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:
Mar. 22, 1994
Filed:
Aug. 21, 1992
Ulrich Bischofberger, Stuttgart, DE;
Dieter Muller-Schwelling, Fellbach, DE;
Ernst Pfleiderer, Backnang, DE;
Mahle GmbH, Stuttgart, DE;
Abstract
In a process for cleaning short mineral fibers in which the fibers contaminated with foreign bodies are separated from the foreign bodies, at least starting with a certain size, whereby mechanical damage to the fibers is avoided. For this purpose, the crude fiber material to be cleaned is added to a carrier medium which is set in a flowing motion and subsequently passed along a separation apparatus with at least one slot-like recess in the direction of the longitudinal extension of the recess. Thus, at least part of the carrier medium passes from an upstream side through the recess, together with the fibers, to a downstream side. In this way, a fiber filtrate is produced, of which the degree of purity is solely determined by the width of the recess. The carrier medium mixed with the crude material can be circulated in the cleaning process, with the carrier medium separated from the clean fiber filtrate being continuously returned to said circulation as well.