US3229522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal flowmeter
Assignee: TDY Industries LLC
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Filing: 1965-02-16
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Granted: 1966-01-18
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 James M Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/68; G01F1/684; G01F1/688; G01F1/6888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A FLUID FLOWMETER, A FIRST SECTION OF ELECTRICALLY AND THERMALLY CONDUCTIVE CONDUIT FOR FLOW OF FLUID THERETHROUGH HAVING FIRST AND SECOND ENDS EACH THERMALLY COUPLED TO A HEAT SINK, MEANS ELECTRIACALLY CONNECTING THE FIRST CONDUIT NEAR ITS ENDS TO FORM A FIRST ELECTRICAL LOOP WITH THE CONDUIT, A SECOND SECTION OF ELECTRICALLY AND THERMALLY CONDUCTIVE CONDUIT FOR FLOW OF FLUID THERETHROUGH HAVING FIRST AND SECOND ENDS EACH THERMALLY COUPLED TO A HEAT SINK, MEANS ELECTRICALLY CONNECTING THE SECOND CONDUIT NEAR ITS ENDS TO FORM A SECOND ELECTRICAL LOOP WITH SAID SECOND CONDUIT, A MAGNETIZABLE CORE MEMBER LINKING THROUGH BOTH OF SAID LOOPS, MEANS FOR DRIVING SAID CORE AS A TRANSFORMER CORE FOR GENERATING CIRCULATING HEATING CURRENTS IN THE TWO CONDUIT LOOPS, MEANS FOR PASSING FLUID THROUGH THE CONDUIT SECTIONS, AND A THERMOCOUPLE CIRCUIT HAVING AT LEAST TWO THERMOCOUPLE JUNCTIONS IN EACH CONDUIT SECTION, SAID JUNCTIONS BEING ELECTRICALLY CONNECTED IN SERIES RELATIONSHIP.
Claim 2
Dependent Claim
152 words
IN A FLUID FLOWMETER, A FIRST SECTION OF ELECTRICALLY AND THERMALLY CONDUCTIVE CONDUIT FOR FLOW OF FLUID THERETHROUGH HAVING FIRST AND SECOND ENDS EACH THERMALLY COUPLED TO A HEAT SINK, MEANS ELECTRIACALLY CONNECTING THE FIRST CONDUIT NEAR ITS ENDS TO FORM A FIRST ELECTRICAL LOOP WITH THE CONDUIT, A SECOND SECTION OF ELECTRICALLY AND THERMALLY CONDUCTIVE CONDUIT FOR FLOW OF FLUID THERETHROUGH HAVING FIRST AND SECOND ENDS EACH THERMALLY COUPLED TO A HEAT SINK, MEANS ELECTRICALLY CONNECTING THE SECOND CONDUIT NEAR ITS ENDS TO FORM A SECOND ELECTRICAL LOOP WITH SAID SECOND CONDUIT, A MAGNETIZABLE CORE MEMBER LINKING THROUGH BOTH OF SAID LOOPS, MEANS FOR DRIVING SAID CORE AS A TRANSFORMER CORE FOR GENERATING CIRCULATING HEATING CURRENTS IN THE TWO CONDUIT LOOPS, MEANS FOR PASSING FLUID THROUGH THE CONDUIT SECTIONS, AND A THERMOCOUPLE CIRCUIT HAVING AT LEAST TWO THERMOCOUPLE JUNCTIONS IN EACH CONDUIT SECTION, SAID JUNCTIONS BEING ELECTRICALLY CONNECTED IN SERIES RELATIONSHIP.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |