US3263446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock isolator for rotary drill string
Assignee: ExxonMobil Upstream Research Co
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Filing: 1963-08-20
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Granted: 1966-08-02
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Expires: 1983-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:15
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/72; F16D3/74; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/07; E21B17/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A SHOCK ISOLATOR COUPLING COMPRISING AN ESSENTIALLY TUBULAR ELEMENT ADAPTED FOR CONNECTION IN A ROTARY DRILL STRING, AT LEAST A PORTION OF SAID ELEMENT CONSISTING OF BELLOWS-LIKE INTERNAL AND EXTERNAL CONVOLUTIONS AT LEAST PARTIALLY FILLED WITH A RESLILENT MATERIAL; A PERIMETRIC SHOULDER ON SAID TUBULAR ELEMENT INTERMEDIATE ONE END THEREOF AND SAID CONVOLUTIONS, SAID SHOULDER FACING SAID ONE END; AND A SLEEVE SURROUNDING SAID CONVOLUTIONS AND ATTACHED TO SAID TUBULAR ELEMENT INTERMEDIATE SAID CONVOLUTIONS AND THE OTHER END THEREOF, SAID SLEEVE EXTENDING
Claim 2
Dependent Claim
82 words
A SHOCK ISOLATOR COUPLING COMPRISING AN ESSENTIALLY TUBULAR ELEMENT ADAPTED FOR CONNECTION IN A ROTARY DRILL STRING, AT LEAST A PORTION OF SAID ELEMENT CONSISTING OF BELLOWS-LIKE INTERNAL AND EXTERNAL CONVOLUTIONS AT LEAST PARTIALLY FILLED WITH A RESLILENT MATERIAL; A PERIMETRIC SHOULDER ON SAID TUBULAR ELEMENT INTERMEDIATE ONE END THEREOF AND SAID CONVOLUTIONS, SAID SHOULDER FACING SAID ONE END; AND A SLEEVE SURROUNDING SAID CONVOLUTIONS AND ATTACHED TO SAID TUBULAR ELEMENT INTERMEDIATE SAID CONVOLUTIONS AND THE OTHER END THEREOF, SAID SLEEVE EXTENDING
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |