US3734795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Patch and seam for plastic belts
Assignee: Lindsay Wire Weaving Co
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Filing: 1971-04-23
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Granted: 1973-05-22
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Expires: 1991-04-23
Abstract
Abstract TWO PORTIONS OF WOVEN FABRIC CONTAINING POLYMERIC PLASTIC MATERIAL ARE JOINED TOGETHER BY PASSING A CURRENT OF ELECTRICITY THROUGH A CURRENT CONDUCTING MEMBER, WHICH IS IN CONTACT WITH THE POLYMERIC PLASTIC MATERIAL, UNTIL THE MEMBER IS HEATED SUFFICIENTLY TO SOFTEN THE POLYMERIC PLASTIC MATERIAL AND EMBED THE CONDUCTING MEMBER THEREIN. ONE ARTICLE MAY BE A SECTION OF WOVEN POLYMERIC PLASTIC MATERIAL WHICH SERVES AT A PATCH FOR A HOLE IN WOVEN POLYMERIC PLASTIC FABRIC OR AS A SEAM FOR A FOURDRINIER PAPER MAKING MACHINE. THE INVENTION INCLUDES A METHOD AS WELL AS THE PORTIONS JOINED BY THE METHOD.
Inventors
- 👤 D Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:17
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C65/00; B29C65/02; B29C65/34; B29C65/3404; B29C65/342; B29C65/3428; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/114; B29C66/1142; B29C66/432; B29C66/4324; B29C66/70; B29C66/72; B29C66/729; B29C65/3472; B29C65/3476; B29C65/348; B29C66/71; B29K; B29K2313/00; B29L; B29L2031/00; B29L2031/733
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |