US3209830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stuffing box assembly
Assignee: ConocoPhillips Co
•
Filing: 1963-03-29
•
Granted: 1965-10-05
•
Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Orr
- 👤 Mcguire Lewis
- 👤 John W Tynan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:19
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B33/072
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
IN COMBINATION WITH A STUFFING BOX, (A) TUBULAR ADAPTER COUPLING CONNECTED AT ONE OF ITS ENDS TO THE STUFFING BOX AND ADAPTED TO BE CONNECTED AT ITS OTHER END TO A PUMPING T AT THE UPPER END OF A STRING OF OIL WELL TUBING; (B) AN EXTENSION TUBE CONNECTED AT ONE OF ITS ENDS TO SAID ADAPTED COUPLING AND HAVING ITS BORE COMMUNICATING WITH THE BORE OF SAID ADAPTER COUPLING; (C) A TUBULAR SEALING MEMBER HAVING AN AXIAL BORE THERETHROUGH DIMENSIONED TO SLIDABLY RECEIVE THE POLISHED ROD OF AN OIL WELL PUMP SUCKER ROD STRING AND POSITIONED INSIDE SAID EXTENSION TUBE AT ITS END OPPOSITE THAT END CONNECTED TO SAID ADAPTER COUPLING; AND (D) A SOURCE OF LUBRICATING FLUID IN NONADJOINING SEPARATION FROM SAID POLISHED ROD, AND MEANS CONNECING SAID SOURCE TO SAID ADAPTED COUPLIN FOR FEEDING LUBRICATING FLUID TO SAID ADAPTER COUPLING AND SAID EXTENSION TUBE.
References Cited (Backward Citations)
US657343A
Cited
US1022865A
Cited
US1594935A
Cited
US2286300A
Cited
US2544212A
Cited
US2674474A
Cited
US2772105A
Cited
US3048412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |