Patent US3568245A successfully refreshed from Google Patents.
US3568245A
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US
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Apparatus for making composition panels
Assignee: Individual
•
Filing: 1968-07-24
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Granted: 1971-03-09
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Expires: 1988-07-24
Abstract
Abstract AN APPARATUS FOR MAKING COMPOSITION PANELS CONSISTING OF SOLID CONSTITUENTS AND INITIALLY FLOWABLE HARDENABLE BINDING MATERIALS, COMPRISES TWO ENDLESS BELT ARRANGED TO BE DRIVEN IN MUTUALLY OPOSITE DIRECTIONS AND HAVING SPACED SUBSTANTIALLY COEXTENSIVE FACING STRINGS DEFINING BETWEEN THEMSELVES A GAP THROUGH WHICH A LAYER OF THE MATERIAL ADVANCES WITH THE BINDER IN FLOWABLE STATE. THE FACING STRINGERS OF THE BELTS EXERT PRESSURE UPON THIS LAYER FROM OPPOSITE SIDES THEREOF, AND MEANS IS PROVIDED FOR VARYING THIS PRESSURE. SURING TRAVEL THROUGH THE GAP THE BINDER HARDENS AND THE LAYER ISSUES AT THE DOWNSTREAM END OF THE GAP AS A SOLID PANEL.
Inventors
- 👤 Raimund Jetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:54
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/24; B30; B30B; B30B5/00; B30B5/04; B30B5/06
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |