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. 28, 1995
Filed:
Sep. 20, 1993
Peter Hagqvist, Alvsjo, SE;
AB Electrolux, Stockholm, SE;
Abstract
A method of producing a fluid purifier membrane module, sheets of membrane material are disposed in layers with intermediate spacer elements in a manner to obtain mutually alternating spaces for contaminated and purified fluid respectively. Mutually adjoining sheets of membrane material (12) are joined together in pairs in a manner to obtain membrane units (10) which include closed cavities (28). The membrane units (10) with associated spacer elements (18, 34) are arranged in a stack. The mutually facing outer surfaces of the membrane units are joined together in zones and in a fluid-tight fashion along at least one line (36) which extends through the walls of the membrane units. The membrane units are perforated along the line in a manner to obtain through the membrane units a passageway (32) which communicates with the cavities (28).