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:
Jul. 26, 2005
Filed:
Jul. 03, 2001
Rolf Johnen, Wiemersdorf, DE;
Rolf Johnen, Wiemersdorf, DE;
Dichtungstechnik G. Bruss GmbH & Co., Hamburg, DE;
Abstract
A sealing ring for a shaft (), characterized by a sealing lip () made of an elastomer material is flexionally dimensioned with a flexional elasticity which is sufficient for pressing a sealing section () of the sealing lip () against the surface of the shaft (). The sealing section () of the sealing lip () is disposed with a cylindrical part of a given length (L) on the periphery of the shaft (). The sealing lip () is provided with a thread () at least along the above-mentioned length on the shaft side, whereby a discharged medium is transported back to the sealing area (M) when the shaft () is rotated. By dimensioning accordingly, it is possible to dispense with an additional spring for pressing a sealing lip () against the shaft (). The thread () is also sealed off from the surrounding area (U) in order to prevent the medium to be sealed from flowing out when the shaft () is not in operation.