Patent US3809596A successfully refreshed from Google Patents.
US3809596A
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US
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Non-tear seams produced by radio frequency means
Assignee: Fitesa Simpsonville Inc
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Filing: 1972-03-14
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Granted: 1974-05-07
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Expires: 1992-03-14
Abstract
Abstract Layers of fabric containing thermoplastic fibers are bonded together by radio frequency means along a seam, the seam being comprised of fused thermoplastic fibers with the intensity of fusion varying from a maximum along a maximum bond area to a minimum along the edge of the seam to prevent the formation of a tear line between the fabric and the seam.
Inventors
- 👤 L Gidge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
D; D06; D06M; D06M23/00; D06M23/16; D06M23/18; B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/32; B29C66/324; B29C66/347; B29C66/3472; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/72; B29C66/729; B29C66/7294; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81413; B29C66/81427; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B29C66/71; B29C66/81415; B29C66/81419; B29C66/81421; B29C66/81422; B29K; B29K2313/00
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |