US3623835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas flowmeter
Assignee: Halliburton Co
•
Filing: 1969-06-11
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Granted: 1971-11-30
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Expires: 1989-06-11
Abstract
Abstract A MAGNETIC FLOWMETER OF THE TURBINE TYPE WHEREIN THE ROTOR BLADES ARE SUBSTANTIALLY DIAMAGNETIC EXCEPT FOR THE INCLUSION OF MAGNETIC SLUGS IN THE TIPS THEREOF. THE ROTOR IS MOUNTED WITHIN THE FLOWMETER HOUSING BY MEANS OF A COMBINATION JEWEL AND MAGNETIC BEARING AT EACH END OF THE ROTOR AXLE. THE BEARINGS ARE STATICALLY HELD WITHIN THE FLOWMETER BY CROSS-VANE ASSEMBLIES WHICH ENGAGE THE FLOWMETER HOUSING AND ARE HELD AGAINST ROTATION BY A PAIR OF DOWEL PINS. ONE OF THE BEARINGS MAY BE AXIALLY ADJUSTABLE WITH RESPECT TO THE CROSS-VANE ASSEMBLY AND ROTOR AXLE TO PROVIDE FOR OPTIMUM BEARING CLEARANCES.
Inventors
- 👤 Charles L Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:38
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/115; G01F1/11
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |