Patent US2741916A successfully refreshed from Google Patents.
US2741916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flowmeter
Assignee: Phillips Petroleum Co
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Filing: 1953-04-06
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Granted: 1956-04-17
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Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Bruce F Wiley
- 👤 Ernest L Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:58
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/68; E; E21; E21B; E21B47/00; E21B47/10; G01F1/05; G01F1/10; G01F1/106
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
FLOW MEASURING APPARATUS TO DETERMINE THE RATE OF FLUID FLOW BETWEEN FIRST AND SECOND SPACED REGIONS WHEN THERE IS A FLUID PRESSURE DIFFERENTIAL THEREBETWEEN COMPRISING, IN COMBINATION, FIRST AND SECOND CONDUIT MEANS EACH COMMUNICATING BETWEEN SAID FIRST AND SECOND REGIONS, A ROTATABLE IMPELLER DISPOSED IN SAID FIRST CONDUIT MEANS, MEANS COUPLED TO SAID IMPELLER TO CAUSE ROTATION THEREOF, FLOW RESPONSIVE MEANS DISPOSED IN SAID SECOND CONDUIT MEANS, MEANS RESPONSIVE TO SAID FLOW RESPONSIVE MEANS TO VARY THE SPEED OF ROTATION OF SAID IMPELLER UNTIL THERE IS A PREDETERMINED FLOW THROUGH SAID SECOND CONDUIT MEANS, AND MEANS TO MEASURE THE SPEED OF ROTATION OF SAID IMPELLER WHICH IS REPRESENTATIVE OF THE RATE OF FLUID FLOW THROUGH SAID FIRST CONDUIT MEANS.
Claim 2
Dependent Claim
119 words
FLOW MEASURING APPARATUS TO DETERMINE THE RATE OF FLUID FLOW BETWEEN FIRST AND SECOND SPACED REGIONS WHEN THERE IS A FLUID PRESSURE DIFFERENTIAL THEREBETWEEN COMPRISING, IN COMBINATION, FIRST AND SECOND CONDUIT MEANS EACH COMMUNICATING BETWEEN SAID FIRST AND SECOND REGIONS, A ROTATABLE IMPELLER DISPOSED IN SAID FIRST CONDUIT MEANS, MEANS COUPLED TO SAID IMPELLER TO CAUSE ROTATION THEREOF, FLOW RESPONSIVE MEANS DISPOSED IN SAID SECOND CONDUIT MEANS, MEANS RESPONSIVE TO SAID FLOW RESPONSIVE MEANS TO VARY THE SPEED OF ROTATION OF SAID IMPELLER UNTIL THERE IS A PREDETERMINED FLOW THROUGH SAID SECOND CONDUIT MEANS, AND MEANS TO MEASURE THE SPEED OF ROTATION OF SAID IMPELLER WHICH IS REPRESENTATIVE OF THE RATE OF FLUID FLOW THROUGH SAID FIRST CONDUIT MEANS.
Claim 3
Dependent Claim
111 words
APPARATUS TO TELEMETER A FREQUENCY SIGNAL FROM A FIRST LOCATION TO A SECOND LOCATION COMPRISING, IN COMBINATION; FIRST MEANS TO GENERATE ELECTRICAL PULSES OF CONSTANT MAGNITUDE, THE FREQUENCY OF WHICH IS PROPORTIONAL TO THE FREQUENCY OF SAID SIGNAL; SECOND MEANS ENERGIZED BY THE OUTPUT OF SAID FIRST MEANS TO INTEGRATE SAID PULSES TO ESTABLISH A VOLTAGE, THE MAGNITUDE OF WHICH IS PROPORTIONAL TO THE FREQUENCY OF SAID GENERATED PULSES; A VARIABLE FREQUENCY OSCILLATOR, SAID OSCILLATOR INCLUDING A TUNED CIRCUIT; AND THIRD MEANS TO VARY THE TUNING OF SAID CIRCUIT RESPONSIVE TO THE MAGNITUDE OF SAID INTEGRATED VOLTAGE WHEREBY THE FREQUENCY OF SAID OSCILLATOR IS PROPORTIONAL TO THE FREQUENCY OF SAID SIGNAL.
Claim 4
Dependent Claim
111 words
APPARATUS TO TELEMETER A FREQUENCY SIGNAL FROM A FIRST LOCATION TO A SECOND LOCATION COMPRISING, IN COMBINATION; FIRST MEANS TO GENERATE ELECTRICAL PULSES OF CONSTANT MAGNITUDE, THE FREQUENCY OF WHICH IS PROPORTIONAL TO THE FREQUENCY OF SAID SIGNAL; SECOND MEANS ENERGIZED BY THE OUTPUT OF SAID FIRST MEANS TO INTEGRATE SAID PULSES TO ESTABLISH A VOLTAGE, THE MAGNITUDE OF WHICH IS PROPORTIONAL TO THE FREQUENCY OF SAID GENERATED PULSES; A VARIABLE FREQUENCY OSCILLATOR, SAID OSCILLATOR INCLUDING A TUNED CIRCUIT; AND THIRD MEANS TO VARY THE TUNING OF SAID CIRCUIT RESPONSIVE TO THE MAGNITUDE OF SAID INTEGRATED VOLTAGE WHEREBY THE FREQUENCY OF SAID OSCILLATOR IS PROPORTIONAL TO THE FREQUENCY OF SAID SIGNAL.
References Cited (Backward Citations)
US2420013A
Cited
US2654433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |