Patent · US Expired

Rotating sealing device

US5799951A · kind A · utility

11Cited by
10References
26Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 21, 1996
Grant dateSep 1, 1998
Priority date
Expiry dateNov 21, 2016

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16J15/43
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A rotating sealing device for sealing between a wall separating two mediums under substantially different pressure and a rotatable shaft utilizes a combination of a liquid meatal seal comprising at least one liquid metal ring and a shield means which prevents contamination of the metal ring by gases coming into contact with the liquid metal. Magnetic fluid seal, a ring of an oil material, or inert gas may be used as a shield to protect the liquid metal.

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