Bipolar collector plates
Abstract
Abstract A BIPOLAR COLLECTOR PLATE HAVING VERTICALLY ORIENTED RIDGES AND GROOVES THAT ARE HEMISPHERICAL IN CROSS-SECTION. THE ADJOINING RIDGES ARE CONNECTED BY CROSS-GROOVES OF A LESSER DEPTH THAN THE VERTICAL RIDGES AND GROOVES. THE RANGE OF RADIUS OF CURVATURE OF THE RIDGES IS CRITICAL AND VARIES BETWEEN 0.25 AND 0.02 INCH. THE PLATES MAY BE OF A SINGLE MATERIAL, PREFERABLY COLUMBIUM, TANTALUM, STAINLESS STEEL OR NICKEL, OR MAY BE OF A COMPOSITE MATERIAL SUCH AS PARTICLES OF CARBON, CARBIDES, NITRIDES AND BORIDES IMPREGNATED WITH A BINDER SUCH AS POLY-TETRAFLUOROETHYLENE, POLY-CHLOROTRIFLUOROETHYLENE, COPOLYMERS OF POLY-CHLOROTRIFLUOROETHYLENE WITH VINYLIDENE FLUORIDE, POLYOLEFINS, OR AN EPOXY, POLYESTER OF PHENOLIC RESIN. THE PLATE MAY ALSO BE A LAMINATE HAVING A HEAT CONDUCTIVE CORE. AN EMBODIMENT HAS EXTENDED PERIPHERAL EDGES FORMING A HEAT CONDUCTIVE FLANGE FOR CONTACT WITH A HEAT CONDUCTIVE FLUID TO CONTROL THE OPERATING TEMPERATURE OF THE CELL.
Inventors
- 👤 Frank B Leitz Jr
- 👤 Donald K Fleming
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |