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:
Apr. 22, 1997
Filed:
Apr. 11, 1995
Ernst Tanner, Neuhausen a. Rhf., CH;
Jorg Wermelinger, Schaffhausen, CH;
Georg Fischer Rohrleitungssysteme AG, Schaffhausen, CH;
Abstract
A method of manufacturing by welding a shaped workpiece, which is formed of a plastic material and which consists of a tubular part having a radial bore and a union weldable to the tubular part in a region of the radial bore, includes bringing an end face surface of the union into abutting engagement with an outer circumference of the tubular part in the region of the radial bore, and heating a circular region around the radial bore of the tubular part and the end face surface of the union by heat radiation, with subsequent pressing the two parts against each other. The apparatus for implementing the method includes first and second clamping devices for supporting the union and the tubular part, respectively, with the second clamping device having a support member having a shape corresponding to an inner profile of the tubular part, and a pin supported in the support member for displacement in a direction transverse to a longitudinal axis of the support member, and a heating device for heating the two parts.