Patent US3072790A successfully refreshed from Google Patents.
US3072790A
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Apparatus for cyclic activation logging
Assignee: Well Surveys Inc
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Filing: 1959-03-13
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Granted: 1963-01-08
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Eric C Hopkinson
- 👤 Robert L Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:41
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/104; G01V5/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
APPARATUS FOR CYCLIC ACTIVATION LOGGING COMPRISING A SUBSURFACE INSTRUMENT; A SURFACE UNIT; AND A CABLE FOR SUSPENDING SAID SUBSURFACE INSTRUMENT IN A BOREHOLE TO BE LOGGED AND PROVIDING ELECTRICAL CONNECTION BETWEEN SAID INSTRUMENT AND SAID SURFACE UNIT; SAID INSTRUMENT INCLUDING AN ACCELERATOR TYPE RADIATION SOURCE, A PLURALITY OF RADIATION DETECTORS, MEANS RESPONSIVE TO A SIGNAL FROM SAID SURFACE UNIT TO PERIODICALLY DE-ENERGIZE SAID SOURCE, MEANS RESPONSIVE TO SIGNALS FROM SAID SURFACE UNIT TO CONNECT THE OUTPUTS OF SAID RADIATION DETECTORS TO SAID CABLE AND TO DISCONNECT THE OUTPUTS OF SAID RADIATION DETECTORS FROM SAID CABLE IN A PREDETERMINED TIME SEQUENCE RELATED TO THE CYCLE OF ENERGIZATION OF SAID SOURCE; SAID SURFACE UNIT INCLUDING MEANS GENERATING SAID SIGNALS, AND MEANS FOR APPLYING SAID SIGNALS TO SAID CABLE IN A PREDETERMINED TIME SEQUENCE.
Claim 2
Dependent Claim
131 words
APPARATUS FOR CYCLIC ACTIVATION LOGGING COMPRISING A SUBSURFACE INSTRUMENT; A SURFACE UNIT; AND A CABLE FOR SUSPENDING SAID SUBSURFACE INSTRUMENT IN A BOREHOLE TO BE LOGGED AND PROVIDING ELECTRICAL CONNECTION BETWEEN SAID INSTRUMENT AND SAID SURFACE UNIT; SAID INSTRUMENT INCLUDING AN ACCELERATOR TYPE RADIATION SOURCE, A PLURALITY OF RADIATION DETECTORS, MEANS RESPONSIVE TO A SIGNAL FROM SAID SURFACE UNIT TO PERIODICALLY DE-ENERGIZE SAID SOURCE, MEANS RESPONSIVE TO SIGNALS FROM SAID SURFACE UNIT TO CONNECT THE OUTPUTS OF SAID RADIATION DETECTORS TO SAID CABLE AND TO DISCONNECT THE OUTPUTS OF SAID RADIATION DETECTORS FROM SAID CABLE IN A PREDETERMINED TIME SEQUENCE RELATED TO THE CYCLE OF ENERGIZATION OF SAID SOURCE; SAID SURFACE UNIT INCLUDING MEANS GENERATING SAID SIGNALS, AND MEANS FOR APPLYING SAID SIGNALS TO SAID CABLE IN A PREDETERMINED TIME SEQUENCE.
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |