Tablet press machine
US6866493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Feb 27, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2043/3477
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tablet press machine (100) comprises: a hopper (1) for feeding a powder or granular product (2) to a first disc (3a) that rotates about an axis (X) and is equipped with evenly distributed holes or dies (3); a second and third disc (4, 6) that are positioned above and below the first disc (3a), respectively, rotate about the axis (X) and support respective pluralities of upper and lower reciprocating punches (5, 7). The punches (5, 7) are driven towards and away from each other when they are aligned with the dies (3) in such a way as to compress the product (2). Each of the punches (5, 7) comprises a cylindrical shank (8), one end of which is equipped with a working head (10) and sealed protection means (11) acting on the cylindrical shank (8) itself. The sealed protection means (11) comprise, for each punch (5, 7), a concertinaed sleeve (12) covering the cylindrical shank (8) and having an annular portion (13) constituting its far end relative to the working head (10), forming an annular seal and providing also a removable element used to attach support means (14) that protrude from the respective disc (4, 6). The near end (15) of each concertinaed sleeve (12) relative to the wor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.