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. 22, 2016
Filed:
Aug. 05, 2013
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Ingo Henry Johannes Jahn, West End, AU;
Christopher Davies, Derby, GB;
Assignee:
ROLLS-ROYCE PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F16J 15/30 (2006.01); F16J 15/26 (2006.01); F16J 15/44 (2006.01);
U.S. Cl.
CPC ...
F16J 15/30 (2013.01); F16J 15/26 (2013.01); F16J 15/3452 (2013.01); F16J 15/3464 (2013.01); F16J 15/441 (2013.01);
Abstract
An intershaft seal is provided 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 different fluid pressure on the other, second side of the seal. The seal includes a first runner which extends circumferentially around a first one of the shafts and projects therefrom into the annular space. The seal further includes a sealing ring which is coaxial with the shafts.