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. 26, 2006
Filed:
Aug. 06, 2004
Roberto Trebbi, Castenaso, IT;
Hans Kramer, Köln, DE;
Roberto Trebbi, Castenaso, IT;
Hans Kramer, Köln, DE;
I.M.A. Industria Macchine Automatiche S.p.A., Ozzano Emilia, IT;
Abstract
A tablet press machine () comprises: a hopper () for feeding a powder or granular product () to a first disc () that rotates about an axis (X) and is equipped with evenly distributed holes or dies (); a second and third disc () that are positioned above and below the first disc (), respectively, rotate about the axis (X) and support respective pluralities of upper and lower reciprocating punches (). The punches () are driven towards and away from each other when they are aligned with the dies () in such a way as to compress the product (). Each of the punches () comprises a cylindrical shank (), one end of which is equipped with a working head () and sealed protection means () acting on the cylindrical shank () itself. The sealed protection means () comprise, for each punch (), a concertinaed sleeve () covering the cylindrical shank () and having an annular portion () constituting its far end relative to the working head (), forming an annular seal and providing also a removable element used to attach support means () that protrude from the respective disc (). The near end () of each concertinaed sleeve () relative to the working head () presents an enlarged annular portion () that engages with a matching annular groove () in the cylindrical shank () to provide a tight seal.