Patent US3179875A successfully refreshed from Google Patents.
US3179875A
Expired / Lapsed
US
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Precision ratio transformer
Assignee: Applied Biosystems Inc
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Filing: 1961-09-07
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Granted: 1965-04-20
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Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 George H Keats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PRECISION RATIO TRANSFORMER WHICH COMPRISES A SERIES OF SETS OF WINDINGS, EACH OF SAID SETS COMPRISING A PRIMARY WINDING AND A SECONDARY WINDING, SAID PRIMARY AND SECONDARY WINDINGS OF EACH SET BEING MAGNETICALLY FLUX-LINED; MEANS FOR APPLYING AN INPUT VOLTAGE TO THE PRIMARY WINDING OF A FIRST SET; A PLURALITY OF TAP MEANS SPACED ALONG THE PRIMARY WINDING OF EACH SET; PICKOFF MEANS SELECTIVELY POSITIONABLE ALONG THE TAP MEANS OF EACH OF SAID PRIMARY WINDINGS; FIRST CONDUCTOR MEANS ELECTRICALLY CONNECTING EACH OF SAID PICKOFF MEANS WITH A FIRST PORTION OF ITS ASSOCIATED SECONDARY WINDING AND WITH A FIRST PORTION OF THE PRIMARY WINDING OF A NEXT SET ALONG THE SERIES; SECOND CONDUCTOR MEANS ELECTRICALLY CONNECTING A SECOND PORTION OF SAID ASSOCIATED SECONDARY WINDING WITH A SECOND PORTION OF THE PRIMARY WINDING OF SAID NEXT SET; AND OUTPUT MEANS CONNECTED BETWEEN THE PRIMARY WINDING OF SAID FIRST SET AND THE SECONDARY WINDING OF THE LAST SET.
Claim 2
Dependent Claim
156 words
A PRECISION RATIO TRANSFORMER WHICH COMPRISES A SERIES OF SETS OF WINDINGS, EACH OF SAID SETS COMPRISING A PRIMARY WINDING AND A SECONDARY WINDING, SAID PRIMARY AND SECONDARY WINDINGS OF EACH SET BEING MAGNETICALLY FLUX-LINED; MEANS FOR APPLYING AN INPUT VOLTAGE TO THE PRIMARY WINDING OF A FIRST SET; A PLURALITY OF TAP MEANS SPACED ALONG THE PRIMARY WINDING OF EACH SET; PICKOFF MEANS SELECTIVELY POSITIONABLE ALONG THE TAP MEANS OF EACH OF SAID PRIMARY WINDINGS; FIRST CONDUCTOR MEANS ELECTRICALLY CONNECTING EACH OF SAID PICKOFF MEANS WITH A FIRST PORTION OF ITS ASSOCIATED SECONDARY WINDING AND WITH A FIRST PORTION OF THE PRIMARY WINDING OF A NEXT SET ALONG THE SERIES; SECOND CONDUCTOR MEANS ELECTRICALLY CONNECTING A SECOND PORTION OF SAID ASSOCIATED SECONDARY WINDING WITH A SECOND PORTION OF THE PRIMARY WINDING OF SAID NEXT SET; AND OUTPUT MEANS CONNECTED BETWEEN THE PRIMARY WINDING OF SAID FIRST SET AND THE SECONDARY WINDING OF THE LAST SET.
References Cited (Backward Citations)
US2572545A
Cited
US2832036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |