US3201987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass flow meter
Assignee: Individual
•
Filing: 1962-10-01
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Granted: 1965-08-24
•
Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Ackerman Arthur Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:58
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METER FOR MEASURING THE MASS FLOW RATE OF A FLUID FLOWING IN A CONDUIT COMPRISING: A FIRST FREE RUNNING TURBINE ROTATABLE MOUNTED IN SAID CONDUIT; A SECOND TURBINE ROTATABLE MOUNTED IN SAID CONDUIT AT A LOCATION SPACED FROM SAID FIRST TURBINE AND COMPRISING A PLURALITY OF BALDES EACH HAVING A PORTION OF MAGNETIC MATERIAL; MEANS FOR COUPLING A LOAD TO SAID SECOND TURBINE WHICH IS A KNOWN FUNCTION OF THE ROTATIVE SPEED OF SAID SECOND TURBINE; SAID LOAD COMPRISING A VARIABLE RELUCTANCE GENERATOR LOCATED TO BE RESPONSIVE TO SAID MAGNETIC BLADE PORTIONS AS THE BLADES MOVE PAST SAID GENERATOR; MEANS FOR MEASURING THE SPEED OF EACH OF SAID TURBINES; AND MEANS RESPONSIVE TO SAID MEASURING MEANS FOR OBTAININ THE RATION OF SAID SPEEDS FROM WHICH THE MASS FLOW RATE OF SAIF FLUID CAN BE DERIVED.
Claim 2
Dependent Claim
136 words
A METER FOR MEASURING THE MASS FLOW RATE OF A FLUID FLOWING IN A CONDUIT COMPRISING: A FIRST FREE RUNNING TURBINE ROTATABLE MOUNTED IN SAID CONDUIT; A SECOND TURBINE ROTATABLE MOUNTED IN SAID CONDUIT AT A LOCATION SPACED FROM SAID FIRST TURBINE AND COMPRISING A PLURALITY OF BALDES EACH HAVING A PORTION OF MAGNETIC MATERIAL; MEANS FOR COUPLING A LOAD TO SAID SECOND TURBINE WHICH IS A KNOWN FUNCTION OF THE ROTATIVE SPEED OF SAID SECOND TURBINE; SAID LOAD COMPRISING A VARIABLE RELUCTANCE GENERATOR LOCATED TO BE RESPONSIVE TO SAID MAGNETIC BLADE PORTIONS AS THE BLADES MOVE PAST SAID GENERATOR; MEANS FOR MEASURING THE SPEED OF EACH OF SAID TURBINES; AND MEANS RESPONSIVE TO SAID MEASURING MEANS FOR OBTAININ THE RATION OF SAID SPEEDS FROM WHICH THE MASS FLOW RATE OF SAIF FLUID CAN BE DERIVED.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |