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. 24, 1987
Filed:
Apr. 04, 1985
Friedrich Bottger, Haan, DE;
Klaus Gerhardt, Rheurdt, DE;
G. Siempelkamp GmbH & Co., Krefeld, DE;
Abstract
A belt-type press for making particleboard has a longitudinal row of transverse frames through which pass upper and lower longitudinally extending press beams extending along and carried on the row of frames flanking respective heated press platens in turn flanking stretches of respective upper and lower belts driven to move a mat of particles to be pressed along the path in a transport direction. The upper beam is pressed down by a plurality of substantially identical hydraulic actuators to compress the mat between the belts with a relatively high pressure in an upstream compression region of the press and with a relatively low pressure in a downstream compression region of the press. The upper platen and beam have a downstream calibration portion and an upstream compression portion, the latter being elastically deflectable upward relative. Upper and lower vertically engageable abutments operatively engaged between the upstream portions of the upper platen and beam and the frame limit downward displacement of the upstream portions relative to the frame. In addition at least one abutment operatively engageable between the downstream portions of the upper beam and platen limits downward displacement of same below a predetermined lower position. Thus the thickness of the finished workpiece as it exits the press is established by the abutment of the downstream portions.