Patent US3040250A successfully refreshed from Google Patents.
US3040250A
Expired / Lapsed
US
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Method and apparatus for analyzing insulation oil
Assignee: Doble Engineering Co
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Filing: 1959-06-10
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Granted: 1962-06-19
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Fuchs George H Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:39
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF ANALYZING AN OIL WHICH GASSES UNDER ELECTRICAL STRESS CONDITIONS COMPRISING THE STEPS OF CONFINING A QUANTITY OF OIL TO BE TESTED AND A GAS VOLUME AT THE SURFACE OF SAID OIL, SUBJECTING SAID OIL AND GAS VOLUME TO CONSTANT TEMPERATURE CONDITIONS, BUBBLING A GAS SELECTED FROM THE GROUP COMPRISED OF HYDROGEN, ARGON, HELIUM AND NITROGEN THROUGH THE OIL AT A CONTROLLED RATE AND ALLOWING THE GAS TO SWEEP THROUGH SAID GAS VOLUME AND ESCAPE, THEREAFTER SEALING SAID GAS VOLUME FROM OUTSIDE COMMUNICATION, IMPOSING A HIGH VOLTAGE UPON THE GAS PHASE IN SAID VOLUME AND THE OIL ADJACENT THE GAS-LIQUID INTERFACE FOR A PERIOD AND THERAFTER QUANTITATIVELY MEASURING THE INCREASE IN THE AMOUNT OF GAS IN SAID VOLUME THEREBY DETERMINING THE POSITIVE GASSING RATE OF THE OIL.
Claim 2
Independent Claim
129 words
A METHOD OF ANALYZING AN OIL WHICH GASSES UNDER ELECTRICAL STRESS CONDITIONS COMPRISING THE STEPS OF CONFINING A QUANTITY OF OIL TO BE TESTED AND A GAS VOLUME AT THE SURFACE OF SAID OIL, SUBJECTING SAID OIL AND GAS VOLUME TO CONSTANT TEMPERATURE CONDITIONS, BUBBLING A GAS SELECTED FROM THE GROUP COMPRISED OF HYDROGEN, ARGON, HELIUM AND NITROGEN THROUGH THE OIL AT A CONTROLLED RATE AND ALLOWING THE GAS TO SWEEP THROUGH SAID GAS VOLUME AND ESCAPE, THEREAFTER SEALING SAID GAS VOLUME FROM OUTSIDE COMMUNICATION, IMPOSING A HIGH VOLTAGE UPON THE GAS PHASE IN SAID VOLUME AND THE OIL ADJACENT THE GAS-LIQUID INTERFACE FOR A PERIOD AND THERAFTER QUANTITATIVELY MEASURING THE INCREASE IN THE AMOUNT OF GAS IN SAID VOLUME THEREBY DETERMINING THE POSITIVE GASSING RATE OF THE OIL.
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |