Patent US3344666A successfully refreshed from Google Patents.
US3344666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass flowmeters
Assignee: Allard Way Holdings Ltd
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Filing: 1964-12-07
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Granted: 1967-10-03
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 John W Rilett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:55
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80; G01F1/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A MASS FLOWMETER COMPRSING A FLUID FLOW TUBE, A FLUID TURBINE AND AN IMPELLER MEMBER, MEANS MOUNTING SAID FLUID TURBINE AND SAID IMPELLER MEMBER IN SAID FLOW TUBE FOR ROTATION ABOUT A COMMON AXIS DISPOSED LONGITUDINALLY TO SAID TUBE, SAID FLUID TURBINE INCLUDING A ROTOR HAVING TURBINE BLADES DISPOSED AT AN ANGLE TO THE DIRECTION OF FLUID FLOWING THROUGH SAID TUBE, SAID IMPELLER MEMBER INCLUDING A ROTOR HAVING RADIAL VANES SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID ROTOR, RESILIENT COUPLING MEANS INTERCONNECTING THE TURBINE ROTOR WITH SAID IMPELLER ROTOR FOR DRIVING THE IMPELLER ROTOR DUE TO TURBINE ROTOR TO IMPART TO SAID FLUID A SWIRL HAVING AN ANGULAR VELOCITY SUBSTANTIALLY EQUAL TO THE ANGULAR VELOCITY OF SAID IMPELLER ROTOR WHEREBY THE IMPELLER ROTOR DUE TO THE RESILIENCY OF SAID COUPLING MEANS LAGS BEHIND THE TURBINE ROTOR BY AN ANGLE WHICH IS A FUNCTION OF THE MASS FLOW RATE OF FLUID WITHIN THE TUBE, AND MEANS FOR MEASURING THE ANGLE OF LAG.
Claim 2
Dependent Claim
163 words
A MASS FLOWMETER COMPRSING A FLUID FLOW TUBE, A FLUID TURBINE AND AN IMPELLER MEMBER, MEANS MOUNTING SAID FLUID TURBINE AND SAID IMPELLER MEMBER IN SAID FLOW TUBE FOR ROTATION ABOUT A COMMON AXIS DISPOSED LONGITUDINALLY TO SAID TUBE, SAID FLUID TURBINE INCLUDING A ROTOR HAVING TURBINE BLADES DISPOSED AT AN ANGLE TO THE DIRECTION OF FLUID FLOWING THROUGH SAID TUBE, SAID IMPELLER MEMBER INCLUDING A ROTOR HAVING RADIAL VANES SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID ROTOR, RESILIENT COUPLING MEANS INTERCONNECTING THE TURBINE ROTOR WITH SAID IMPELLER ROTOR FOR DRIVING THE IMPELLER ROTOR DUE TO TURBINE ROTOR TO IMPART TO SAID FLUID A SWIRL HAVING AN ANGULAR VELOCITY SUBSTANTIALLY EQUAL TO THE ANGULAR VELOCITY OF SAID IMPELLER ROTOR WHEREBY THE IMPELLER ROTOR DUE TO THE RESILIENCY OF SAID COUPLING MEANS LAGS BEHIND THE TURBINE ROTOR BY AN ANGLE WHICH IS A FUNCTION OF THE MASS FLOW RATE OF FLUID WITHIN THE TUBE, AND MEANS FOR MEASURING THE ANGLE OF LAG.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |