US3167707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging apparatus having laterally shiftable wall engageable electrode supports
Assignee: Seismograph Service Corp
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Filing: 1960-12-29
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Granted: 1965-01-26
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Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Willis J Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:47
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1014; E21B17/1021; E21B47/00; E21B47/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
IN A WALL LOGGING TOOL, THE COMBINATION COMPRISING, A TOOL BODY, A PAIR OF ELONGATED PADS CARRIED BY SAID BODY FOR VERTICAL MOVEMENT WITH A BORE HOLE, A PLURALITY OF VERTICALLY ALINED ELECTRODES CARRIED BY AT LEAST ONE OF SAID PADS FOR SELECTIVE ENGAGEMENT WITH THE BORE HOLE WALL, REVERSIBLE POWER MEANS ASSOCIATED WITH SAID BODY FOR SIMULTANEOUSLY URGING SAID PADS LATERALLY INTO ENGAGEMENT WITH THE WALL OF THE BORE HOLES AND FOR SIMULTANEOUSLY RETRACTING SAID PADS LATERALLY FROM ENGAGEMENT WITH THE WALL OF THE BORE HOLE, SAID REVERSIBLE POWER MEANS INCLUDING A PAIR OF RESILIENT ELEMENTS EACH ASSOCIATED WITH A RESPECTIVE ONE OF SAID PADS SO THAT SAID PADS MOVE LATERALLY INDEPENDENTLY, AND MEANS FOR MAINTAINING SAID ELECTRODE CARRYING PAD PARALLEL WITH THE AXIS OF SAID TOOL BODY DURING VERTICAL MOVEMENT OF THE BODY WITHIN SAID BORE HOLE.
References Cited (Backward Citations)
US2899633A
Cited
US2876413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |