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. 01, 1987
Filed:
Nov. 22, 1985
Josef Ziller, Waldstetten, DE;
Schenk Filterbau Gesellschaft mit beschrankter Haftung, Waldstetten, DE;
Abstract
A rotary disk filter element for a beverage filter for biological filtration. The filter element includes a closed base plate that is in the form of a ring-like member and on which is supported a filter fabric, with a support fabric being interposed between the base plate and the filter fabric. The filter fabric is secured to the base plate between an outwardly disposed retaining member and an inwardly disposed collar member. The collar member is provided with a supply opening for a wash fluid, especially a water/air mixture that is flushed through the filter fabric, counter to the direction of filtration, for removing filter residue for the general cleaning of the filter fabric. The filter fabric is secured to the base plate and to the support fabric at a plurality of point locations. This divides the free support or clamping lengths of the filter fabric into a number of relatively short regions that prevent the filter fabric from being overstretched and bulged during flushing. The formation of folds and damage to the filter fabric is thus prevented.