Patent US3343408A successfully refreshed from Google Patents.
US3343408A
Expired / Lapsed
US
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Tracer injector and detector
Assignee: Well Reconnaissance Inc
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Filing: 1963-05-13
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Granted: 1967-09-26
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:22
CPC Classifications
E; E21; E21B; E21B27/00; E21B27/02; E21B47/00; E21B47/10; E21B47/11; E21B47/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A DEVICE FOR DETERMINING CONDITIONS IN A WELL COMPRISING A CONTAINER SUPPORTABLE BY A CABLE WITHIN SAID WELL, A CYLINDRICAL CHAMBER IN SAID CONTAINER FOR STORING A FLUID TRACER, A PISTON SLIDABLE IN AND SEALINGLY ENGAGING A SIDE WALL OF SAID CHAMBER FOR EJECTING SUBSTANTIALLY ALL OF SAID TRACER THEREFROM, MOTOR MEANS IN SAID CONTAINER AND CONTROLLABLE FROM THE SURFACE FOR INTERMITTENTLY DRIVING SAID PISTON AT A PREDETERMINED RATE IN SAID CHAMBER AND THEREBY DETERMINING THE EXACT QUANTITY OF SAID TRACER EJECTED FROM SAID CHAMBER IN ANY EJECTION, AND SENSING MEANS IN SAID CONTAINER FOR SENSING THE TRACER SO INJECTED.
Claim 2
Independent Claim
100 words
A DEVICE FOR DETERMINING CONDITIONS IN A WELL COMPRISING A CONTAINER SUPPORTABLE BY A CABLE WITHIN SAID WELL, A CYLINDRICAL CHAMBER IN SAID CONTAINER FOR STORING A FLUID TRACER, A PISTON SLIDABLE IN AND SEALINGLY ENGAGING A SIDE WALL OF SAID CHAMBER FOR EJECTING SUBSTANTIALLY ALL OF SAID TRACER THEREFROM, MOTOR MEANS IN SAID CONTAINER AND CONTROLLABLE FROM THE SURFACE FOR INTERMITTENTLY DRIVING SAID PISTON AT A PREDETERMINED RATE IN SAID CHAMBER AND THEREBY DETERMINING THE EXACT QUANTITY OF SAID TRACER EJECTED FROM SAID CHAMBER IN ANY EJECTION, AND SENSING MEANS IN SAID CONTAINER FOR SENSING THE TRACER SO INJECTED.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |