US3143150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric for fourdrinier machines
Assignee: Individual
•
Filing: 1961-10-18
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Granted: 1964-08-04
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Expires: 1981-10-18
Abstract
No abstract record available.
Inventors
- 👤 William E Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:35
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A WOVEN FOURDRINIER FABRIC COMPRISING A PLURALITY OF SPACED WARP THREADS INTERWOVEN WITH A PLURALITY OF SPACED WEFT THREADS WHEREIN EACH WEFT THREAD PASSES ALTERNATELY OVER A PAIR OF WARP THREADS AND UNDER A PAIR OF WARP THREADS IN A REPEATED PATTERN THAT INCLUDES KNUCKLES IN BOTH THE WEFT AND WARP THREADS AND DEFINES AN OPEN AREA BETWEEN THE SPACED THREADS, SAID WEFT THREADS BEING OF A MATERIAL AT LEAST SUBSTANTIALLY AS ABRASIVE RESISTANT AS SAID WARP THREADS AND WITH THE KNUCKLES OF THE WEFT THREADS BEING AT LEAST SUBSTANTIALLY AS HIGH AS THE KNUCKLES OF THE WARP THREADS, THE FABRIC HAVING MORE WEFT THREADS THAN WARP THREADS PER SQUARE INCH OF FABRIC, AND THE OPEN AREA OF THE FABRIC BEING FROM ABOUT 13% TO ABOUT 20%.
Claim 2
Dependent Claim
127 words
A WOVEN FOURDRINIER FABRIC COMPRISING A PLURALITY OF SPACED WARP THREADS INTERWOVEN WITH A PLURALITY OF SPACED WEFT THREADS WHEREIN EACH WEFT THREAD PASSES ALTERNATELY OVER A PAIR OF WARP THREADS AND UNDER A PAIR OF WARP THREADS IN A REPEATED PATTERN THAT INCLUDES KNUCKLES IN BOTH THE WEFT AND WARP THREADS AND DEFINES AN OPEN AREA BETWEEN THE SPACED THREADS, SAID WEFT THREADS BEING OF A MATERIAL AT LEAST SUBSTANTIALLY AS ABRASIVE RESISTANT AS SAID WARP THREADS AND WITH THE KNUCKLES OF THE WEFT THREADS BEING AT LEAST SUBSTANTIALLY AS HIGH AS THE KNUCKLES OF THE WARP THREADS, THE FABRIC HAVING MORE WEFT THREADS THAN WARP THREADS PER SQUARE INCH OF FABRIC, AND THE OPEN AREA OF THE FABRIC BEING FROM ABOUT 13% TO ABOUT 20%.
References Cited (Backward Citations)
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Cited
US1525532A
Cited
US1927498A
Cited
US2122592A
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US2357492A
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |