US3746589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bubble free fiber reinforced plastic laminates by tamping operations
Assignee: Individual
•
Filing: 1970-11-03
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Granted: 1973-07-17
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Expires: 1990-11-03
Abstract
Abstract METHOD AND APPARATUS FOR MAKING ARTICLES, SUCH AS BUILDING COMPONENTS, BY TAMPING A LAYER OF FIBROUS MATERIAL INTO A LAYER OF LIQUID PLASTIC MATERIAL. THE TAMPING IS PERFORMED BY DIRECTING BLOWS ON THE LAYERS IN ADJACENT AREAS ARRANGED LIKE A GRID, WHILST THE LAYERS ARE MOVED RELATIVE TO THE AREAS. THE AMPLITUDE OF THE BLOWS WITHIN THE INDIVIDUUAL AREAS DECREASES FROM A REGION OF MAXIMUM AMPLITUDE TOWARDS THE PLACE WHERE THE LAYERS LEAVE THE AREA.
Inventors
- 👤 F Reinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:30
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/585; B29C53/586; B29C37/00; B29C37/006; B29C37/0064; B29C43/00; B29C43/32; B29C43/56; B29C53/02; B29C53/04; B29C53/36; B29C53/38; B29C53/382; B29C53/40; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/347; B29C70/40; B29C70/42; B29C2791/00; B29C2791/004; B29C2791/008; B29K; B29K2067/00; B29K2067/06; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2009/00; B29L2023/00; B29L2023/18; B29L2023/22
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |