US2743432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer water detector
Assignee: Wyeth Holdings LLC
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Filing: 1952-12-04
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Granted: 1956-04-24
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Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Kerr Thomas Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
APPARATUS FOR DETECTING THE PRESENCE OF UNDISSOLVED WATER IN AN OIL-FILLED TRANSFORMER HAVING A CASING WHICH COMPRISES IN COMBINATION WITH SAID CASING: AN ELECTRICALLY CONDUCTIVE CHAMBER INTEGRALLY CONNECTED TO THE INTERIOR OF SAID OIL-FILLED TRANSFORMER CASING BY MEANS OF AT LEAST ONE PIPE HAVING A VALVE POSITIONED IN SAID PIPE, SAID CONDUCTIVE CHAMBER BEING ADJACENT TO AND LOCATED AT THE BOTTOM OF SAID OIL-FILLED TRANSFORMER CASING; AN ELECTRICAL GROUND CONNECTED TO SAID CASING; AN INSULATED ELECTRODE EXTENDING TO ABOUT 1/8 INCH FROM THE BOTTOM OF SAID CONDUCTIVE CHAMBER: A CIRCUIT CONSISTING OF A SOURCE OF 110 VOLT ALTERNATING CURRENT AND AT LEAST ONE ALARM DEVICE ONE LEG OF SAID CIRCUIT BEING CONNECTED TO SAID ELECTRODE, THE OTHER LEG OF SAID CIRCUIT BEING CONNECTED TO SAID ELECTRICAL GROUND, WHEREBY SAID ALARM DEVICE IS ACTIVATED WHEN WATER DISPLACES OIL IN THE BOTTOM OF SAID CHAMBER WHEN SAID TRANSFORMER IS AT REST.
Claim 2
Dependent Claim
149 words
APPARATUS FOR DETECTING THE PRESENCE OF UNDISSOLVED WATER IN AN OIL-FILLED TRANSFORMER HAVING A CASING WHICH COMPRISES IN COMBINATION WITH SAID CASING: AN ELECTRICALLY CONDUCTIVE CHAMBER INTEGRALLY CONNECTED TO THE INTERIOR OF SAID OIL-FILLED TRANSFORMER CASING BY MEANS OF AT LEAST ONE PIPE HAVING A VALVE POSITIONED IN SAID PIPE, SAID CONDUCTIVE CHAMBER BEING ADJACENT TO AND LOCATED AT THE BOTTOM OF SAID OIL-FILLED TRANSFORMER CASING; AN ELECTRICAL GROUND CONNECTED TO SAID CASING; AN INSULATED ELECTRODE EXTENDING TO ABOUT 1/8 INCH FROM THE BOTTOM OF SAID CONDUCTIVE CHAMBER: A CIRCUIT CONSISTING OF A SOURCE OF 110 VOLT ALTERNATING CURRENT AND AT LEAST ONE ALARM DEVICE ONE LEG OF SAID CIRCUIT BEING CONNECTED TO SAID ELECTRODE, THE OTHER LEG OF SAID CIRCUIT BEING CONNECTED TO SAID ELECTRICAL GROUND, WHEREBY SAID ALARM DEVICE IS ACTIVATED WHEN WATER DISPLACES OIL IN THE BOTTOM OF SAID CHAMBER WHEN SAID TRANSFORMER IS AT REST.
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) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |