Patent US3360047A successfully refreshed from Google Patents.
US3360047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well drilling device
Assignee: Individual
•
Filing: 1965-05-18
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Granted: 1967-12-26
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 Bob J Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/063; E21B17/00; E21B17/02; E21B17/04; E21B21/00; E21B21/10; E21B21/103; Y; Y10; Y10T; Y10T137/00; Y10T137/1624
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A TUBULAR SUB MEMBER HAVING A GROUP OF TUBULAR CONNECTING MEANS AT BOTH OF ITS ENDS, THE WALLS OF THE MEMBER HAVING APERTURES THERETHROUGH EXTENDING FROM THE INTERIOR TO THE EXTERIOR, AND PLUG MEMBERS DISPOSED IN SAID APERTURES AND FRICTIONALLY ENGAGE THEREWITH SO AS TO BE COMPLETELY REMOVABLE EXPLOSIVELY UNDER INTERNAL FLUID PRESSURES BELOW THAT REQUIRED TO RUPTURE OTHER PORTIONS OF THE MEMBER, SAID APERTURES BEING DISPOSED IN STAGGERED RELATION AXIALLY OF THE TUBULAR MEMBER AND SAID PLUG MEMBERS BEING CONTAINED IN THE APERTURES COMPLETELY WITHIN THE LIMITS OF THE THICKNESS OF THE WALLS.
Claim 2
Independent Claim
101 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A TUBULAR SUB MEMBER HAVING A GROUP OF TUBULAR CONNECTING MEANS AT BOTH OF ITS ENDS, THE WALLS OF THE MEMBER HAVING APERTURES THERETHROUGH EXTENDING FROM THE INTERIOR TO THE EXTERIOR, AND PLUG MEMBERS DISPOSED IN SAID APERTURES AND FRICTIONALLY ENGAGE THEREWITH SO AS TO BE COMPLETELY REMOVABLE EXPLOSIVELY UNDER INTERNAL FLUID PRESSURES BELOW THAT REQUIRED TO RUPTURE OTHER PORTIONS OF THE MEMBER, SAID APERTURES BEING DISPOSED IN STAGGERED RELATION AXIALLY OF THE TUBULAR MEMBER AND SAID PLUG MEMBERS BEING CONTAINED IN THE APERTURES COMPLETELY WITHIN THE LIMITS OF THE THICKNESS OF THE WALLS.
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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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |