Patent US3094875A successfully refreshed from Google Patents.
US3094875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low level voltage to frequency converter
Assignee: Phillips Petroleum Co
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Filing: 1961-09-29
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Granted: 1963-06-25
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Dale A Fluegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:15
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN ANALOG TO DIGITAL CONVERTER FOR LOW VOLTAGE ANALOG SIGNALS COMPRISING FIRST, SECOND, AND THIRD TERMINALS; AN INDUCTANCE CONNECTED BETWEEN SAID FIRST AND SECOND TERMINALS; FIRST AND SECOND VOLTAGE-SENSITIVE CAPACITORS CONNECTED IN SERIES BETWEEN SAID FIRST AND SECOND TERMINALS AND IN PARALLEL WITH SAID INDUCTANCE; MEANS FOR APPLYING AN ANALOG VOLTAGE SIGNAL BETWEEN SAID THIRD TERMINAL AND THE JUNCTION BETWEEN SAID FIRST AND SECOND VOLTAGE SENSITIVE CAPACITORS; AN AMPLIFIER; MEANS FOR CONNECTING SAID FIRST AND SECOND TERMINALS TO SAID AMPLIFIER TO FORM AN OSCILLATOR CIRCUIT; A GATING CIRCUIT; MEANS FOR CONNECTING THE OUTPUT OF SAID OSCILLATOR CIRCUIT TO THE INPUT OF SAID GATING CIRCUIT; A BINARY COUNTER; AND MEANS FOR CONNECTING THE OUTPUT OF SAID GATING CIRCUIT TO THE INPUT OF SAID BINARY COUNTER.
Claim 2
Dependent Claim
124 words
AN ANALOG TO DIGITAL CONVERTER FOR LOW VOLTAGE ANALOG SIGNALS COMPRISING FIRST, SECOND, AND THIRD TERMINALS; AN INDUCTANCE CONNECTED BETWEEN SAID FIRST AND SECOND TERMINALS; FIRST AND SECOND VOLTAGE-SENSITIVE CAPACITORS CONNECTED IN SERIES BETWEEN SAID FIRST AND SECOND TERMINALS AND IN PARALLEL WITH SAID INDUCTANCE; MEANS FOR APPLYING AN ANALOG VOLTAGE SIGNAL BETWEEN SAID THIRD TERMINAL AND THE JUNCTION BETWEEN SAID FIRST AND SECOND VOLTAGE SENSITIVE CAPACITORS; AN AMPLIFIER; MEANS FOR CONNECTING SAID FIRST AND SECOND TERMINALS TO SAID AMPLIFIER TO FORM AN OSCILLATOR CIRCUIT; A GATING CIRCUIT; MEANS FOR CONNECTING THE OUTPUT OF SAID OSCILLATOR CIRCUIT TO THE INPUT OF SAID GATING CIRCUIT; A BINARY COUNTER; AND MEANS FOR CONNECTING THE OUTPUT OF SAID GATING CIRCUIT TO THE INPUT OF SAID BINARY COUNTER.
References Cited (Backward Citations)
US2721267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |