US2739766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for uncoiling paramagnetic filamentary material
Assignee: AT&T Inc
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Filing: 1952-03-01
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Granted: 1956-03-27
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Expires: 1972-03-01
Abstract
No abstract record available.
Inventors
- 👤 Vincent A Rayburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:37
CPC Classifications
B; B65; B65H; B65H49/00; B65H49/02; B21; B21C; B21C47/00; B21C47/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
APPARATUS FOR UNCOILING COILS OF PARAMAGNETIC FILAMENTARY MATERIAL, WHICH COMPRISES A RETAINER FOR SUPPORTING A COIL OF SUCH MATERIAL, AND MAGNETIC MEANS FOR PRODUCING A MAGNETIC FLUX WITHIN THE MATERIAL WHEREBY THE INDIVIDUAL CONVOLUTIONS OF THE COIL ARE COMPACTED TIGHTLY TOGETHER AND AGAINST THE SIDES OF THE RETAINER BY THE RESULTING MAGNETIC COERCIVE FORCES, SAID FORCES TENDING TO RESTRAIN THE UNCOILING OF THE CONVOLUTIONS OF THE COIL TERSECTING SAID BORE, WEDGES SLIDABLE IN SAID SLOTS ADAPTED TO ENGAGE SAID SEGMENTS ON THE INTERIOR THEREOF, AND EX-
Claim 2
Dependent Claim
86 words
APPARATUS FOR UNCOILING COILS OF PARAMAGNETIC FILAMENTARY MATERIAL, WHICH COMPRISES A RETAINER FOR SUPPORTING A COIL OF SUCH MATERIAL, AND MAGNETIC MEANS FOR PRODUCING A MAGNETIC FLUX WITHIN THE MATERIAL WHEREBY THE INDIVIDUAL CONVOLUTIONS OF THE COIL ARE COMPACTED TIGHTLY TOGETHER AND AGAINST THE SIDES OF THE RETAINER BY THE RESULTING MAGNETIC COERCIVE FORCES, SAID FORCES TENDING TO RESTRAIN THE UNCOILING OF THE CONVOLUTIONS OF THE COIL TERSECTING SAID BORE, WEDGES SLIDABLE IN SAID SLOTS ADAPTED TO ENGAGE SAID SEGMENTS ON THE INTERIOR THEREOF, AND EX-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |