Patent · US Expired

Method for production monitoring with the manufacture of tablets in a rotary tabletting machine

US6319435A · kind A · utility

3Cited by

2References

5Claims

0Family size

Assignee

Wilhelm Fette GmbH · DE

Inventors

Jurgen Hinzpeter · Schwarzenbek, DE
Ingo Schmidt · Schwarzenbek, DE
Ulrich Gathmann · Hamburg, DE
Jörg Reitberger · Hamburg, DE
Joachim Greve · Pogeez, DE
Klaus-Peter Preuss · Eckernförde, DE

Key dates

Filing date	Sep 27, 1999
Grant date	Nov 20, 2001
Priority date	—
Expiry date	Sep 27, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB30B15/0094
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for the production monitoring with the manufacture of tablets in a rotary tabletting machine, with a row of upper and lower punches arranged in pairs, which cooperate with matrix bores, in which for each punch pair the maximum of the pressing force is measured, via a preselected number of readings (measuring row) an actual mean value is computed and compared to a nominal mean value and the supply of material to the individual matrix bores (filling degree) is changed when the deviation exceeds a predetermined measure, wherein before forming the mean value those pressing force readings of each measuring row, which significantly deviate with respect to other readings, are eliminated (freak value test).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.