US3891533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell structure
Assignee: National Aeronautics and Space Administration
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Filing: 1974-02-08
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Granted: 1975-06-24
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Expires: 1994-02-08
Abstract
Abstract An electrolytic cell is made up of a stack of polysulfone plates faced with sheets of platinum bonded thereto by silicone rubber and mechanically secured to their plates by Teflon screws having heads serving as spacers between opposed platinum sheets.
Inventors
- 👤 James C Administrator Fletcher
- 👤 David F Putnam
- 👤 Richard L Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:42
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/13; C25B9/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
IN AN ELECTROLYTIC CELL ASSEMBLY COMPRISING A PLURALITY OF SPACED PARALLEL INSULATING PLATES, WITH ADJACENT PLATES DEFINING FLOW PATHS THEREBETWEEN, SAID PLATES HAVING ELECTRICALLY CONDUCTIVE SHEETS SECURED THERETO, THE IMPROVEMENT COMPRISING: ADHESIVE MEANS FOR SECURING SAID CONDUCTIVE SHEETS TO SAID PLATES AND FOR SEALING EDGES OF SAID CONDUCTIVE SHEETS THEREBY PROTECTING SAID CONSDUCTIVE SHEETS FROM ELECTROLYTIC ATTACK; HEADED SCREW MEANS OF INSULATING MATERIAL FOR SECURING EACH OF SAID CONDUCTIVE SHEETS TO ITS RESPECTIVE PLATE AND FOR PREVENTING BUCKLING OF SAID CONDUCTIVE SHEET BY MAINTAINING ING ADHESION BETWEEN SAID CONDUCTIVE SHEET, SAID ADHESIVE MEANS AND SAID INSULATING PLATE AND FOR MAINTAINING A PREDETERMINED SPACING BETWEEN SAID PLATES; AND RESILIENT GASKET MEANS BETWEEN SAID ADJACENT PLATES DEFINING PREDETERMINED FLOW PATHS THEREBETWEEN.
Claim 2
Dependent Claim
119 words
IN AN ELECTROLYTIC CELL ASSEMBLY COMPRISING A PLURALITY OF SPACED PARALLEL INSULATING PLATES, WITH ADJACENT PLATES DEFINING FLOW PATHS THEREBETWEEN, SAID PLATES HAVING ELECTRICALLY CONDUCTIVE SHEETS SECURED THERETO, THE IMPROVEMENT COMPRISING: ADHESIVE MEANS FOR SECURING SAID CONDUCTIVE SHEETS TO SAID PLATES AND FOR SEALING EDGES OF SAID CONDUCTIVE SHEETS THEREBY PROTECTING SAID CONSDUCTIVE SHEETS FROM ELECTROLYTIC ATTACK; HEADED SCREW MEANS OF INSULATING MATERIAL FOR SECURING EACH OF SAID CONDUCTIVE SHEETS TO ITS RESPECTIVE PLATE AND FOR PREVENTING BUCKLING OF SAID CONDUCTIVE SHEET BY MAINTAINING ING ADHESION BETWEEN SAID CONDUCTIVE SHEET, SAID ADHESIVE MEANS AND SAID INSULATING PLATE AND FOR MAINTAINING A PREDETERMINED SPACING BETWEEN SAID PLATES; AND RESILIENT GASKET MEANS BETWEEN SAID ADJACENT PLATES DEFINING PREDETERMINED FLOW PATHS THEREBETWEEN.
Claim 3
Dependent Claim
32 words
An electrolytic cell assembly as defined in claim 1 wherein said adhesive means comprises a layer of silicone rubber of sufficient thickness to insure sealing of said conductive sheet edges upon compression.
Claim 4
Dependent Claim
21 words
An electrolytic cell as defined in claim 1 wherein said plates are of polysulfone and said conductive sheets are of platinum.
Claim 5
Dependent Claim
16 words
An electrolytic cell assembly as defined in claim 3 wherein said headed screws are of tetrafluoroethylene.
Claim 6
Dependent Claim
127 words
An electrode assembly for an electrolytic cell comprising: a plate of insulating material; a thin sheet of platinum overlying at least one face of said plate and secured thereto by a layer of silicone rubber; screw means of insulating material for securing said sheet to said plate and for preventing buckling of said thin sheet by maintaining adhesion between said thin sheet, plate, and layer of silicone; said screw means having a head extending outward from said thin sheet a predetermined distance and engaging an adjacent metal sheet to maintain a predetermined spacing between said adjacent plates; said layer of silicone rubber extending to the edges of said sheet for bonding said sheet to said plate and for sealing the edges of said sheet against electrolytic attack.
Claim 7
Dependent Claim
127 words
An electrode assembly for an electrolytic cell comprising: a plate of insulating material; a thin sheet of platinum overlying at least one face of said plate and secured thereto by a layer of silicone rubber; screw means of insulating material for securing said sheet to said plate and for preventing buckling of said thin sheet by maintaining adhesion between said thin sheet, plate, and layer of silicone; said screw means having a head extending outward from said thin sheet a predetermined distance and engaging an adjacent metal sheet to maintain a predetermined spacing between said adjacent plates; said layer of silicone rubber extending to the edges of said sheet for bonding said sheet to said plate and for sealing the edges of said sheet against electrolytic attack.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |