Patent · US Active

Device for sealing a rotating shaft

US8550780B2 · kind B2 · utility

0Cited by

7References

23Claims

0Family size

Assignee

Voith Patent GmbH · DE

Inventors

Markus Müller · Männedorf, CH
Markus Deeg · Eberdingen, DE

Key dates

Filing date	Jul 9, 2010
Grant date	Oct 8, 2013
Priority date	—
Expiry date	Sep 17, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB63H23/321
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A device serves the purpose of sealing a rotating shaft for use under water. It exhibits face seals which seal a work area against the water. In accordance with the invention the face seals are constructed in the form of three slide ring pairs, wherein between the three slide ring pairs two areas (18, 21) are arranged. One of the areas is a sealing area adjacent to the water filled with a first medium and the other area is a leaking area adjacent to the work area. In the sealing area the first medium is held at a pressure level which is higher than the pressure of the adjacent water.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.