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:
May. 17, 2016
Filed:
Apr. 28, 2011
Applicant:
Dirk Grieshaber, Wesel, DE;
Inventor:
Dirk Grieshaber, Wesel, DE;
Assignee:
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 11/00 (2006.01); F01D 25/00 (2006.01); F01D 11/02 (2006.01); F16J 15/34 (2006.01); F02C 7/28 (2006.01);
U.S. Cl.
CPC ...
F01D 25/00 (2013.01); F01D 11/003 (2013.01); F01D 11/005 (2013.01); F01D 11/02 (2013.01); F02C 7/28 (2013.01); F16J 15/342 (2013.01); F05D 2240/55 (2013.01);
Abstract
A shaft seal includes more than one sealing module, at least one fluid supply and a fluid discharge, and a main seal which is subject to a greatest partial pressure difference. A second main seal is a radial double seal, which includes two gas seals, each gas seal having a rotating sealing surface and a stationary sealing surface, wherein the two sealing surface pairs are located opposite each other in a sealing plan, and wherein the two sealing planes have substantially radial extension to the shaft.