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:
May. 18, 1976
Filed:
Dec. 10, 1974
Kurita Machinery Manufacturing Co. Ltd., Osaka, JA;
Abstract
A filter plate assembly in which a filter wall has a large number of small pyramidal projections on its opposite surfaces, a peripheral frame portion supporting the outer periphery of the filter wall and formed with a prefilt passage and a filtrate passage extending therethrough, and a filter medium supported by the peripheral frame portion and covering the opposite surfaces of the filter wall. The peripheral frame portion has a rigid frame and elastic frames sandwiching the rigid frame and joined thereto. Each of the elastic frames is provided, in its surface, with an open groove to form a prefilt inlet port through which the prefilt passage communicates with a prefilt chamber defined by the filter plate and another filter plate to be fitted therewith, whereby clogging of the prefilt inlet port is eliminated.