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:
Sep. 10, 1991
Filed:
Nov. 16, 1990
Applicant:
Inventors:
Paul von der Haar, Gottingen, DE;
Madhukar Pandit, Kaiserslautern, DE;
Hermann Merz, St. Ingbert, DE;
Assignee:
Sartorius AG, Gottingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01G / ; G01G / ; G01G / ; B67D / ;
U.S. Cl.
CPC ...
177 50 ; 177123 ; 177185 ; 222 55 ;
Abstract
The gravimetric control of a mass flow from or into a container located on a balance using a pulsating dosing pump, the output signal of the balance is digitally filtered in such a manner that the course in time of the mass flow is cyclically estimated from the filtered wighing signal. This estimated value of the course in time of the mass flow is used to calculate the course in time of an auxiliary mass flow which compensates the pulsation of the mass flow of the pulsating dosing pump and a speed course is calculated from the course in time of the auxiliary mass flow for driving an auxiliary dosing pump.