US3082824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packing devices
Assignee: Lane Wells Co
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Filing: 1959-03-20
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Granted: 1963-03-26
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Expires: 1979-03-20
Abstract
No abstract record available.
Inventors
- 👤 Francis A Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN A BRIDGING PLUG HAVING IN COMBINATION A MANDREL, FIRST AND SECOND SLIPS ARRANGED ADJACENT OPPOSITE ENDS OF SAID MANDREL RESPECTIVELY, A RESILIENT PACKING BODY CIRCUMFERENTIALLY MOUNTED ON SAID MANDREL INTERMEDIATELY OF SAID SLIPS, AND FIRST AND SECOND SLIP EXPANDERS SLIDABLY MOUNTED ON SAID MANDREL INTERMEDIATELY OF SAID PACKING BODY AND SAID FIRST AND SECOND SLIPS RESPECTIVELY AND EACH FURTHER ADAPTED AND ARRANGED TO WEDGE ITS RESPECTIVE SLIP OUTWARDLY OF SAID MANDREL WHEN SUCH RESPECTIVE SLIP IS URGED TOWARD SAID PACKING BODY, THE IMPROVEMENT IN COMBINATION THEREWITH COMPRISING A FIRST SHEAR PIN ARRANGED TO SECURE SAID FIRST SLIP TO SAID FIRST EXPANDER, A SECOND SHEAR PIN ARRANGED TO SECURE SAID SECOND SLIP TO SAID SECOND EXPANDER AND HAVING A SHEAR STRENGTH GREATER THAN THAT OF SAID FIRST SHEAR PIN, AND LATCHING MEANS ARRANGED BETWEEN SAID MANDREL AND SAID SECOND EXPANDER AND ADAPTED TO OPPOSE MOVEMENT OF SAID SECOND EXPANDER SLIDABLY ALONG SAID MANDREL AND AWAY FROM SAID PACKING BODY.
Claim 2
Dependent Claim
159 words
IN A BRIDGING PLUG HAVING IN COMBINATION A MANDREL, FIRST AND SECOND SLIPS ARRANGED ADJACENT OPPOSITE ENDS OF SAID MANDREL RESPECTIVELY, A RESILIENT PACKING BODY CIRCUMFERENTIALLY MOUNTED ON SAID MANDREL INTERMEDIATELY OF SAID SLIPS, AND FIRST AND SECOND SLIP EXPANDERS SLIDABLY MOUNTED ON SAID MANDREL INTERMEDIATELY OF SAID PACKING BODY AND SAID FIRST AND SECOND SLIPS RESPECTIVELY AND EACH FURTHER ADAPTED AND ARRANGED TO WEDGE ITS RESPECTIVE SLIP OUTWARDLY OF SAID MANDREL WHEN SUCH RESPECTIVE SLIP IS URGED TOWARD SAID PACKING BODY, THE IMPROVEMENT IN COMBINATION THEREWITH COMPRISING A FIRST SHEAR PIN ARRANGED TO SECURE SAID FIRST SLIP TO SAID FIRST EXPANDER, A SECOND SHEAR PIN ARRANGED TO SECURE SAID SECOND SLIP TO SAID SECOND EXPANDER AND HAVING A SHEAR STRENGTH GREATER THAN THAT OF SAID FIRST SHEAR PIN, AND LATCHING MEANS ARRANGED BETWEEN SAID MANDREL AND SAID SECOND EXPANDER AND ADAPTED TO OPPOSE MOVEMENT OF SAID SECOND EXPANDER SLIDABLY ALONG SAID MANDREL AND AWAY FROM SAID PACKING BODY.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |