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. 21, 1993
Filed:
Nov. 09, 1992
Applicant:
Inventors:
Ernst Tanner, Neuhausen a. Rhf., CH;
Jorg Wermelinger, Schaffhausen, CH;
Theo Gassner, Triesenberg, LI;
Assignee:
Georg Fischer Rohrleitungssysteme AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156499 ; 1563042 ; 1563046 ; 156503 ; 156580 ;
Abstract
An apparatus for end face welding of plastic parts that includes two spaces clamping devices for retaining the plastic parts, a heating device movable into an operative position between the clamping devices, and a stop element for retaining the heating device in its operating position, and in which the stop element is automatically disengaged from the heating device upon a return movement of a carriage supporting one of the clamping devices after heating of the ends of the parts to enable automatic return of the heating device to its initial position.