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:
May. 04, 1976
Filed:
Sep. 23, 1974
Applicant:
Inventor:
Helmut Landgraf, Rumeln-Kaldenhausen, DT;
Assignee:
Mannesmann A.G., Dusseldorf, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; F16L / ;
U.S. Cl.
CPC ...
156275 ; 156306 ; 285423 ;
Abstract
Surfaces of thermoplastic parts are welded by placing a star-shaped heating element in-between the parts. The element is a coiled wire jacketed in plastic which melts during the welding. The resulting bond covers a relatively large area. The method is used for providing a saddle flange to a thermoplastic tube.