US3722279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring fluid flow
Assignee: Allard Way Holdings Ltd
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Filing: 1970-05-11
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Granted: 1973-03-27
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Expires: 1990-05-11
Abstract
Abstract IN APPARATUS FOR MEASURING THE MASS RATE OF FLOW OF A FLUID IMPARTING AN ANGULAR COMPONENT OF VELOCITY TO THE FLUID AND MEASURING THE FLOW RATE IN ARBITRARY TIME UNITS, THE ANGULAR VELOCITY IS IMPARTED TO THE FLUID BY AN IMPELLER. IN THIS INVENTION THE IMPELLER IS DRIVEN BY A TURBINE WHICH IS DRIVEN BY THE FLUID THE RATE OF FLOW OF WHICH IS TO BE MEASURED. VALVES ARE ALSO PROVIDED SO THAT SOME OF THE FLUID WILL AUTOMATICALLY BYPASS THE TURBINE IF THE RATE OF FLUID FLOW RISES ABOVE A PREDETERMINED VALUE. THIS ARRANGEMENT ENABLES THE TURBINE SPEED TO BE MAINTAINED SUBSTANTIALLY CONSTANT OVER A VERY WIDE RANGE OF RATES OF FLUID FLOW.
Inventors
- 👤 J Jablonski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:34
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80; G01F1/82
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |