US3217242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular potentiometer-like structure having three terminal junctions spaced 120 degrees apart for determining information relative to oil and gas formations
Assignee: Superior Oil Co
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Filing: 1962-11-13
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Granted: 1965-11-09
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:42
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; H; H01; H01C; H01C10/00; H01C10/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
APPARATUS FOR DETERMINING INFORMATION RELATIVE TO OIL AND GAS FORMATIONS, SAID APPARATUS COMPRISING: A POTENTIOMETER-LIKE STRUCTURE INCLUDING A RESISTIVE WINDING ARRANGED PHYSICALLY IN A PLANAR CIRCLE, SAID WINDING HAVING MUTUALLY ADJACENT ENDS ELECTRICALLY CONNECTED TOGETHER AND HAVING THREE TERMINAL JUNCTIONS DISPOSED 120 MECHANICAL DEGREES APART AROUND IT; AN ADJUSTABLE SOURCE OF POTENTIAL CONNECTED TO EACH OF SAID TERMINAL JUNCTIONS FOR IMPRESSING A CORRESPONDING POTENTIAL ON EACH, EACH OF SAID POTENTIALS HAVING A COMMON SIGNAL LEVEL; A PAIR OF WIPERS TO SLIDE AROUND SAID WINDING IN CONTACT THEREWITH AT POSITIONS THEREON SUBSTANTIALLY 180 DEGREES APART; AND A VOLTMETER HAVING A FINITE SERIES INTERNAL RESISTANCE ELECTRICALLY CONNECTED BETWEEN SAID WIPERS.
Claim 2
Dependent Claim
108 words
APPARATUS FOR DETERMINING INFORMATION RELATIVE TO OIL AND GAS FORMATIONS, SAID APPARATUS COMPRISING: A POTENTIOMETER-LIKE STRUCTURE INCLUDING A RESISTIVE WINDING ARRANGED PHYSICALLY IN A PLANAR CIRCLE, SAID WINDING HAVING MUTUALLY ADJACENT ENDS ELECTRICALLY CONNECTED TOGETHER AND HAVING THREE TERMINAL JUNCTIONS DISPOSED 120 MECHANICAL DEGREES APART AROUND IT; AN ADJUSTABLE SOURCE OF POTENTIAL CONNECTED TO EACH OF SAID TERMINAL JUNCTIONS FOR IMPRESSING A CORRESPONDING POTENTIAL ON EACH, EACH OF SAID POTENTIALS HAVING A COMMON SIGNAL LEVEL; A PAIR OF WIPERS TO SLIDE AROUND SAID WINDING IN CONTACT THEREWITH AT POSITIONS THEREON SUBSTANTIALLY 180 DEGREES APART; AND A VOLTMETER HAVING A FINITE SERIES INTERNAL RESISTANCE ELECTRICALLY CONNECTED BETWEEN SAID WIPERS.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |