US3379591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament winding of tubular articles with incorporation of cut lengths of roving during winding
Assignee: Individual
•
Filing: 1963-12-18
•
Granted: 1968-04-23
•
Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Richard C Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/80; B29C53/82; B29C53/821; B29C53/824; B29C53/8008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
230 words
THE METHOD OF FORMING A MATTER CARRYING PIPE UPON A ROTATABLE MANDREL WHICH INCLUDES THE STEPS OF ROTATING THE MANDREL, DEPOSITING A LAYER OF MATERIAL ON THE MANDREL WHICH IS SUBSTANTIALLY IMPERVIOUS TO, WEAR-RESISTANT TO, NON-ERODABLE BY, AND INSOLUBLE BY THE MATTER TO BE CARRIED BY THE PIPE AND IS CAPABLE OF BIENG DEPOSITED ON THE MANDREL IN AN UNSOLIDIFIED TACKY STATE; CONTEMPORANEOUSLY WINDING CONTINUOUS STRAND MEANS ABOUT THE MANDREL IN A GENERALLY HELICAL MANNER, DIRECTING AND DEPOSITING ON THE ROTATING MANDREL A SPRAY OF A PROMOTED AND CATALYZED SYNTHETIC RESIN IN AN UNSOLIDIFIED PLASTIC STATE SO AS TO BOND ITSELF TO THE LAYER OF MATERIAL PREVIOUSLY DEPOSITED AND THE LAYER OF MATERIAL PREVIOUSLY DEPOSITED WILL BOND ITSELF TO SUCH SYNTETIC RESIN, THE SPRAY BEING DIRECTED OVER THE STRAND MEANS FOR WETTING THE SAME WITH THE SPRAY PRIOR TO THE WINDING OF THE STRAND MEANS ABOUT THE MANDREL, AND FEEDING CUT LENGTHS OF ROVING INTO THE SPRAY IN A MANNER TO WET THE CUT LENGTHS OF ROVING WITH THE SPRAY AND TO SPRAY DEPOSIT THE WETTED CUT LENGTHS OF ROVING IN A JACKSTRAW FASHION UPON THE MANDREL IN AN INTERMINGLED RELATIONSHIP WITH THE WETTED STRAND MEANS; COMPACTING AND ARRANGING THE SUBSTANCES APPLIED TO THE MANDREL IN A CYLINDRICAL FORM ABOUT THE MANDREL; PERMITTING THE UNSOLIFIFIED SUBSTANCES ON THE MANDREL TO HARDEN; AND REMOVING THE THUS FORMED ARTICLE FROM THE MANDREL.
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |