Patent US5198928A successfully refreshed from Google Patents.
Patent US2753941A successfully refreshed from Google Patents.
US2753941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer and tubing hanger therefor
Assignee: Phillips Petroleum Co
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Filing: 1953-03-06
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Granted: 1956-07-10
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Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
- 👤 Glen G Hebard
- 👤 Elburt S Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B23/00; E21B23/06; E21B33/00; E21B33/10; E21B33/12; E21B33/1204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
A TOOL ADAPTED TO BE SET IN A PIPE COMPRISING IN COMBINATION A REMOVABLE BODY, A FIRST TUBULAR MEMBER SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND EXTENDING BELOW THE SAME, SAID FIRST TUBULAR MEMBER BEING SECURED TO SAID BODY BY A FIRST FRANGIBLE CONNECTION, SAID FIRST CONNECTION BEING DESIGNED TO PART AT A FIRST PREDETERMINED FORCE, A FIRST PLURALITY OF SLIPS SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND MOVABLY MOUNTED ON SAID FIRST MEMBER, A FIRST TUBULAR WEDGE MEMBER SURROUNDING AND SLDEABLY MOUNTED ON SAID BODY AND SECURED TO SAID FIRST PLURALITY OF SLIPS BY A SECOND FRANGIBLE CONNECTION SAID SECOND CONNECTION BEING DESIGNED TO PART AT A SECOND PREDETERMINED FORCE LESS THAN SAID FIRST FORCE, A RIGID TUBE SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, A SECOND TUBULAR WEDGE MEMBER SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, RECESSES IN SAID FIRST AND SECOND WEDGE MEMBERS SLIDEABLY RECEIVING SAID RIGID TUBE IN TELESCOPIC RELATIONSHIP, A RESILIENT TUBE SURROUNDING SAID RIGID TUBE BETWEEN SAID WEDGE MEMBERS, A SECOND PLURALITY OF SLIPS SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, A THIRD FRANGIBLE CONNECTION SECURING SAID SECOND PLURALITY OF SLIPS TO SAID SECOND WEDGE MEMBER, SAID THIRD FRANGIBLE CONNECTION BEING DESIGNED TO PART AT A THIRD PREDETERMINED FORCE LESS THAN SAID FIRST FORCE, A SECOND TUBULAR MEMBER SUPPORTED ON SAID SECOND PLURALITY OF SLIPS AND SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND SECURED THERE-
Claim 2
Dependent Claim
234 words
A TOOL ADAPTED TO BE SET IN A PIPE COMPRISING IN COMBINATION A REMOVABLE BODY, A FIRST TUBULAR MEMBER SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND EXTENDING BELOW THE SAME, SAID FIRST TUBULAR MEMBER BEING SECURED TO SAID BODY BY A FIRST FRANGIBLE CONNECTION, SAID FIRST CONNECTION BEING DESIGNED TO PART AT A FIRST PREDETERMINED FORCE, A FIRST PLURALITY OF SLIPS SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND MOVABLY MOUNTED ON SAID FIRST MEMBER, A FIRST TUBULAR WEDGE MEMBER SURROUNDING AND SLDEABLY MOUNTED ON SAID BODY AND SECURED TO SAID FIRST PLURALITY OF SLIPS BY A SECOND FRANGIBLE CONNECTION SAID SECOND CONNECTION BEING DESIGNED TO PART AT A SECOND PREDETERMINED FORCE LESS THAN SAID FIRST FORCE, A RIGID TUBE SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, A SECOND TUBULAR WEDGE MEMBER SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, RECESSES IN SAID FIRST AND SECOND WEDGE MEMBERS SLIDEABLY RECEIVING SAID RIGID TUBE IN TELESCOPIC RELATIONSHIP, A RESILIENT TUBE SURROUNDING SAID RIGID TUBE BETWEEN SAID WEDGE MEMBERS, A SECOND PLURALITY OF SLIPS SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY, A THIRD FRANGIBLE CONNECTION SECURING SAID SECOND PLURALITY OF SLIPS TO SAID SECOND WEDGE MEMBER, SAID THIRD FRANGIBLE CONNECTION BEING DESIGNED TO PART AT A THIRD PREDETERMINED FORCE LESS THAN SAID FIRST FORCE, A SECOND TUBULAR MEMBER SUPPORTED ON SAID SECOND PLURALITY OF SLIPS AND SURROUNDING AND SLIDEABLY MOUNTED ON SAID BODY AND SECURED THERE-
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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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |