US3315524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass-flow measuring device
Assignee: Elster Metering Holdings Ltd
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Filing: 1964-01-06
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Granted: 1967-04-25
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Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Duffy Laurence Sidney
- 👤 Hutcheon Ian Carrodus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/64; G; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/90; G01F15/00; G01F15/02; G01F15/022; G01F15/024; G01F15/07; G01F15/075; G01F15/0755; G01R; G01R23/00; G01R23/02; G01R23/06; G01R23/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A SYSTEM FOR CONVERTING ONE SERIES OF ELECTRICAL PULSES, HAVING ONE MEAN PULSE REPETITION RATE, INTO ANOTHER SERIES OF ELECTRICAL PULSES HAVING ANOTHER MEAN PULSE REPETITION RATE, THE SYSTEM COMPRISING AN INPUT DIODE PUMP AND AN OUTPUT DIODE PUMP, A RESERVOIR CAPACITOR CONNECTED AS LOAD TO THE INPUT DIODE PUMP AND AS SOURCE TO THE OUTPUT DIODE PUMP; MEANS FOR CONNECTING THE INPUT DIODE PUMP TO A POTENTIAL SOURCE; MEANS FOR DRIVING THE INPUT DIODE PUMP AT A STOKE FREQUENCY RELATED TO AN INPUT SIGNAL HAVING THE SAID ONE MEAN PULSE REPETITION RATE; AND MEANS FOR DRIVING THE OUTPUT DIODE PUMP AT A MEAN STROKE FREQUENCY CONTROLLED BY THE VOLTAGE ON THE RESERVOIR CAPACITOR AND FOR DERIVING THEREFROM AN OUTPUT SIGNAL OF THE OUTPUT PUMP STROKE FREQUENCY, WHICH IS THE SAID OTHER MEANS PULSE REPETITION RATE.
Claim 2
Independent Claim
136 words
A SYSTEM FOR CONVERTING ONE SERIES OF ELECTRICAL PULSES, HAVING ONE MEAN PULSE REPETITION RATE, INTO ANOTHER SERIES OF ELECTRICAL PULSES HAVING ANOTHER MEAN PULSE REPETITION RATE, THE SYSTEM COMPRISING AN INPUT DIODE PUMP AND AN OUTPUT DIODE PUMP, A RESERVOIR CAPACITOR CONNECTED AS LOAD TO THE INPUT DIODE PUMP AND AS SOURCE TO THE OUTPUT DIODE PUMP; MEANS FOR CONNECTING THE INPUT DIODE PUMP TO A POTENTIAL SOURCE; MEANS FOR DRIVING THE INPUT DIODE PUMP AT A STOKE FREQUENCY RELATED TO AN INPUT SIGNAL HAVING THE SAID ONE MEAN PULSE REPETITION RATE; AND MEANS FOR DRIVING THE OUTPUT DIODE PUMP AT A MEAN STROKE FREQUENCY CONTROLLED BY THE VOLTAGE ON THE RESERVOIR CAPACITOR AND FOR DERIVING THEREFROM AN OUTPUT SIGNAL OF THE OUTPUT PUMP STROKE FREQUENCY, WHICH IS THE SAID OTHER MEANS PULSE REPETITION RATE.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |