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:
Nov. 23, 1976
Filed:
Oct. 31, 1975
Burnett M Schneider, Wind Lake, WI (US);
Abstract
A method is provided for fabricating separators, particularly thin cell electro-membrane separators used in electrodialysis stacks for the desalination of water. The method includes placing a master stencil or mask on top of a plastic mesh which is laid out on a rigid backing sheet and pouring massive amounts of a curable polymer such as silicone rubber through the hole pattern formed in the stencil. The polymer is then spread out to fill the pattern, the stencil removed and a cover sheet applied. The polymer is then pressed into the pores of the mesh using a roller applied against the cover sheet. The sandwich of the mesh and cover and backing sheets is placed into a pile between metallic sheets, and the pile is compressed during the curing of the polymer. The cover and backing sheets are then scupped off and the polymer impregnated mesh die cut to produce the required edge shape and flow holes.