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:
Jul. 26, 1977
Filed:
Oct. 01, 1976
Friedrich Hanstein, Gross-Zimmern, DT;
Theodor Peter Moench, Griessheim near Darmstadt, DT;
Rohm GmbH, Darmstadt, DT;
Abstract
A method for contouring the surface of a thermoplastic synthetic resin sheet, which comprises contacting said sheet, warmed to the softening temperature of the synthetic resin, with a rigid structure having perforations therein and having a sheet of rubber or of a rubber-like synthetic resin foam in contact therewith on that side thereof which is opposite to said thermoplastic synthetic resin sheet, under pressure such that said synthetic resin sheet, in a thermoplastic condition, and said sheet of rubber or of synthetic resin foam penetrate into said perforations and come into substantially full surface contact with each other in said perforations.