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:
Dec. 21, 1999
Filed:
Feb. 19, 1998
Applicant:
Inventor:
Sant P Grewal, Fenwick, CA;
Assignee:
Stelco Inc., Ontario, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277609 ; 277324 ; 277630 ;
Abstract
A seal for a high temperature treatment vessel, particularly those common to the steel industry, has a primary purpose to prevent gases from escaping the treatment vessel. The seal is provided by a positive gas pressure curtain barrier means, a plurality of mechanical seal and a means of aspirating gases escaping past the seals for recycling into the vessel.