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:
Feb. 13, 2001
Filed:
Sep. 17, 1999
Jouko Hautala, Tampere, FI;
Juhani Valli, Tampere, FI;
Timo Vuorinen, Tampere, FI;
Jorma Petäjistö, Tampere, FI;
Valment Corporation, Helsinki, FI;
Abstract
The invention relates to a method for controlling a multi-step screening apparatus (,), the method comprising controlling other accept, reject and dilution flows in relation to the flow measured in the accept channel (,) of the first screening step (,). Thus a simpler control unit (,) can be used and accept of higher quality can be obtained than before. The invention further relates to an apparatus for controlling a multi-step screening apparatus (,), said apparatus comprising a control unit (,) arranged to measure the flows of all accept, reject and dilution water channels (,) and to adjust the flow of the other channels on the basis of the flow of the accept channel of the first step.