US3608375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic flowmeter
Assignee: Individual
•
Filing: 1968-11-05
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Granted: 1971-09-28
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Expires: 1988-11-05
Abstract
Abstract A TUBULAR FLOW CONDUIT INCLUDES A PAIR OF DETECTING ELECTRODES ADJACENT THERETO, ONE OF SAID ELECTRODES BEING A HIGH IMPEDANCE ELECTRODE AND ANOTHER OF SAID ELECTRODES BEING A LOW IMPEDANCE ELECTRODE. AN ELECTROMAGNET MEANS IS PROVIDED OF UNIQUE CONSTRUCTION FOR PRODUCING AN ALTERNATING MAGNETIC FLUX WHICH IS OF SUBSTANTIALLY THE SAME PHASE THROUGHOUT A SUBSTANTIAL REGION OF THE FLOWMETER SO THAT THE CIRCUIT LOOPS WITHIN THE FLOWMETER AND INCLUDING THE HIGH IMPEDANCE ELECTRODE ARE THREADED BY SUBSTANTIALLY NO MAGNETIC FLUX WHICH IS COHERENT AND PHASE-SHIFTED RELATIVE TO THE MAGNETIC FLUX WHICH GENERATES THE FLOW SIGNAL IN FLUID FLOWING THROUGH THE TUBULAR MEANS.
Inventors
- 👤 Vincent J Cushing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:54
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/58; G01F1/588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |