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:
Dec. 07, 2004
Filed:
Jun. 09, 2003
Willi Niemerg, Oelde, DE;
Westfalia Separator AG, Oelde, DE;
Abstract
A centrifuge that includes a centrifugal drum having a drum part, a centrifuge chamber bottom, a drum cover, solid matter discharge openings in a jacket area of a drum bottom part, and a piston valve axially movably disposed in the drum bottom part. The piston valve is held in a closed position by springs supported at the drum bottom part. The piston valve is movable by a control medium introduced into an opening chamber between the piston valve and the centrifuge chamber bottom. The control medium can overcome the springs and open the solid matter discharge openings. The springs are made from an unalloyed spring steel and are substantially encapsulated by sleeves made of corrosion resistant material. The sleeves project on one side into the piston valve and, on the other side, into bores of a bottom area of the drum bottom part.