Patent US3090934A successfully refreshed from Google Patents.
US3090934A
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Reduction of unwanted coupling between transformer members of position-measuring transformers
Assignee: Inductosyn Corp
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Filing: 1957-12-26
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Granted: 1963-05-21
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Clair L Farrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:39
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/12; G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/204; G01D5/2073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A POSITION-MEASURING TRANSFORMER HAVING RELATIVELY MOVABLE INPUT AND OUTPUT INDUCTIVELY RELATED WINDINGS, EACH WINDING BEING DISTRIBUTED OVER AN AREA, ONE OF SAID WINDINGS OVERLYING THE OTHER THROUGHOUT A CERTAIN AREA, SAID INPUT AND OUTPUT WINDINGS HAVING A CLOSE SPACING ESTABLISHING A SUBSTANTIAL MAGNETIC COUPLING BETWEEN THEM AND WHEREBY THE POTENTIAL DISTRIBUTION OF THE WINDINGS ACT TO ELECTROSTATICALLY COUPLE THE WINDINGS TOGETHER, AN ELECTROSTATIC SHIELD COMPRISING AN IMPERFORATE METALLIC SHEET OF NON-MAGNETIC ELECTRICALLY CONDUCTING MATERIAL, SAID SHEET EXTENDING THROUGHOUT THE AREA BETWEEN THE WINDINGS, AND A BOND OF INSULATING MATERIAL BETWEEN SAID SHEET AND ONE OF SAID WINDINGS.
Claim 2
Dependent Claim
97 words
A POSITION-MEASURING TRANSFORMER HAVING RELATIVELY MOVABLE INPUT AND OUTPUT INDUCTIVELY RELATED WINDINGS, EACH WINDING BEING DISTRIBUTED OVER AN AREA, ONE OF SAID WINDINGS OVERLYING THE OTHER THROUGHOUT A CERTAIN AREA, SAID INPUT AND OUTPUT WINDINGS HAVING A CLOSE SPACING ESTABLISHING A SUBSTANTIAL MAGNETIC COUPLING BETWEEN THEM AND WHEREBY THE POTENTIAL DISTRIBUTION OF THE WINDINGS ACT TO ELECTROSTATICALLY COUPLE THE WINDINGS TOGETHER, AN ELECTROSTATIC SHIELD COMPRISING AN IMPERFORATE METALLIC SHEET OF NON-MAGNETIC ELECTRICALLY CONDUCTING MATERIAL, SAID SHEET EXTENDING THROUGHOUT THE AREA BETWEEN THE WINDINGS, AND A BOND OF INSULATING MATERIAL BETWEEN SAID SHEET AND ONE OF SAID WINDINGS.
References Cited (Backward Citations)
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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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |