Patent · US Expired

Floating ring seal means

US4012049A · kind A · utility

5Cited by

3References

8Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Dietrich Lambrecht
Erich Weghaupt · Mülheim, DE
Lothar Grimm
Helmut Munch · Bischofswerda, DE

Key dates

Filing date	Oct 31, 1974
Grant date	Mar 15, 1977
Priority date	—
Expiry date	Oct 31, 1994

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J15/441
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Floating ring seal means for cooling water pumps, especially for cooling water connectors of water-cooled rotors of turbogenerators. A stabilization of the floating ring is achieved through pistons which are pressurized by pump pressure. This results in a ring seal holding force which increases proportionally to an increasing number of revolutions.

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