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. 17, 1981
Filed:
Apr. 24, 1979
Bertil Roos, Stenungsund, SE;
Anders Ullman, Ljungaverk, SE;
Perma Scand AB, Ljungaverk, SE;
Abstract
Filter frame (1), intended to be inserted in filter cloths of flexible materials shaped as bags, which bags during filtration are percolated by the treated fluid from the outside and inwards, the frame comprising two perforated and corrugated plates (2) placed against each other so that the ridges of one plate are in contact with the valleys of the other plate and linear contact between the plates is formed and between which lines and the surfaces of the plates channels for the filtrate are formed and an outlet (5) for collecting the filtrate, whereby the outlet opens out into one of the channels. The perforations are, in order to obtain a good flexibility and separating effect, formed as holes in a net of expanded metal.