US2544112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered battery plate and process of making
Assignee: Accumulatoren Fabriek Varta NV
•
Filing: 1949-01-05
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Granted: 1951-03-06
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Expires: 1969-01-05
Abstract
No abstract record available.
Inventors
- 👤 Schneider Friedrich August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/10; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE PROCESS FOR THE MANUFACTURE OF ACCUMULATOR PLATES, CARRYING CONDUCTING LUGS, SINTERED FROM METAL POWDER, IN PARTICULAR FOR ALKALINE ACCUMULATORS, IN WHICH A PIECE OF METAL GAUSE AND THEN A LAYER OF METAL POWDER IS SINTERED, CHARACTERIZED IN THAT THE GRID IS CHOSEN LARGER THAN THE FINISHED PLATE INCLUDING ITS CONDUCTING LUG AND THE PIECE OF GAUZE LARGER AT LEAST THAN THE AND THE PIECE OF GAUZE LARGER AT LEAST THAN THE FINISHED PLATE WITHOUT ITS CONDUCTING LUG, AND THAT AFTER A LIGHT SINTERING OF THE POWDER THE POROUS MATERIAL THEREBY OBTAINED IS SUBJECTED TO A PRESSING OPERATION IN WHICH THE POROUS MATERIAL ALONG THE EDGE OF THE GRID IS HIGHLY COMPRESSED AND THE POROUS MATERIAL IN THE REMAINING AREA OF THE GRID IS SUBJECTED ONLY TO SUCH LESSER PRESSURE THAT THE DESIRED THICKNESS OF THE POROUS MATERIAL IS ATTAINED, WHEREUPON THE SINTERING IS REPEATED, AND THE PLATE IS PUNCHED TO THE DESIRED SHAPE.
Claim 2
Dependent Claim
154 words
THE PROCESS FOR THE MANUFACTURE OF ACCUMULATOR PLATES, CARRYING CONDUCTING LUGS, SINTERED FROM METAL POWDER, IN PARTICULAR FOR ALKALINE ACCUMULATORS, IN WHICH A PIECE OF METAL GAUSE AND THEN A LAYER OF METAL POWDER IS SINTERED, CHARACTERIZED IN THAT THE GRID IS CHOSEN LARGER THAN THE FINISHED PLATE INCLUDING ITS CONDUCTING LUG AND THE PIECE OF GAUZE LARGER AT LEAST THAN THE AND THE PIECE OF GAUZE LARGER AT LEAST THAN THE FINISHED PLATE WITHOUT ITS CONDUCTING LUG, AND THAT AFTER A LIGHT SINTERING OF THE POWDER THE POROUS MATERIAL THEREBY OBTAINED IS SUBJECTED TO A PRESSING OPERATION IN WHICH THE POROUS MATERIAL ALONG THE EDGE OF THE GRID IS HIGHLY COMPRESSED AND THE POROUS MATERIAL IN THE REMAINING AREA OF THE GRID IS SUBJECTED ONLY TO SUCH LESSER PRESSURE THAT THE DESIRED THICKNESS OF THE POROUS MATERIAL IS ATTAINED, WHEREUPON THE SINTERING IS REPEATED, AND THE PLATE IS PUNCHED TO THE DESIRED SHAPE.
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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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |