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:
Jan. 13, 1976
Filed:
Jun. 10, 1974
Hermann Berstorff Maschinenbau GmbH, Hannover-Kleefeld, DT;
Bison-Werke Bahre & Greten GmbH & Co. KG, Springe, DT;
Abstract
Apparatus for the continuous production of chipboard, fibreboard or like panels, comprising a tensioned endless steel belt guided over a plurality of rollers and partially around a heated revolvable press drum such that said rollers press the belt against said drum, sprinkler apparatus disposed over a portion of the belt which extends horizontally before said drum in the direction of movement of the belt such that material to form said panels sprinkled onto said portion of the belt is pressed between the belt and the drum to form a web of material, wherein at least one of said plurality of rollers has over its width a convexly ground surface, whereby panels produced on the apparatus can have substantially uniform thickness and weight. The apparatus may include heating and/or cooling means for regulating the temperature of longitudinally extending zones of the belt and/or peripherally extending zones of said drum and/or said rollers thereby, due to thermal expansion or contraction, to regulate the tension in said longitudinally extending zones of said belt or to change the contour of the peripheral faces of said drum and said rollers to assist production of panels of uniform density and thickness across their width.