Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-08-19
1988-11-01
Hearn, Brian E.
Metal working
Method of mechanical manufacture
Electrical device making
424 41, 424 46, H07M 600, H07M 486
Patent
active
047809540
ABSTRACT:
As was described above, the present invention makes it possible to achieve a sufficient diminution of the effect of the water-repellent characteristics of polytetrafluoroethylene used as a binding agent. Accordingly, the mixture ratio of polytetrafluoroethylene can be increased so that a sufficient film strength is obtained. Furthermore, a high foam pressure is obtained by forming a fine fibrilized net of polytetrafluoroethylene. Moreover, since the amount of polytetrafluoroethylene used is thus large, the molding characteristics of the product are favorable, and the yield can be increased. Accordingly, a highly reliable product can be obtained at a high yield. As a result, the present invention has the effect of improving the performance and reliability of the fuel cell as a whole, and of increasing the useful life and reducing the cost of the fuel cell. Accordingly, the present invention has great industrial merit.
REFERENCES:
patent: 3575718 (1971-04-01), Adlhart et al.
patent: 4529671 (1985-07-01), Kahara et al.
patent: 4623415 (1986-11-01), Kahara et al.
Hearn Brian E.
Japan Gore-Tex Inc.
Kalafut Stephen J.
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