US3738892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heating apparatus for sealing tube-like containers
Assignee: Park Ohio Holdings Corp
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Filing: 1971-05-14
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Granted: 1973-06-12
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Expires: 1991-05-14
Abstract
Abstract A method and apparatus for sealing by induction the ends of tube-like containers comprised of electrically nonconductive material wherein a thin layer of an electrically conductive material is disposed at least along one side of the area to be sealed which area is then inductively heated to effect adhesion between the contacting surfaces. The area so joined is then pressed together at least after being heated.
Inventors
- 👤 E Curcio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:34
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3656; B29C65/3672; B29C65/3676; B29C65/368; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/43123; B29L; B29L2009/00; B29L2009/003; B29L2023/00; B29L2023/20; B29L2031/00; B29L2031/56; B29L2031/565
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |