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. 01, 1977
Filed:
Aug. 12, 1976
Applicant:
Inventor:
Chester Groby, Nol, SW;
Assignee:
Aktiebolaget Tudor, Sundbyberg, SW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156499 ; 156 69 ; 156306 ; 429153 ;
Abstract
Apparatus for welding together a cover and a vessel formed of thermoplastic material comprises a pair of heating cheeks. Each heating cheek has two arms disposed in essentially L-shaped arrangement. The cheeks are adapted to be disposed between the cover and vessel to heat the respective edges thereof. The cheeks are mounted for movement in separate directions from between the cover and vessel without passing across the opening of the vessel. Therefore, the time required to remove the welding apparatus from between the cover and vessel is reduced, and there need be no concern for hitting elements projecting upwards from the vessel.