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. 13, 1993
Filed:
Jun. 19, 1991
Wilhelm Reil, Bensheim, DE;
Ulrich Deutschbein, Muhltal, DE;
Gerd Knobloch, Griesheim, DE;
Udo Liebram, Pfungstadt, DE;
Tetra Alfa Holdings S.A., Pully, CH;
Abstract
A device for heating plastic plates using contact heat and hot gases which are supplied to the plastic plate to be heated by carrier plates is provided. Therein, two carrier plates are movable relative to each other vertically with respect to their common contact surface. Gas distribution conduits also open in the contact surface. In order that the plastic plates which are to be heated can be removed properly from the carrier plates, so that damage to the heating device is avoided, each contact surface of both carrier plates is surrounded by a frame-like, closed outer edge without mouth openings for the gas distributions conduits.