Patent · US Expired

Seal arrangement

US5722671A · kind A · utility

12Cited by

9References

6Claims

0Family size

Assignee

Feodor Burgmann Dichtungswerke GmbH & Co. · DE

Inventors

Josef Nosowicz · Geretsried, DE
Michael Riedl · Bergheim, DE
Rudolf Kollinger · Barth, DE

Key dates

Filing date	Jan 16, 1997
Grant date	Mar 3, 1998
Priority date	—
Expiry date	Jan 16, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J15/3404
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A seal arrangement for sealing a shaft with respect to a housing containing a fluid comprises a face seal exposed to a buffer gas on a portion thereof facing away from the fluid. Disposed upstream of the face seal at the fluid said portion thereof is a collecting chamber for receiving a leakage of the buffer gas having gained access to the fluid-side portion of the face seal. The collecting chamber is in communication with an external separating means for separating the gas phase from the fluid phase of a gas/fluid mixture having collected in the collecting chamber. The fluid phase can be returned into the interior of the housing.

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