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. 06, 1982
Filed:
Oct. 02, 1980
Ambrogio Perego, Wettingen, CH;
BBC, Brown, Boveri & Company Ltd., Baden, CH;
Abstract
In order to seal a rotating shaft in relation to a stationary housing portion or part a sealing bushing is arranged between both of these parts. The sealing bushing, while forming a sliding fit and being non-rotatable during operation, is arranged in a housing bore of the housing part and forms with a rotor portion or part arranged upon the shaft a contactless labyrinth seal. This sealing bushing bears in axial direction towards a side impinged with lower pressure, by means of a first sealing surface which tends to wear rather markedly during the running-in time of the sliding bushing, against a second sealing surface which is arranged at a rotor part rotatable relative thereto. To limit this wear and to obtain a sealing bushing which is free of play and contactless at the sealing region the sealing bushing is provided with a stop which, following the initial play, after expiration of the running-in time, bears against the stationary housing portion and thus limits the wear of the first sealing surface to a predetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile