US3348181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadband rotary transformer
Assignee: Lockheed Martin Corp
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Filing: 1965-04-26
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Granted: 1967-10-17
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Stromswold Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/18; H01F19/00; H01F19/04; H01F19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A ROTARY TRANSFORMER COMPRISING (A) A SUBSTANTIALLY CIRCULAR SINGLE TURN PRIMARY CONDUCTOR HAVING (1) A TUBULAR CROSS-SECTION, AND (2) A LONGITUDINAL SLOT, (B) A SUBSTANTIALLY CIRCULAR SINGLE TURN SECONDARY CONDUCTOR (1) DISPOSED WITHIN SAID PRIMARY CONDUCTOR, AND (2) EXTENDING LONGITUDINAL THEREIN, (C) MEANS FOR MOUNTING SAID PRIMARY AND SECONDARY CONDUCTORS FOR CONTINUOUS RELATIVE ROTATION ABOUT THE AXIS OF THE CIRCLE DEFINED BY SAID PRIMARY CONDUCTOR.
Claim 2
Dependent Claim
65 words
A ROTARY TRANSFORMER COMPRISING (A) A SUBSTANTIALLY CIRCULAR SINGLE TURN PRIMARY CONDUCTOR HAVING (1) A TUBULAR CROSS-SECTION, AND (2) A LONGITUDINAL SLOT, (B) A SUBSTANTIALLY CIRCULAR SINGLE TURN SECONDARY CONDUCTOR (1) DISPOSED WITHIN SAID PRIMARY CONDUCTOR, AND (2) EXTENDING LONGITUDINAL THEREIN, (C) MEANS FOR MOUNTING SAID PRIMARY AND SECONDARY CONDUCTORS FOR CONTINUOUS RELATIVE ROTATION ABOUT THE AXIS OF THE CIRCLE DEFINED BY SAID PRIMARY CONDUCTOR.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |