US3726747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous-feed high-frequency gluing press
Assignee: Individual
•
Filing: 1970-05-25
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Granted: 1973-04-10
•
Expires: 1990-05-25
Abstract
Abstract A press continuously bonds strips edge-coated with glue in edge-to-edge relation with one other or with a structural panel to form a composite sheet of indefinite length. The press feeds the sheet, under compression applied in a feeding direction transverse to the strips, between planar electrode platens through which a high-frequency alternating current is applied to the sheet to thermo-set the glue. Pressure is also applied against the major surfaces of the sheet to prevent buckling of the strips as the glue is set.
Inventors
- 👤 P Zottu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:12
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/02; B27D1/025; B27M; B27M3/00; B27M3/0013; B27M3/0026; B27M3/0053; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1751
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |