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:
Aug. 21, 1979
Filed:
Aug. 15, 1977
Gregory J Sandelli, Newington, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An economical method for fabricating a porous electrochemical cell substrate having ribs on one side comprises molding the substrate by loading a die of the proper configuration with a predetermined amount of a dry mixture of thermosetting resin and carbon fibers. The mixture is partially cured using heat and low pressure and then is fully cured up to at least 1100.degree. C. to convert all the resin to glassy carbon. The amount of mixture loaded into the die is preselected to yield a finished part having a porosity of at least 75%. Preferably the ribbed substrate is wetproofed in all areas except the ribs which are used to store excess electrolyte during cell operation.