Patent US3335800A successfully refreshed from Google Patents.
US3335800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable parallel string well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1965-03-08
•
Granted: 1967-08-15
•
Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 William D Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:59
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE: FIRST AND SECOND GENERALLY PARALLEL TUBULAR BODY MEMBERS; NORMALLY RETRACTED MEANS ON SAID MEMBERS AND EXPANDABLE LATERALLY OUTWARDLY INTO ENGAGEMENT WITH THE WALL OF THE WELL BORE; FIRST MEANS ON SAID FIRST MEMBER ENGAGING THE UPPER PORTION OF SAID NORMALLY RETRACTED MEANS; SECOND MEANS ON SAID SECOND MEMBER ENGAGING THE LOWER PORTION OF SAID NORMALLY RETRACTED MEANS, SAID SECOND MEMBER BEING SLIDABLE UPWARDLY THROUGH SAID FIRST MEANS WHEREBY UPWARD MOVEMENT OF SAID SECOND MEMBER RELATIVE TO SAID FIRST MEMBER SHIFTS SAID SECOND MEANS TOWARD SAID FIRST MEANS TO EXPAND SAID NORMALLY RETRACTED MEANS LATERALLY OUTWARDLY; AND MEANS ON SAID SECOND MEMBER ENGAGEABLE WITH SAID FIRST MEANS TO TRANSMIT DOWNWARD MOVEMENT OF SAID SECOND MEMBER TO SAID NORMALLY RETRACTED MEANS TO HOLD SAID NORMALLY RETRACTED MEANS EXPANDED LATERALLY OUTWARDLY.
Claim 2
Dependent Claim
140 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE: FIRST AND SECOND GENERALLY PARALLEL TUBULAR BODY MEMBERS; NORMALLY RETRACTED MEANS ON SAID MEMBERS AND EXPANDABLE LATERALLY OUTWARDLY INTO ENGAGEMENT WITH THE WALL OF THE WELL BORE; FIRST MEANS ON SAID FIRST MEMBER ENGAGING THE UPPER PORTION OF SAID NORMALLY RETRACTED MEANS; SECOND MEANS ON SAID SECOND MEMBER ENGAGING THE LOWER PORTION OF SAID NORMALLY RETRACTED MEANS, SAID SECOND MEMBER BEING SLIDABLE UPWARDLY THROUGH SAID FIRST MEANS WHEREBY UPWARD MOVEMENT OF SAID SECOND MEMBER RELATIVE TO SAID FIRST MEMBER SHIFTS SAID SECOND MEANS TOWARD SAID FIRST MEANS TO EXPAND SAID NORMALLY RETRACTED MEANS LATERALLY OUTWARDLY; AND MEANS ON SAID SECOND MEMBER ENGAGEABLE WITH SAID FIRST MEANS TO TRANSMIT DOWNWARD MOVEMENT OF SAID SECOND MEMBER TO SAID NORMALLY RETRACTED MEANS TO HOLD SAID NORMALLY RETRACTED MEANS EXPANDED LATERALLY OUTWARDLY.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |