US3555900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow meter
Assignee: General Electric Co
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Filing: 1968-12-05
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Granted: 1971-01-19
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Expires: 1988-12-05
Abstract
Abstract A MASS FLOWMETER SYSTEM OF THE ANGULAR MOMENTUM TYPE COMPRISING SWIRL GENERATING MEANS, A SPEED TURBINE AND A REACTION TURBINE RESTRAINED BY AN ELECTROMAGNETIC TORQUE MOTOR. THE REACTION TURBINE IS MAINTAINED IN A BALANCED CONDITION BY A CONTROL LOOP INTO WHICH TURBINE SPEED AND POSITION SIGNALS ARE INTRODUCED TO CONTROL THE TORQUE MOTOR CURRENT AND TORQUE. IN THIS MANNER AUTOMATIC COMPENSATION FOR CHANGES IN SWIRL VELOCITY IS OBTAINED PERMITTING DIRECT MEASUREMENT OF MASS FLOW RATE WITHOUT NEED FOR MAINTAINING CONSTANT SWIRL VELOCITY. BOTH ANALOG AND DIGITAL CONTROL AND INDICATING SYSTEMS ARE DISCLOSED.
Inventors
- 👤 Douglas M Bauer
- 👤 Clement F Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80; G01F1/05; G01F1/10; G01F1/115
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |