Patent US3565983A successfully refreshed from Google Patents.
US3565983A
Expired / Lapsed
US
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Process for the continuous production of tubular textile containers intended in particular for use in lead-acid storage batteries
Assignee: Individual
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Filing: 1967-10-25
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Granted: 1971-02-23
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Expires: 1987-10-25
Abstract
Abstract METHOD FOR CONTINUOUSLY FORMING PLASTIC IMPREGNATED FABRIC TUBING FOR USE IN FORMING LEAD-ACID STORAGE BATTERIES WHEREIN TWO SUPERPOSED LAYERS OF FABRIC JOINED AT SPACED APART LINES IS POSITIONED ON EXPANDABLE SHAPING ELEMENTS, THEN IMPREGNATED WITH A HARDENING MATERIAL AND THEN SHAPED BY EXPANSION OF THE SHAPING ELEMENTS WHICH ARE HELD IN THEIR EXPANDED CONDITIONS UNTIL THE HARDENING MATERIAL SETS. THEREAFTER THE SHAPING ELEMENTS ARE CONTRACTED AND THE RESULTANT FABRIC IS ADVANCED RELATIVE TO THE SHAPING ELEMENTS TO DISPOSE ANOTHER PORTION OF THAT FABRIC ON THE SHAPING ELEMENTS; AND THEREAFTER THE METHOD IS REPEATED WITH THE APPARATUS NECESSARY THEREFOR.
Inventors
- 👤 Ludwig Eigenmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:16
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/76; H01M4/765; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |