US3288472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal seal
Assignee: Hughes Tool Co
•
Filing: 1963-07-01
•
Granted: 1966-11-29
•
Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Bruce J Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A METAL SEAL ASSEMBLY ASSEMBLED WITHIN A CASING RECESS TO EFFECT A FLUID TIGHT SEAL BETWEEN A CASING AND A MANDREL UPON RUNNING OF THE CASING OVER THE MANDREL WITHOUT THE APPLICATION OF ADDITIONAL EXTERNAL OR INTERNAL SEALING PRESSURES WHICH IS RESISTANT TO DETERIORATION IN SUBSEA APPLICATIONS, SAID METAL SEAL ASSEMBLY COMPRISING: ANNULAR METAL SEALING MEANS FOR MOUNTING WITHIN SAID CASING RECESS, SAID SEALING MEANS HAVING SPACED DIVERGENT CHANNEL WALLS INTERCONNECTED BY A BIGHT PORTION TO DEFINE AN ANNULAR CHANNEL THEREIN; ANNULAR METAL SPACER MEANS RECEIVED IN SAID SEALING MEANS ANNULAR CHANNEL HAVING A HEIGHT GREATER THAN SAID CHANNEL FOR LIMITING MOVEMENT OF SAID SEALING MEANS WITHIN SAID CASING RECESS WHEN SAID CASING IS RUN OVER A MANDREL AND FOR SPACING FREE ENDS OF SAID DIVERGENT WALLS FROM OVERHEAD PORTIONS OF THE CASING RECESS OVERLYING SAID FREE ENDS THE COMBINED AXIAL HEIGHT OF SAID SEALING MEANS AND SPACER MEANS RECEIVED THEREIN BEING LESS THAN THE AXIAL HEIGHT OF SAID RECESS; AND ANNULAR METAL RETAINER MEANS FOR MOUNTING WITHIN SAID CASING ADJACENT SAID RECESS TO RETAIN SAID SEALING MEANS AND SPACER MEANS WITHIN SAID CASING WHEN SAID CASING IS MOVED RELATIVE TO SAID MANDREL.
Claim 2
Dependent Claim
193 words
A METAL SEAL ASSEMBLY ASSEMBLED WITHIN A CASING RECESS TO EFFECT A FLUID TIGHT SEAL BETWEEN A CASING AND A MANDREL UPON RUNNING OF THE CASING OVER THE MANDREL WITHOUT THE APPLICATION OF ADDITIONAL EXTERNAL OR INTERNAL SEALING PRESSURES WHICH IS RESISTANT TO DETERIORATION IN SUBSEA APPLICATIONS, SAID METAL SEAL ASSEMBLY COMPRISING: ANNULAR METAL SEALING MEANS FOR MOUNTING WITHIN SAID CASING RECESS, SAID SEALING MEANS HAVING SPACED DIVERGENT CHANNEL WALLS INTERCONNECTED BY A BIGHT PORTION TO DEFINE AN ANNULAR CHANNEL THEREIN; ANNULAR METAL SPACER MEANS RECEIVED IN SAID SEALING MEANS ANNULAR CHANNEL HAVING A HEIGHT GREATER THAN SAID CHANNEL FOR LIMITING MOVEMENT OF SAID SEALING MEANS WITHIN SAID CASING RECESS WHEN SAID CASING IS RUN OVER A MANDREL AND FOR SPACING FREE ENDS OF SAID DIVERGENT WALLS FROM OVERHEAD PORTIONS OF THE CASING RECESS OVERLYING SAID FREE ENDS THE COMBINED AXIAL HEIGHT OF SAID SEALING MEANS AND SPACER MEANS RECEIVED THEREIN BEING LESS THAN THE AXIAL HEIGHT OF SAID RECESS; AND ANNULAR METAL RETAINER MEANS FOR MOUNTING WITHIN SAID CASING ADJACENT SAID RECESS TO RETAIN SAID SEALING MEANS AND SPACER MEANS WITHIN SAID CASING WHEN SAID CASING IS MOVED RELATIVE TO SAID MANDREL.
References Cited (Backward Citations)
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US2913269A
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US3047300A
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |