US3089336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass flow meter
Assignee: Schneider Electric Systems USA Inc
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Filing: 1959-06-03
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Granted: 1963-05-14
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Expires: 1979-06-03
Abstract
No abstract record available.
Inventors
- 👤 Charles C Waugh
- 👤 Kenneth R Jackson
- 👤 Spencer D Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
APPARATUS FOR MEASURING THE MASS RATE OF FLUID FLOW THROUGH A PASSAGE COMPRISING TURBINE ROTOR MEANS COAXIALLY LOCATED WITHIN SAID PASSAGE, A PLURALITY OF VANES SECURED TO SAID ROTOR MEANS AND EXTENDING LONGITUDINALLY OF SAID PASSAGE, MEANS FOR IMPARTING TO SAID ROTOR MEANS AND SAID VANES A SUBSTANTIALLY CONSTANT ROTATIONAL TORQUE CASING ROTATION OF SAID VANES AND THEREBY IMPARTING TO THE FLUID FLOWING PAST SAID VANES A SUBSTANTIALLY CONSTANT TORQUE, AND MEANS FOR MEASURING THE SPEED OF ROTATION OF SAID ROTOR MEANS TO OBTAIN A QUANTITY WHICH IS INVERSELY PROPORTIONAL TO FLUID MASS FLOW RATE IN SAID PASSAGE.
Claim 2
Dependent Claim
98 words
APPARATUS FOR MEASURING THE MASS RATE OF FLUID FLOW THROUGH A PASSAGE COMPRISING TURBINE ROTOR MEANS COAXIALLY LOCATED WITHIN SAID PASSAGE, A PLURALITY OF VANES SECURED TO SAID ROTOR MEANS AND EXTENDING LONGITUDINALLY OF SAID PASSAGE, MEANS FOR IMPARTING TO SAID ROTOR MEANS AND SAID VANES A SUBSTANTIALLY CONSTANT ROTATIONAL TORQUE CASING ROTATION OF SAID VANES AND THEREBY IMPARTING TO THE FLUID FLOWING PAST SAID VANES A SUBSTANTIALLY CONSTANT TORQUE, AND MEANS FOR MEASURING THE SPEED OF ROTATION OF SAID ROTOR MEANS TO OBTAIN A QUANTITY WHICH IS INVERSELY PROPORTIONAL TO FLUID MASS FLOW RATE IN SAID PASSAGE.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |