Patent US3074589A successfully refreshed from Google Patents.
US3074589A
Expired / Lapsed
US
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Closure means for withstanding high pressures
Assignee: Sunoco Inc
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Filing: 1959-06-04
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Granted: 1963-01-22
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Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Preston E Chaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:05
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/01; E21B47/017; F; F16; F16J; F16J13/00; F16J13/02; F16J13/08; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN COMBINATION, A CYLINDRICAL METALLIC CASING HAVING A CENTRAL BORE FORMED BY AN ANNULAR WALL OF A THICKNESS SUFFICIENT TO WITHSTAND AN EXTERNAL FLUID PRESSURE OF A PREDETERMINED MAGNITUDE, A CYLINDRICAL METALLIC PLUG ARRANGED WITHIN SAID BORE, SAID PLUG HAVING AN ANNULAR GROOVE, AN O-RING LOCATED IN SAID GROOVE AND ENGAGING THE SURFACE OF SAID BORE AT AN AXIALLY INTERMEDIATE PORTION OF SAID ANNULAR WALL, SAID INTERMEDIATE PORTION OF SAID ANNULAR WALL HAVING A THICKNESS LESS THAN SAID FIRST RECITED THICKNESS SO AS TO BE DEFORMABLE RADIALLY INWARDLY BY SAID
Claim 2
Dependent Claim
90 words
IN COMBINATION, A CYLINDRICAL METALLIC CASING HAVING A CENTRAL BORE FORMED BY AN ANNULAR WALL OF A THICKNESS SUFFICIENT TO WITHSTAND AN EXTERNAL FLUID PRESSURE OF A PREDETERMINED MAGNITUDE, A CYLINDRICAL METALLIC PLUG ARRANGED WITHIN SAID BORE, SAID PLUG HAVING AN ANNULAR GROOVE, AN O-RING LOCATED IN SAID GROOVE AND ENGAGING THE SURFACE OF SAID BORE AT AN AXIALLY INTERMEDIATE PORTION OF SAID ANNULAR WALL, SAID INTERMEDIATE PORTION OF SAID ANNULAR WALL HAVING A THICKNESS LESS THAN SAID FIRST RECITED THICKNESS SO AS TO BE DEFORMABLE RADIALLY INWARDLY BY SAID
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |