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:
May. 22, 1990
Filed:
Apr. 03, 1989
Applicant:
Inventor:
Thomas T Hitch, Lawrenceville, NJ (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F27B / ; F27B / ; F27B / ;
U.S. Cl.
CPC ...
432206 ; 432136 ; 432152 ; 432144 ; 432198 ; 432200 ; 1375 / ; 1375 / ; 118715 ;
Abstract
A two-stage gas distribution nozzle for a muffle furnace includes an inner pipe with spaced apertures for feeding gas at spaced intervals to an outer pipe enclosing the inner pipe. The outer pipe includes spaced apertures facing in a direction such that the jets of gas from the inner pipe impinge on a wall of the outer pipe opposite the outer pipe apertures. The gas in the outer pipe is at lower pressure than the gas in the inner pipe and is more uniformly distributed along the length of the outer pipe to provide more uniform flow to the ambient atmosphere in the muffle.