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:
Feb. 22, 1977
Filed:
Sep. 23, 1974
Donald Wentworth, Tufnell Park, EN;
Howaldtswerke-Deutsche Werft Aktiengesellschaft Hamburg und Kiel, Kiel Diedrichsdorf, DT;
Abstract
A seal for a rotating shaft, especially for the stern tube seal of a ship, ith at least one radial sealing ring bearing in sealing manner against the shaft or a shaft bush, or at least one reserve sealing ring mounted on a support, which can be moved by axial displacement of the support into a working position on the shaft, wherein the support is arranged so as to be axially movable in guides on parts of the housing of the seal and is provided with a chamber for receiving a pressure medium, especially a hydraulic medium, for moving the support to bring the sealing ring (reserve sealing ring) into a working position on the shaft.