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:
Jan. 06, 1976
Filed:
Apr. 25, 1974
Wilfried Schulte, Hofheim, Taunus, DT;
Horst Sowa, Frankfurt am Main, DT;
Klaus Kerger, Schwalbach, Taunus, DT;
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
A filter unit for wet and dry filtration comprising a hollow shaft provided with ribs in parallel position with respect to the longitudinal axis of the said shaft, filter discs covered by a filtering material, said discs being stacked over and enclosing the shaft in positive connection therewith, the lower surfaces of the said filter discs having radial elevations the height of which corresponds to the distance between two adjacent discs, spacer rings provided with cams arranged between each filter disc and the respective filtering material, the said spacer rings enclosing the hollow shaft and the free cross sectional area between the cams of the said spacer rings diminishing from one disc to the other.