Patent US3913029A successfully refreshed from Google Patents.
US3232105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass flowmeter
Assignee: FLOTRON Inc
•
Filing: 1963-07-22
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Granted: 1966-02-01
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Fishman Bernard
- 👤 Bloom Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:48
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/785
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A MASS FLOWMETER ADAPTED TO MEASURE THE MASS FLOW RATE OF AN EFFECTIVELY INCOMPRESSIBLE FLUID PASSING THERETHROUGH COMPRISING INLET AND OUTLET CONDUITS HAVING A FLOW WHICH IS TO BE MEASURED, FIRST AND SECOND BRANCH CONDUITS CONNECTING SAID INLET AND OUTLET CONDUITS, FIRST AND SECOND FLOW RESTRICTORS IN SAID FIRST BRANCH CONDUIT, THIRD AND A FOURTH FLOW RESTRICTORS IN SAID SECOND BRANCH CONDUIT, A CONSTANT VOLUMETRIC PUMP PUMPING A GIVEN CONSTANT VOLUMETRIC FLOW RATE INDEPENDENTLY OF CHANGES IN DENSITY OF SAID FLUID CONNECTING SAID FIRST AND SECND BRANCH CONDUITS AT POINTS BETWEEN THE FLOW RESTRICTORS THEREIN, SAID SLOW RESTRICTORS IN A PAIR HAVE THE PAIRS IN WHICH BOTH FLOW RESTRICTORS IN A PAIR HAVE THE SAME FLOW CHARACTERISTICS AND THE FLOW RESTRICTORS IN ONE PAIR HAVE DIFFERENT FLOW CHARACTERISTICS FROM THE FLOW RESTRICTORS IN THE OTHER PAIR, AND MEANS FOR MEASURING THE DIFFERENTIAL PRESSURE ACROSS THE TWO OF SAID FLOW RESTRICTORS WHERE THE DIFFERENTIAL PRESSURE VARIES LINEARLY WITH THE MASS FLOW RATE OF FLUID PASSING THROUGH SAID FLOWMETER.
Claim 2
Dependent Claim
167 words
A MASS FLOWMETER ADAPTED TO MEASURE THE MASS FLOW RATE OF AN EFFECTIVELY INCOMPRESSIBLE FLUID PASSING THERETHROUGH COMPRISING INLET AND OUTLET CONDUITS HAVING A FLOW WHICH IS TO BE MEASURED, FIRST AND SECOND BRANCH CONDUITS CONNECTING SAID INLET AND OUTLET CONDUITS, FIRST AND SECOND FLOW RESTRICTORS IN SAID FIRST BRANCH CONDUIT, THIRD AND A FOURTH FLOW RESTRICTORS IN SAID SECOND BRANCH CONDUIT, A CONSTANT VOLUMETRIC PUMP PUMPING A GIVEN CONSTANT VOLUMETRIC FLOW RATE INDEPENDENTLY OF CHANGES IN DENSITY OF SAID FLUID CONNECTING SAID FIRST AND SECND BRANCH CONDUITS AT POINTS BETWEEN THE FLOW RESTRICTORS THEREIN, SAID SLOW RESTRICTORS IN A PAIR HAVE THE PAIRS IN WHICH BOTH FLOW RESTRICTORS IN A PAIR HAVE THE SAME FLOW CHARACTERISTICS AND THE FLOW RESTRICTORS IN ONE PAIR HAVE DIFFERENT FLOW CHARACTERISTICS FROM THE FLOW RESTRICTORS IN THE OTHER PAIR, AND MEANS FOR MEASURING THE DIFFERENTIAL PRESSURE ACROSS THE TWO OF SAID FLOW RESTRICTORS WHERE THE DIFFERENTIAL PRESSURE VARIES LINEARLY WITH THE MASS FLOW RATE OF FLUID PASSING THROUGH SAID FLOWMETER.
References Cited (Backward Citations)
US2728219A
Cited
US2838927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |