Patent US5368560A successfully refreshed from Google Patents.
Patent US3783069A successfully refreshed from Google Patents.
US3783069A
Expired / Lapsed
US
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Method and apparatus for producing fibrous tubular articles
Assignee: Johns Manville Corp
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Filing: 1972-03-03
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Granted: 1974-01-01
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Expires: 1992-03-03
Abstract
Abstract METHOD AND APPARATUS FOR PRODUCING TUBULAR ARTICLES FORMED OF FIBROUS MATERIAL WHEREIN A MOVING MAT OF FIBROUS MATERIAL IS WRAPPED ABOUT A MANDREL ROTATING ABOUT AN AXIS MOVING ALONG THE PATH OF THE MAT. THE MAT IS THEN WRAPPED AROUND THE MANDREL UNTIL A DESIRED QUANTITY OF FIBROUS MATERIAL IS ACHEIVED. THEREAFTER, THE MAT AND MANDREL ARE CONVEYED TO A SIZING STATION WHERE THE OUTER DIAMETER AND CONFIGURATION OF THE TUBULAR ARTICLE ARE FINALLY SET.
Inventors
- 👤 R Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:10
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/562
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |