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. 20, 1977
Filed:
Aug. 12, 1976
Applicant:
Inventor:
Chester Groby, Nol, SW;
Assignee:
Aktiebolaget Tudor, Sundbyberg, SW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156 69 ; 156304 ; 156306 ; 156499 ; 215232 ; 220359 ;
Abstract
The edge of a cover is welded to the edge of a vessel by disposing a multi-section, separable welding tool therebetween so that substantially the entire vessel opening is uncovered. The edges are heated by the welding tool. Thereafter, the edges and tool are separated to allow the sections of the tool to be separated without passing across the vessel opening. Then the edges are joined together. The cover can include a depending lip which bears against an inside wall of the vessel during the heating, displacing and joining steps to maintain proper alignment between the cover and the vessel.