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. 23, 1997
Filed:
Jan. 05, 1995
Applicant:
Inventors:
Erasmo Porfido, Schaffhausen, CH;
Michael Bamberger, Gailingen, DE;
Assignee:
Georg Fischer Rohrleitungssysteme AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B27G / ; B31F / ; B32B / ;
U.S. Cl.
CPC ...
1563797 ; 1563042 ; 1563046 ; 1562742 ; 219535 ; 219544 ;
Abstract
A fitting formed as a welding sleeve has, preferably, two heating elements and is provided in the region of the plug contacts with a plate which can be inserted into a recess. On the plate is arranged a resistor and the connections for measuring the ohmic resistance by means of a welding apparatus. By measuring the resistance, the type of the fitting can be identified and the current to be fed to the welding apparatus determined.