Patent US3127579A successfully refreshed from Google Patents.
US3127579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary joint using circumferentially uniform field to couple rotor to stator
Assignee: AT&T Inc
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Filing: 1962-08-07
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Granted: 1964-03-31
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Expires: 1982-08-07
Abstract
No abstract record available.
Inventors
- 👤 Phillip H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/06; H01P1/062; H01P1/066; H01P1/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A ROTARY JOINT COMPRISING A RING-SHAPED STATOR AND A RING-SHAPED ROTOR COAXIALLY AND ADJACENTLY POSITIONED, HAVING OPPOSED PLANAR FACES OF THE SAME SIZE, AND EACH COMPRISING A SERIES OF LIKE HORNS WITH KEYSTONE-SHAPED MOUTHS TERMINATING IN AND SUBSTANTIALLY FILLING THE OP-
Claim 2
Dependent Claim
41 words
A ROTARY JOINT COMPRISING A RING-SHAPED STATOR AND A RING-SHAPED ROTOR COAXIALLY AND ADJACENTLY POSITIONED, HAVING OPPOSED PLANAR FACES OF THE SAME SIZE, AND EACH COMPRISING A SERIES OF LIKE HORNS WITH KEYSTONE-SHAPED MOUTHS TERMINATING IN AND SUBSTANTIALLY FILLING THE OP-
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |