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:
Nov. 03, 1987
Filed:
May. 27, 1986
Wilfried Keck, Heidenheim, DE;
Werner Witek, Appleton, WI (US);
J. M. Voith GmbH, Heidenheim, DE;
Abstract
A waste paper processing system in which a fibrous suspension of waste paper is cleaned and sorted. The fine cleaning of the suspension is carried out by means of one or more conical centrifuges in a subsidiary stream which branches off from the mainstream and is later recombined therewith. The portion containing the largest content of coarse substances is introduced from a vertical sorter located in the mainstream into the subsidiary stream in which it is sorted and cleaned. There is practically no need to process the waste from the conical centrifuges and the conical centrifuge unit can be designed to be substantially smaller and thus more economical in terms of energy because of the smaller flow of material therethrough.