Patent US3301322A successfully refreshed from Google Patents.
US3301322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged well apparatus
Assignee: ExxonMobil Upstream Research Co
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Filing: 1964-01-13
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Granted: 1967-01-31
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Newsome Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:48
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0007; A; A01; A01B; A01B39/00; A01B39/20; A01B39/26; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B43/00; E21B43/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
APPARATUS FOR USE ON A SUBMERGED WELL HAVING A PIPE STRING FOR FLOW OF FLUID WHICH COMPRISES MEANS FORMING A CHAMBER ON THE UPPER END OF SAID WELL, A MOVABLE MEMBER ARRANGED IN SAID CHAMBER FOR MOVEMENT FROM A FIRST TO A SECOND POSITION AND VICE VERSA, THE UPPER END OF SAID PIPE STRING BEING ARRANGED WITHIN SAID MOVABLE MEMBER FOR MOVEMENT WITH SAID MOVABLE MEMBER AND FOR MATINGLY ENGAGING WITH THE MAJOR LENGTH OF SAID PIPE STRING, A PISTON CARRIED BY SAID MOVABLE MEMBER, A FIRST SEALING MEMBER ARRANGED ABOVE SAID PISTON FOR SEALING BETWEEN SAID MOVABLE MEMBER AND THE UPPER END OF SAID CHAMBER, A SECOND SEALING MEMBER ARRANGED BELOW SAID PISTON FOR SEALING BETWEEN SAID MOVABLE MEMBER AND THE WALL OF SAID CHAMBER, AND MEANS FOR INJECTING FLUID BETWEEN SAID FIRST SEALING MEMBER AND SAID PISTON AND BETWEEN SAID SECOND SEALING MEMBER AND PISTON FOR MOVEMENT OF SAID MOVABLE MEMBER.
Claim 2
Dependent Claim
153 words
APPARATUS FOR USE ON A SUBMERGED WELL HAVING A PIPE STRING FOR FLOW OF FLUID WHICH COMPRISES MEANS FORMING A CHAMBER ON THE UPPER END OF SAID WELL, A MOVABLE MEMBER ARRANGED IN SAID CHAMBER FOR MOVEMENT FROM A FIRST TO A SECOND POSITION AND VICE VERSA, THE UPPER END OF SAID PIPE STRING BEING ARRANGED WITHIN SAID MOVABLE MEMBER FOR MOVEMENT WITH SAID MOVABLE MEMBER AND FOR MATINGLY ENGAGING WITH THE MAJOR LENGTH OF SAID PIPE STRING, A PISTON CARRIED BY SAID MOVABLE MEMBER, A FIRST SEALING MEMBER ARRANGED ABOVE SAID PISTON FOR SEALING BETWEEN SAID MOVABLE MEMBER AND THE UPPER END OF SAID CHAMBER, A SECOND SEALING MEMBER ARRANGED BELOW SAID PISTON FOR SEALING BETWEEN SAID MOVABLE MEMBER AND THE WALL OF SAID CHAMBER, AND MEANS FOR INJECTING FLUID BETWEEN SAID FIRST SEALING MEMBER AND SAID PISTON AND BETWEEN SAID SECOND SEALING MEMBER AND PISTON FOR MOVEMENT OF SAID MOVABLE MEMBER.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |