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:
Feb. 16, 1993
Filed:
May. 29, 1991
Lothar Machule, Weissbach, DE;
Hans R Obermeier, Saaldorf, DE;
Konrad Hornschuch AG, both of, DE;
HFT-Obermeier Maschinenbau GmbH, both of, DE;
Abstract
A method for welding at least one region of an overlay sheet (16) to a receiving surface of a carrier layer (14) by means of high frequency energy. In the method, on the surface remote from the receiving surface of the carrier layer (14) a foil (12) of electrically conductive material is disposed. The overlay sheet (16) is placed at least on a part of the receiving surface of the carrier layer (14). A high frequency electrode (18, 20) is placed onto the overlay sheet (16) in the region to be welded to the carrier layer (14) and a ground electrode (22) is placed onto a region of the overlay sheet (16) not to be welded to the carrier layer (14) or onto a part of the receiving surface not covered by the overlay sheet (16), said ground electrode (22) having an area which is greater than that of the high frequency electrode (18, 20). The high frequency energy is then switched on while the high frequency electrode ( 18, 20) is held with pressure against the overlay sheet (16).