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:
Nov. 18, 1997
Filed:
Sep. 27, 1996
Applicant:
Inventor:
Randy C Edenfield, Flowery Branch, GA (US);
Assignee:
The Lincoln Electric Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
266 48 ;
Abstract
A fuel gas and preheat oxygen mixer for a gas torch comprises a bore in the torch head receiving a gas mixing insert having an axially thin peripheral gas mixing recess which receives preheat oxygen and fuel gas from corresponding manifold areas across radially thin metering passages. The gases are mixed in the mixing recess and delivered to the torch tip through delivery passages which, together with the mixing recess and metering passages provide gas flow paths having abrupt directional changes, all of which cooperatively resist flashbacks during use of the torch.