US2836249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for hydraulic fracturing
Assignee: Phillips Petroleum Co
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Filing: 1954-11-26
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Granted: 1958-05-27
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Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 Gearld I Freeze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:56
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A SEALING SLEEVE ADAPTED TO FORM A SEALED PASSAGEWAY FROM A TUBING IN A WELL BORE AND THROUGH A PUMP CAVITY ATTACHED TO SAID TUBING, SAID PUMP CAVITY BEING ADAPTED TO RECEIVE A PUMP AND HAVING POWER FLUID SUPPLY PORTS IN THE WALL THEREOF, WHICH COMPRISES: A TUBE ADAPTED TO BE INSERTED THROUGH SAID TUBING AND INTO SAID PUMP CAVITY; A FIRST SEALING MEANS COMPRISING A RESILIENT PACKING MATERIAL ATTACHED TO THE UPPER PORTION OF SAID TUBE AND ADAPTED TO FORM A SEAL WITH SAID TUBING AT A POINT ABOVE SAID PUMP CAVITY; AND A SECOND SEALING MEANS COMPRISING A TAPERED END ON THE LOWER EXTERMITY OF SAID TUBE ADAPTED TO SEAT IN A STANDING VALVE SEATING SHOE ATTACHED TO THE BOTTOM OF SAID PUMP CAVITY.
Claim 2
Dependent Claim
126 words
A SEALING SLEEVE ADAPTED TO FORM A SEALED PASSAGEWAY FROM A TUBING IN A WELL BORE AND THROUGH A PUMP CAVITY ATTACHED TO SAID TUBING, SAID PUMP CAVITY BEING ADAPTED TO RECEIVE A PUMP AND HAVING POWER FLUID SUPPLY PORTS IN THE WALL THEREOF, WHICH COMPRISES: A TUBE ADAPTED TO BE INSERTED THROUGH SAID TUBING AND INTO SAID PUMP CAVITY; A FIRST SEALING MEANS COMPRISING A RESILIENT PACKING MATERIAL ATTACHED TO THE UPPER PORTION OF SAID TUBE AND ADAPTED TO FORM A SEAL WITH SAID TUBING AT A POINT ABOVE SAID PUMP CAVITY; AND A SECOND SEALING MEANS COMPRISING A TAPERED END ON THE LOWER EXTERMITY OF SAID TUBE ADAPTED TO SEAT IN A STANDING VALVE SEATING SHOE ATTACHED TO THE BOTTOM OF SAID PUMP CAVITY.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |