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:
Aug. 04, 1992
Filed:
Nov. 09, 1990
Applicant:
Inventors:
Mikihiko Yoshida, Ibaragi, JP;
Hiroaki Yamada, Saitama, JP;
Assignee:
Okabe Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228 46 ; 228216 ; 219 99 ;
Abstract
A welding accessory which includes an arc shield having outer and inner peripheral surfaces such that a weld can be formed within the inner peripheral surface as the arc shield shields the weld form external air during forming of the weld. The arc shield includes a ceramic material having not less than 40 weight % of boron nitride. The arc shield may be formed of a composite of boron nitride and silicon nitride, a composite of boron nitride and alumina nitride, a composite of boron nitride, aluminum and silicon nitride, or a composite of boron nitride and zirconia.