Patent US3075383A successfully refreshed from Google Patents.
US3075383A
Expired / Lapsed
US
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Flowmeter
Assignee: Lucas Support Services Ltd
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Filing: 1960-12-14
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Granted: 1963-01-29
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Expires: 1980-12-14
Abstract
No abstract record available.
Inventors
- 👤 Favill William Arnold
- 👤 Taylor Dennis Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:25
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/08; G01F1/00; G01F1/05; G01F1/10; G01F1/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A FLOW METER COMPRISING A CONDUIT, A ROTOR MOUNTED WITHIN THE CONDUIT AND ARRANGED TO BE ROTATED BY PASSAGE OF FLUID THROUGH THE CONDUIT, A TRANSDUCER COIL EXTERNAL TO THE CONDUIT WHICH COACTS WITH SAID ROTOR TO GENERATE PULSES AT A REPETITION FREQUENCY DETERMINED BY THE RATE OF FLOW OF FLUID THROUGH THE CONDUIT, A COUNTER FOR COUNTING THE PULSES GENERATED BY SAID COIL, A PAIR OF PROBES IN THE CONDUIT, AN ELECTRONIC OSCILLATOR WHICH IS COUPLED TO THE PROBES AND CONTROLLED AS TO ITS EFFECTIVENESS BY THE ELECTRICAL RESISTANCE OF THE FLUID FLOWING THROUGH THE CONDUIT AND A GATE CONTROLLED BY THE OSCILLATOR FOR PREVENTING THE PASSAGE OF PULSES FROM THE COIL TO THE COUNTER WHEN AIR IS TRAVERSING THE CONDUIT BUT PERMITTING SUCH PASSAGE OF PULSES WHEN LIQUID IS TRAVERSING THE CONDUIT.
Claim 2
Dependent Claim
134 words
A FLOW METER COMPRISING A CONDUIT, A ROTOR MOUNTED WITHIN THE CONDUIT AND ARRANGED TO BE ROTATED BY PASSAGE OF FLUID THROUGH THE CONDUIT, A TRANSDUCER COIL EXTERNAL TO THE CONDUIT WHICH COACTS WITH SAID ROTOR TO GENERATE PULSES AT A REPETITION FREQUENCY DETERMINED BY THE RATE OF FLOW OF FLUID THROUGH THE CONDUIT, A COUNTER FOR COUNTING THE PULSES GENERATED BY SAID COIL, A PAIR OF PROBES IN THE CONDUIT, AN ELECTRONIC OSCILLATOR WHICH IS COUPLED TO THE PROBES AND CONTROLLED AS TO ITS EFFECTIVENESS BY THE ELECTRICAL RESISTANCE OF THE FLUID FLOWING THROUGH THE CONDUIT AND A GATE CONTROLLED BY THE OSCILLATOR FOR PREVENTING THE PASSAGE OF PULSES FROM THE COIL TO THE COUNTER WHEN AIR IS TRAVERSING THE CONDUIT BUT PERMITTING SUCH PASSAGE OF PULSES WHEN LIQUID IS TRAVERSING THE CONDUIT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |