US3605497A
Expired / Lapsed
US
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Flowmeter bearing friction compensating method and system
Assignee: Halliburton Co
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Filing: 1970-08-04
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Granted: 1971-09-20
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Expires: 1990-08-04
Abstract
Abstract A FLOWMETER BEARING FRICTION COMPENSATING METHOD AND CIRCUIT FOR USE IN A FLUID FLOW METERING SYSTEM USING DIGITAL SIGNALS AND LOGIC FOR PRODUCING A COMPENSATED MANINFESTATION OF FLUID FLOW. MEANS ARE PROVIDED TO PREVENT THE GENERATION OF COMPENSATING PULSES IN THE ABSENCE OF FLUID FLOW.
Inventors
- 👤 Carl W Zimmerman
- 👤 George V Copland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/02; G01F15/022; G01F15/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |