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:
Dec. 22, 1981
Filed:
Dec. 11, 1980
Berndt Greten, Springe, DE;
Abstract
A heated platten press for the manufacture of particle board features a pair of heatable press plattens 1 and 2 which are located between relatively movable press beams. The platten 1 is constructed as a rigid platten to define a flat reference surface for one side of the board to be pressed and is constructed so that it does not deflect either mechanically or thermally during operation of the press. The second press platten 2 is constructed to be elastically deflectable and is supported on a plurality of individual piston-in-cylinder arrangements 4 forming an array of adjacent substantially contiguous support fields which are substantially uniformly distributed over the whole area of the compensation platten. In operation a board is pressed and the deviation in thickness of the board from the nominal thickness is measured at points corresponding to the positions of the piston-in-cylinder arrangements within the array. The measured deviations are then used to control the individual piston-in-cylinder arrangements so as to correct the deviations in thickness.