US3352154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated element fluid flow sensor
Assignee: Individual
•
Filing: 1965-06-16
•
Granted: 1967-11-14
•
Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert S Djorup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:08
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/10; G01P5/12; G01P13/00; G01P13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A FLUID SENSOR COMPRISING: INSULATIVE REFRACTORY MEANS PROVIDING THREE GEOMETRIC SURFACES OF REVOLUTION, THE AXIS OF EACH GEOMETRIC SURFACE OF REVOLUTION BEING ORTHOGONAL TO THE AXES OF THE OTHER GEOMETRIC SURFACES OR REVOLUTION; EACH SURFACE OF REVOLUTION HAVING AN ADHERENT ELECTRICALLY CONDUCTIVE RING CENTERED ABOUT THE AXIS OF REVOLUTION, EACH CONDUCTIVE RING EXHIBITING A CHANGE IN ELECTRICAL RESISTIVITY AS A FUNCTION OF TEMPERATURE; AND MEANS PROVIDING ELECTRICAL CONNECTIONS TO EACH RING WHEREBY AN ELECTRICAL CURRENT CAN BE CAUSED TO FLOW IN EACH RING.
References Cited (Backward Citations)
US2870305A
Cited
US3138025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |