US2739997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery
Assignee: University of Michigan (System)
•
Filing: 1952-04-15
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Granted: 1956-03-27
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Expires: 1972-04-15
Abstract
No abstract record available.
Inventors
- 👤 Leo L Carrick
- 👤 John M Stapleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:04
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/68; H01M50/00; H01M50/50; H01M50/528; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A STORAGE BATTERY OF THE LEAD ACID TYPE INCLUDING A CASING PARTITIONED INTO A PLURALITY OF CELLS, A PLURALITYOF APERTURE BRIDGE MEMBERS POSITIONED IN THE BOTTOM OF EACH CELL, AND A PLURALITY OF ALTERNATELY DISPOSED POSITIVE AND NEGATIVE PLATES POSITIONED AT RIGHT ANGLES TO THE BRIDGE MEMEBRS, EACH OF SAID PLATES COMPRISING A LIGHT WEIGHT, FLEXIBLE, ELECTRICALLY CONDUCTIVE METAL GRID HAVING A DENSIFIED TIGHTLY ADHERENT COATING OF PURE LEAD THEREON, A DIELECTRIC SEPARATOR DISPOSED BETWEEN EACH POSITIVE AND NEGATIVE PLATE AND RESTING ON THE BRIDGE MEMBERS, EACH SEPARATOR HAVING A PLURALITY OF SPACED RIBS EXTENDING TOWARD THE ADJACENT POSITIVE PLATE TO DEFINE CHANNELS FOR THE FLOW OF ELECTROLYTE SO AS TO ASSIST IN CARRYING AWAY GAS EVOLVED AT THE SURFACE OF THE POSITIVE PLATES, A STRAP MEMBER INTERCONNECTING THE POSITIVE PLATES AND ANOTHER STRAP MEMBER INTERCONNECTING THE NEGATIVE PLATES, EACH STRAP MEMBER COMPRISING AN INTEGRAL POST AND BAR MEMBER FORMED OF A LIGHWEIGHT ELECTRICALLY CONDUCTIVE METAL,
Claim 2
Dependent Claim
156 words
A STORAGE BATTERY OF THE LEAD ACID TYPE INCLUDING A CASING PARTITIONED INTO A PLURALITY OF CELLS, A PLURALITYOF APERTURE BRIDGE MEMBERS POSITIONED IN THE BOTTOM OF EACH CELL, AND A PLURALITY OF ALTERNATELY DISPOSED POSITIVE AND NEGATIVE PLATES POSITIONED AT RIGHT ANGLES TO THE BRIDGE MEMEBRS, EACH OF SAID PLATES COMPRISING A LIGHT WEIGHT, FLEXIBLE, ELECTRICALLY CONDUCTIVE METAL GRID HAVING A DENSIFIED TIGHTLY ADHERENT COATING OF PURE LEAD THEREON, A DIELECTRIC SEPARATOR DISPOSED BETWEEN EACH POSITIVE AND NEGATIVE PLATE AND RESTING ON THE BRIDGE MEMBERS, EACH SEPARATOR HAVING A PLURALITY OF SPACED RIBS EXTENDING TOWARD THE ADJACENT POSITIVE PLATE TO DEFINE CHANNELS FOR THE FLOW OF ELECTROLYTE SO AS TO ASSIST IN CARRYING AWAY GAS EVOLVED AT THE SURFACE OF THE POSITIVE PLATES, A STRAP MEMBER INTERCONNECTING THE POSITIVE PLATES AND ANOTHER STRAP MEMBER INTERCONNECTING THE NEGATIVE PLATES, EACH STRAP MEMBER COMPRISING AN INTEGRAL POST AND BAR MEMBER FORMED OF A LIGHWEIGHT ELECTRICALLY CONDUCTIVE METAL,
References Cited (Backward Citations)
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US543055A
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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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |