (2013.01); F16J 15/3484 (2013.01); F16J 15/3488 (2013.01);
Abstract
An intershaft seal for inner and outer coaxial shafts which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial pressure differential between a fluid pressure on the first side of the seal and a fluid pressure on the other, second side of the seal. The seal comprises a sealing ring which is coaxial with the shafts and which forms a sealing contact with the outer shaft to maintain the pressure differential.