US3120272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cup-seal for well tools
Assignee: Individual
•
Filing: 1962-07-05
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Granted: 1964-02-04
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Chudleigh B Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:42
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/126; E21B33/1265; E21B33/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A CUP-SEAL FOR WELL TOOLS, COMPRISING, AN ANNULAR SEAL BODY CONSTRUCTED OF FLEXIBLE, RESILIENT MATERIAL, THE EXTERIOR SURFACE OF SAID BODY BEING CYLINDRICAL AND OF A LESSER DIAMETER THAN THE BORE OF A PIPE INTO WHICH IT IS TO BE RUN, THE BORE OF SAID BODY TAPERING INWARDLY FROM ONE END THEREOF TOWARD THE OPPOSITE END THEREOF TO THEREBY DEFINE AN ANNULAR LIP PORTION AT SAID ONE END HAVING A LESSER RADIAL THICKNESS THAN SAID OPPOSITE END, A METALLIC BACK-UP RING AFFIXED IN ABUTTING RELATION TO SAID OPPOSITE END, THE INNER AND OUTER PERIPHERIES OF SAID BACK-UP RING BEING SUBSTANTIALLY FLUSH WITH THE INNER AND OUTER PERIPHERIES OF SAID OPPOSITE END, A METALLIC LIP-SUPPORT RING AFFIXED TO THE END FACE OF SAID LIP PORTION, SAID LIP-SUPPORT RING HAVING AN INNER DIAMETER SUBSTANTIALLY FLUSH WITH THE INNER DIAMETER OF SAID LIP PORTION AND AN OUTER DIAMETER SOMEWHAT LESS THAN THE EXTERNAL DIAMETER OF SAID LIP PORTION WHEREBY TO PROVIDE AN ANNULAR END SECTION OF SAID LIP PORTION WHICH EXTENDS RADIALLY OUTWARDLY WITH RESPECT
Claim 2
Dependent Claim
172 words
A CUP-SEAL FOR WELL TOOLS, COMPRISING, AN ANNULAR SEAL BODY CONSTRUCTED OF FLEXIBLE, RESILIENT MATERIAL, THE EXTERIOR SURFACE OF SAID BODY BEING CYLINDRICAL AND OF A LESSER DIAMETER THAN THE BORE OF A PIPE INTO WHICH IT IS TO BE RUN, THE BORE OF SAID BODY TAPERING INWARDLY FROM ONE END THEREOF TOWARD THE OPPOSITE END THEREOF TO THEREBY DEFINE AN ANNULAR LIP PORTION AT SAID ONE END HAVING A LESSER RADIAL THICKNESS THAN SAID OPPOSITE END, A METALLIC BACK-UP RING AFFIXED IN ABUTTING RELATION TO SAID OPPOSITE END, THE INNER AND OUTER PERIPHERIES OF SAID BACK-UP RING BEING SUBSTANTIALLY FLUSH WITH THE INNER AND OUTER PERIPHERIES OF SAID OPPOSITE END, A METALLIC LIP-SUPPORT RING AFFIXED TO THE END FACE OF SAID LIP PORTION, SAID LIP-SUPPORT RING HAVING AN INNER DIAMETER SUBSTANTIALLY FLUSH WITH THE INNER DIAMETER OF SAID LIP PORTION AND AN OUTER DIAMETER SOMEWHAT LESS THAN THE EXTERNAL DIAMETER OF SAID LIP PORTION WHEREBY TO PROVIDE AN ANNULAR END SECTION OF SAID LIP PORTION WHICH EXTENDS RADIALLY OUTWARDLY WITH RESPECT
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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |