Patent US3108516A successfully refreshed from Google Patents.
US3108516A
Expired / Lapsed
US
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Spiral winding machine
Assignee: Primerica Inc
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Filing: 1960-12-28
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Granted: 1963-10-29
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Elam William Binford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
B; B31; B31C; B31C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A SPIRAL WINDING MACHINE COMPRISING A WINDING MANDREL AND MEANS FOR WRAPPING AT LEAST ONE PLY OF WEB MATERIAL HELICALLY AROUND SAID MANDREL AT A PREDETERMINED HELIX ANGLE TO FORM IT INTO A TUBE AND FOR ADVANCING SAID TUBE AXIALLY ALONG SAID MANDREL, SAID MANDREL BEING FORMED WITH A CORE AND A REPLACEABLE EXTERIOR LAYER WHICH COMPRISES A TAPE WRAPPED HELICALLY AROUND SAID MANDREL SUBSTANTIALLY THROUGHOUT ITS OPERATIVE LENGTH AND ANCHORED AGAINST AXIAL MOVEMENT RELATIVE THERETO, SAID TAPE HAVING AN OUTER SURFACE PROVIDING LESS FRICTIONAL RESISTANCE TO THE MOVEMENT OF SAID TUBE THEREALONG THAN THAT OF THE OUTER SURFACE OF SAID MANDREL CORE.
Claim 2
Dependent Claim
103 words
A SPIRAL WINDING MACHINE COMPRISING A WINDING MANDREL AND MEANS FOR WRAPPING AT LEAST ONE PLY OF WEB MATERIAL HELICALLY AROUND SAID MANDREL AT A PREDETERMINED HELIX ANGLE TO FORM IT INTO A TUBE AND FOR ADVANCING SAID TUBE AXIALLY ALONG SAID MANDREL, SAID MANDREL BEING FORMED WITH A CORE AND A REPLACEABLE EXTERIOR LAYER WHICH COMPRISES A TAPE WRAPPED HELICALLY AROUND SAID MANDREL SUBSTANTIALLY THROUGHOUT ITS OPERATIVE LENGTH AND ANCHORED AGAINST AXIAL MOVEMENT RELATIVE THERETO, SAID TAPE HAVING AN OUTER SURFACE PROVIDING LESS FRICTIONAL RESISTANCE TO THE MOVEMENT OF SAID TUBE THEREALONG THAN THAT OF THE OUTER SURFACE OF SAID MANDREL CORE.
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |