US2796937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing leaks in wells
Assignee: Mcgaffey-Taylor Corp
•
Filing: 1950-03-09
•
Granted: 1957-06-25
•
Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Marcus W Haines
- 👤 Claude C Taylor
- 👤 Richard A Werts
- 👤 Ford Stuart Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:55
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
APPARATUS FOR SEALING LEAKS OR OPENINGS IN THE WALLS AND JOINTS OF THE CASINGS OF OIL WELLS AND THE LIKE WITH THICK, VISCOUS, NON-MIGRANT, SEMI-SOLID, PLASTIC MATERIAL WHICH COMPRISES A CONTAINER FOR A CHARGE OF THE PLASTIC MATERIAL, A PISTON FOR EJECTING THE MATERIAL FROM SAID CONTAINER, MEANS SLIDABLY ATTACHED TO SAID CONTAINER CARRYING CASING ENGAGING MEANS FOR RELEASABLY ENGAGING THE WELL CASING A PAIR OF SPACED PACKERS ENGAGING THE WELL CASING, MEANS CONNECTED WITH SAID CONTAINER SUPPORTING SAID PACKERS WITH ONE PACKER BEING MOUNTED ON SAID SLIDABLE MEANS AND SAID SLIDABLE MEANS BEING MOVABLE
Claim 2
Dependent Claim
95 words
APPARATUS FOR SEALING LEAKS OR OPENINGS IN THE WALLS AND JOINTS OF THE CASINGS OF OIL WELLS AND THE LIKE WITH THICK, VISCOUS, NON-MIGRANT, SEMI-SOLID, PLASTIC MATERIAL WHICH COMPRISES A CONTAINER FOR A CHARGE OF THE PLASTIC MATERIAL, A PISTON FOR EJECTING THE MATERIAL FROM SAID CONTAINER, MEANS SLIDABLY ATTACHED TO SAID CONTAINER CARRYING CASING ENGAGING MEANS FOR RELEASABLY ENGAGING THE WELL CASING A PAIR OF SPACED PACKERS ENGAGING THE WELL CASING, MEANS CONNECTED WITH SAID CONTAINER SUPPORTING SAID PACKERS WITH ONE PACKER BEING MOUNTED ON SAID SLIDABLE MEANS AND SAID SLIDABLE MEANS BEING MOVABLE
References Cited (Backward Citations)
US1828100A
Cited
US2134320A
Cited
US2016919A
Cited
US2064336A
Cited
US2221204A
Cited
US2274940A
Cited
US2431751A
Cited
US2387002A
Cited
US2575603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |