Patent US3221298A successfully refreshed from Google Patents.
US3221298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coded signal seismic source
Assignee: ExxonMobil Upstream Research Co
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Filing: 1962-08-27
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Granted: 1965-11-30
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Kay N Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:26
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A SYSTEM FOR GENERATING A DRIVE SIGNAL FOR A VIBRATOR FOR IMPRTING A SEISMIC INPUT CODE INTO THE EARTH WHICH COMPRISES THE FOLLOWING ELEMENTS: (A) FIRST GENERATING MEANS FOR GENERATING A SIGNAL WHICH IS DEFINED AS COS2 WOT; (B) A BISTABLE MULTIVIBRATOR MEANS HAVING TWO STABLE STATES WHICH CHANGES FROM ONE STATE TO THE NEXT AT EACH MINIMUM VALUE OF EACH SIGNAL GENERATED IN ELEMENT (A); (C) A CODE GENERAOR FOR GENERATING A BINARY CODE; (D) MEANS CONNECTING THE OUTPUT OF SAID BI-STABLE MULTIVIBRATOR MEANS TO SAID CODE GENERATOR, SAID MEANS INCLUDING A LIMITER AND DIFFERENTIATOR CIRCUIT AND A CLIPPER OF ONE POLARITY, EACH PULSE FROM EACH CLIPPER INITIATING A BINARY BIT IN SAID CODE GENERATOR; (E) FIRST MULTIPLIER MEANS FOR MULTIPLYING THE OUTPUT SIGNAL OF ELEMENT (A) TIMES THE OUTPUT SIGNAL OF ELEMENT (B); (F) SECOND MULTIPLIER MEANS TO MULTIPLY THE OUTPUT OF SAID CODE GENERATOR MEANS BY THE OUTPUT OF SAID FIRST MULTIPLIER MEANS.
Claim 2
Independent Claim
156 words
A SYSTEM FOR GENERATING A DRIVE SIGNAL FOR A VIBRATOR FOR IMPRTING A SEISMIC INPUT CODE INTO THE EARTH WHICH COMPRISES THE FOLLOWING ELEMENTS: (A) FIRST GENERATING MEANS FOR GENERATING A SIGNAL WHICH IS DEFINED AS COS2 WOT; (B) A BISTABLE MULTIVIBRATOR MEANS HAVING TWO STABLE STATES WHICH CHANGES FROM ONE STATE TO THE NEXT AT EACH MINIMUM VALUE OF EACH SIGNAL GENERATED IN ELEMENT (A); (C) A CODE GENERAOR FOR GENERATING A BINARY CODE; (D) MEANS CONNECTING THE OUTPUT OF SAID BI-STABLE MULTIVIBRATOR MEANS TO SAID CODE GENERATOR, SAID MEANS INCLUDING A LIMITER AND DIFFERENTIATOR CIRCUIT AND A CLIPPER OF ONE POLARITY, EACH PULSE FROM EACH CLIPPER INITIATING A BINARY BIT IN SAID CODE GENERATOR; (E) FIRST MULTIPLIER MEANS FOR MULTIPLYING THE OUTPUT SIGNAL OF ELEMENT (A) TIMES THE OUTPUT SIGNAL OF ELEMENT (B); (F) SECOND MULTIPLIER MEANS TO MULTIPLY THE OUTPUT OF SAID CODE GENERATOR MEANS BY THE OUTPUT OF SAID FIRST MULTIPLIER MEANS.
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |