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:
Sep. 11, 1984
Filed:
Sep. 29, 1982
Applicant:
Inventor:
Kiyoshi Nagai, Nishinomiya, JP;
Assignee:
Taiyo Sanso Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 53 86 ; 2191 / ; 2191 / ;
Abstract
A method of evacuating and sealing the vacuum chamber of a stainless steel vacuum bottle includes the steps of piercing the outer bottle with only very small openings into the vacuum chamber and closing the openings by means of an electron-beam welder after the bottle is heated and the vacuum chamber evacuated.