US3122707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discriminator for frequency modulated seismic signals
Assignee: Atlantic Richfield Co
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Filing: 1960-08-19
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Granted: 1964-02-25
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Josiah J Godbey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:18
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/38; H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A DISCRIMINATOR FOR DEMODULATING A FREQUENCY MODULATED SEISMIC SIGNAL COMPRISING (A) A FIRST DETECTOR MEANS INCLUDING (1) A FIRST RECTIFIER, (2) A FIRST LOAD RESISTOR, AND (3) A FIRST CAPACITOR, ONE SIDE OF SAID FIRST CAPACITOR AND ONE SIDE OF SAID FIRST LOAD RESISTOR CONNECTED IN PARALLEL TO SAID FIRST RECTIFIER, (B) A SECOND DETECTOR MEANS INCLUDING (1) A SECOND RECTIFIER, (2) A SECOND LOAD RESISTOR, AND (3) A SECOND CAPACITOR, ONE SIDE OF SAID SECOND CAPACITOR AND ONE SIDE OF SAID SECOND LOAD RESISTOR CONNECTED IN PARALLEL TO SAID SECOND RECTIFIER, A SECOND SIDE OF SAID SECOND CAPACITOR AND A SECOND SIDE OF SAID LOAD RESISTOR CONNECTED TO A COMMON POINT WITH A SECOND SIDE OF SAID FIRST CAPACITOR AND A SECOND SIDE OF SAID FIRST LOAD RESISTOR, (C) AN INPUT MEANS INCLUDING (1) A FIRST INPUT CIRCUIT CONNECTED TO SAID FIRST DETECTOR MEANS, AND (2) A SECOND INPUT CIRCUIT INCLUDING A PIEZOELECTRIC CRYSTAL MEANS AND A VARIABLE CAPACITOR CONNECTED IN SERIES TO SAID SECOND DETECTOR MEANS, SAID FIRST AND SECOND INPUT CIRCUITS CONNECTED IN PARALLEL, AND (D) THIRD AND FOURTH LOAD RESISTORS CONNECTED IN SERIES BETWEEN INPUTS OF SAID FIRST AND SECOND RECTIFIERS, ADJACENT ENDS OF SAID THIRD AND FOURTH LOAD RESISTORS CONNECTED DIRECTLY TO SAID COMMON POINT.
Claim 2
Dependent Claim
210 words
A DISCRIMINATOR FOR DEMODULATING A FREQUENCY MODULATED SEISMIC SIGNAL COMPRISING (A) A FIRST DETECTOR MEANS INCLUDING (1) A FIRST RECTIFIER, (2) A FIRST LOAD RESISTOR, AND (3) A FIRST CAPACITOR, ONE SIDE OF SAID FIRST CAPACITOR AND ONE SIDE OF SAID FIRST LOAD RESISTOR CONNECTED IN PARALLEL TO SAID FIRST RECTIFIER, (B) A SECOND DETECTOR MEANS INCLUDING (1) A SECOND RECTIFIER, (2) A SECOND LOAD RESISTOR, AND (3) A SECOND CAPACITOR, ONE SIDE OF SAID SECOND CAPACITOR AND ONE SIDE OF SAID SECOND LOAD RESISTOR CONNECTED IN PARALLEL TO SAID SECOND RECTIFIER, A SECOND SIDE OF SAID SECOND CAPACITOR AND A SECOND SIDE OF SAID LOAD RESISTOR CONNECTED TO A COMMON POINT WITH A SECOND SIDE OF SAID FIRST CAPACITOR AND A SECOND SIDE OF SAID FIRST LOAD RESISTOR, (C) AN INPUT MEANS INCLUDING (1) A FIRST INPUT CIRCUIT CONNECTED TO SAID FIRST DETECTOR MEANS, AND (2) A SECOND INPUT CIRCUIT INCLUDING A PIEZOELECTRIC CRYSTAL MEANS AND A VARIABLE CAPACITOR CONNECTED IN SERIES TO SAID SECOND DETECTOR MEANS, SAID FIRST AND SECOND INPUT CIRCUITS CONNECTED IN PARALLEL, AND (D) THIRD AND FOURTH LOAD RESISTORS CONNECTED IN SERIES BETWEEN INPUTS OF SAID FIRST AND SECOND RECTIFIERS, ADJACENT ENDS OF SAID THIRD AND FOURTH LOAD RESISTORS CONNECTED DIRECTLY TO SAID COMMON POINT.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |