US3309228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid for positive plates for lead acid batteries
Assignee: Ford Motor Co
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Filing: 1963-04-02
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Granted: 1967-03-14
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Expires: 1983-04-02
Abstract
No abstract record available.
Inventors
- 👤 Vance H Dodson
- 👤 Joseph L Rooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:18
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/68; H01M4/685; C; C22; C22C; C22C11/00; C22C11/08; C22C11/10; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A LEAD-ACID TYPE STORAGE BATTERY HAVING IN ITS OPERATIONAL COMBINATION A POSITIVBE GRID COMPRISING ELEMENTAL LEAD AND ACTIVE MATERIAL COMPRISING LEAD DIOXIDE WITHIN AND SUPPORTED BY SAID GRID, THE IMPROVEMENT WHICH COMPRISES A LAYER OF CADMIUM BETWEEN SAID GRID AND SAID DIOXIDE AND COVERING A SIGNIFICANT PORTION OF THE SURFACES OF SAID GRID WHICH EXCEPT FOR INTERVENTION OF SAID LAYER WOULD BE IN CONTACT WITH SAID LEAD DIOXIDE, SAID LAYER BEING OF SUFFICIENT DEPTH AND EXTEND IN GRID COVERAGE TO PREVENT SIGINIFICANT SOLID STATE REACTION OF SAID GRID WITH SAID LEAD DIOXIDE BEFORE SAID BATTERY IS CHARGED WITH ELECTROLYTE AND INSUFFICIENT TO SIGNIFICANTLY INTERFERE WITH THE NORMAL FUNCTION OF SAID GRID, SAID ACTIVE MATERIAL AND SAID BATTERY, WHEN SAID BATTERY IS CHARGED WITH A SULFURIC ACID ELECTROLYTE.
Claim 2
Dependent Claim
128 words
IN A LEAD-ACID TYPE STORAGE BATTERY HAVING IN ITS OPERATIONAL COMBINATION A POSITIVBE GRID COMPRISING ELEMENTAL LEAD AND ACTIVE MATERIAL COMPRISING LEAD DIOXIDE WITHIN AND SUPPORTED BY SAID GRID, THE IMPROVEMENT WHICH COMPRISES A LAYER OF CADMIUM BETWEEN SAID GRID AND SAID DIOXIDE AND COVERING A SIGNIFICANT PORTION OF THE SURFACES OF SAID GRID WHICH EXCEPT FOR INTERVENTION OF SAID LAYER WOULD BE IN CONTACT WITH SAID LEAD DIOXIDE, SAID LAYER BEING OF SUFFICIENT DEPTH AND EXTEND IN GRID COVERAGE TO PREVENT SIGINIFICANT SOLID STATE REACTION OF SAID GRID WITH SAID LEAD DIOXIDE BEFORE SAID BATTERY IS CHARGED WITH ELECTROLYTE AND INSUFFICIENT TO SIGNIFICANTLY INTERFERE WITH THE NORMAL FUNCTION OF SAID GRID, SAID ACTIVE MATERIAL AND SAID BATTERY, WHEN SAID BATTERY IS CHARGED WITH A SULFURIC ACID ELECTROLYTE.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |