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:
Apr. 02, 1991
Filed:
May. 03, 1989
Juergen Hinzpeter, Schwarzenbek, DE;
Hans-Dieter Gruedelbach, Moelln, DE;
Wilhelm Fette GmbH, Schwarzenbek, DE;
Abstract
To monitor the pressing forces of an upper and lower piston of a tablet press which cooperate as a piston pair, in the currently-known process an average value formed from successive pressing force measurement results is compared with two adjustable tolerance bounds and that average value is correlated with two adjustable individual value limits which follow the course of this average value or are fixed. Maxima of individual pressing force measurements are compared with these individual value limits. To detect certain operational difficulties involving slight damage to an individual piston while avoiding tolerance ranges which are so narrow that frequent stopping of the press occurs piston pair average value limits, with which the piston pair average value of the pressing force is compared, are associated with the individual piston pairs. These piston pair average values are stored in a controlling computer which can stop the tablet press and indicate a faulty piston.