US3193815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive particle indicator for electrically non-conductive fluids
Assignee: Motors Liquidation Co
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Filing: 1962-05-07
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Granted: 1965-07-06
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Val H Prestel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0656
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A DEVICE FOR INCICATING THE PRESENCE OF ELECTRICALLY CONDUCTIVE PARTICLES IN ANY ONE OF A PLURALITY OF CONTAINERS OF NONELECTRICALLY CONDUCTIVE FLUID AND OF DETERMINING WHETHER THE PARTICLES HAVE A PREDETERMINED CURRENTCARRYING CAPACITY, SAID DEVICE COMPRISING A D.C. SOURCE, A PARTICLE DETECTOR LOCATED RESPECTIVELY IN EACH OF SAID PLURALITY OF CONTAINERS AND INCLUDING TWO MAGNETIZED ELEMENTS OF ELECTRICALLY CONDUCTIVE MATERIAL SEPARATED BY INSULATING MEANS, A FIRST INDICATING LAMP, SWITCHING MEANS CONNECTED EACH OF SAID DETECTORS IN SERIES WITH SAID FIRST LAMP ACROSS SAID SOURCE WHEREBY SAID LAMP IS ENERGIZED WHEN AN ELECTRICALLY CONDUCTIVE PARTICLE BRIDGES SAID MEMBERS, A SECOND LOWER RESISTANCE INDICATING LAMP, SAID SWITCHING MEANS OPERABLE TO CONNECT SAID SECOND LAMP BETWEEN SAID SOURCE AND ANY ONE OF SAID DETECTORS TO APPLY SAID PREDETERMINED CURRENT THERETO WHILE SIMULTANEOUSLY DISCONNECTING SAID FIRST LAMP FROM SAID ONE OF SAID DETECTORS TO THEREBY INDICATE THE EXISTANCE OF A PARTICLE OF GREATER THAN SAID PREDETERMINED CURRENT-CARRYING CAPACITY.
Claim 2
Independent Claim
154 words
A DEVICE FOR INCICATING THE PRESENCE OF ELECTRICALLY CONDUCTIVE PARTICLES IN ANY ONE OF A PLURALITY OF CONTAINERS OF NONELECTRICALLY CONDUCTIVE FLUID AND OF DETERMINING WHETHER THE PARTICLES HAVE A PREDETERMINED CURRENTCARRYING CAPACITY, SAID DEVICE COMPRISING A D.C. SOURCE, A PARTICLE DETECTOR LOCATED RESPECTIVELY IN EACH OF SAID PLURALITY OF CONTAINERS AND INCLUDING TWO MAGNETIZED ELEMENTS OF ELECTRICALLY CONDUCTIVE MATERIAL SEPARATED BY INSULATING MEANS, A FIRST INDICATING LAMP, SWITCHING MEANS CONNECTED EACH OF SAID DETECTORS IN SERIES WITH SAID FIRST LAMP ACROSS SAID SOURCE WHEREBY SAID LAMP IS ENERGIZED WHEN AN ELECTRICALLY CONDUCTIVE PARTICLE BRIDGES SAID MEMBERS, A SECOND LOWER RESISTANCE INDICATING LAMP, SAID SWITCHING MEANS OPERABLE TO CONNECT SAID SECOND LAMP BETWEEN SAID SOURCE AND ANY ONE OF SAID DETECTORS TO APPLY SAID PREDETERMINED CURRENT THERETO WHILE SIMULTANEOUSLY DISCONNECTING SAID FIRST LAMP FROM SAID ONE OF SAID DETECTORS TO THEREBY INDICATE THE EXISTANCE OF A PARTICLE OF GREATER THAN SAID PREDETERMINED CURRENT-CARRYING CAPACITY.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |