US3208349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well sounder with electrically moveable sear pin
Assignee: Individual
•
Filing: 1962-02-12
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Granted: 1965-09-28
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Expires: 1982-02-12
Abstract
No abstract record available.
Inventors
- 👤 John K Burnett
- 👤 Ekparian John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/04; E21B47/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A CARTRIDGE FIRING DEVICE FOR USE WITH ACOUSTIC WELL SOUNDING EQUIPMENT COMPRISING: (A) A HOLLOW BREECH BLOCK OPEN AT OPPOSITE ENDS, (B) A FIRING PIN MOUNTED AT ONE END OF THE BREECH BLOCK TO BE MOVABLE LONGITUDINALLY BETWEEN A COCKED AND A FIRING POSITION, (C) A GUIDE DISPOSED ADJACENT THE FIRING PIN, THE GUIDE HAVING A LONGITUDINAL SLOT WITH A SURFACE INCLINED AT AN ANGLE TO THE SLOT, (D) A TRANSVERSE PROJECTION ON THE FIRING PIN AND ADAPTED TO REST ON THE INCLINED SURFACE TO HOLD THE FIRING PIN IN THE COCKED POSTION, (E) SPRING MEANS URGING THE PROJECTION TOWARD THE SLOT AND THE FIRING PIN TOWARD THE FIRING POSITION, (F) A LONGITUDINALLY MOVABLE SEAR PIN DISPOSED IN THE SLOT ADJACENT THE INCLINED SURFACE TO ENGAGE THE PROJECTION AND PREVENT IT FROM MOVING INTO THE SLOT, AND (G) SOLENOID-ACTUATED MEANS FOR MOVING THE SEAR PIN AWAY FROM THE INCLINED SURFACE TO LET THE PROJECTION MOVE INTO THE SLOT AND ALLOW THE SPRING MEANS TO MOVE THE FIRING PIN TO THE FIRING POSITION.
Claim 2
Dependent Claim
172 words
A CARTRIDGE FIRING DEVICE FOR USE WITH ACOUSTIC WELL SOUNDING EQUIPMENT COMPRISING: (A) A HOLLOW BREECH BLOCK OPEN AT OPPOSITE ENDS, (B) A FIRING PIN MOUNTED AT ONE END OF THE BREECH BLOCK TO BE MOVABLE LONGITUDINALLY BETWEEN A COCKED AND A FIRING POSITION, (C) A GUIDE DISPOSED ADJACENT THE FIRING PIN, THE GUIDE HAVING A LONGITUDINAL SLOT WITH A SURFACE INCLINED AT AN ANGLE TO THE SLOT, (D) A TRANSVERSE PROJECTION ON THE FIRING PIN AND ADAPTED TO REST ON THE INCLINED SURFACE TO HOLD THE FIRING PIN IN THE COCKED POSTION, (E) SPRING MEANS URGING THE PROJECTION TOWARD THE SLOT AND THE FIRING PIN TOWARD THE FIRING POSITION, (F) A LONGITUDINALLY MOVABLE SEAR PIN DISPOSED IN THE SLOT ADJACENT THE INCLINED SURFACE TO ENGAGE THE PROJECTION AND PREVENT IT FROM MOVING INTO THE SLOT, AND (G) SOLENOID-ACTUATED MEANS FOR MOVING THE SEAR PIN AWAY FROM THE INCLINED SURFACE TO LET THE PROJECTION MOVE INTO THE SLOT AND ALLOW THE SPRING MEANS TO MOVE THE FIRING PIN TO THE FIRING POSITION.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |