Patent US3263446A successfully refreshed from Google Patents.
US3263446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock isolator for rotary drill string
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1963-08-20
•
Granted: 1966-08-02
•
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 22:51
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
References Cited (Backward Citations)
US1871227A
Cited
US1889868A
Cited
US2301105A
Cited
CH272052A
Cited
US2756022A
Cited
US2870617A
Cited
FR1169407A
Cited
US3122902A
Cited
US3156106A
Cited
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 |