US3268243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wellhead assemblies
Assignee: Armco Inc
•
Filing: 1963-08-19
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Granted: 1966-08-23
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jr William W Word
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:35
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; E21B33/035; E21B2200/00; E21B2200/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN AN UNDERWATER WELLHEAD ASSEMBLY, THE COMBINATION OF WELLHEAD BODY MEANS ADAPTED FOR UPRIGHT INSTALLATION ON A SUITABLE BASE STRUCTURE AND HAVING AN UPRIGHT PASSAGE, AND TRANSVERSE UPWARDLY DIRECTED SHOULDER MEANS; CASING HANGER MEANS DISPOSED IN SAID PASSAGE AND SUPPORTED BY SAID SHOULDER MEANS, SAID HANGER MEANS FILLING SAID PASSAGE ABOVE SAID SHOULDER MEANS, SAID HANGER MEANS AND SAID BODY MEANS COOPERATING TO EFFECT SEAL AGAINST UPWARD FLOW OF FLUID AROUND SAID HANGER MEANS; MEANS CARRIED BY SAID BODY MEANS AND DEFINING AT LEAST ONE BY-PASS FLOW DUCT EXTERIOR TO SAID PASSAGE AND COMMUNICATING BETWEEN A POINT IN SAID PASSAGE BELOW SAID HANGER MEANS AND A POINT IN SAID PASSAGE ABOVE SAID HANGER MEANS; AND A LOAD-BEARING TUBULAR INTERNAL WELLHEAD MEMBER SUPPORTED IN SAID PASSAGE ABOVE SAID HANGER MEANS AND SEALED TO SAID BODY MEANS TO PREVENT FLUID FLOW THROUGH SAID BY-PASS FLOW DUCT.
Claim 2
Dependent Claim
144 words
IN AN UNDERWATER WELLHEAD ASSEMBLY, THE COMBINATION OF WELLHEAD BODY MEANS ADAPTED FOR UPRIGHT INSTALLATION ON A SUITABLE BASE STRUCTURE AND HAVING AN UPRIGHT PASSAGE, AND TRANSVERSE UPWARDLY DIRECTED SHOULDER MEANS; CASING HANGER MEANS DISPOSED IN SAID PASSAGE AND SUPPORTED BY SAID SHOULDER MEANS, SAID HANGER MEANS FILLING SAID PASSAGE ABOVE SAID SHOULDER MEANS, SAID HANGER MEANS AND SAID BODY MEANS COOPERATING TO EFFECT SEAL AGAINST UPWARD FLOW OF FLUID AROUND SAID HANGER MEANS; MEANS CARRIED BY SAID BODY MEANS AND DEFINING AT LEAST ONE BY-PASS FLOW DUCT EXTERIOR TO SAID PASSAGE AND COMMUNICATING BETWEEN A POINT IN SAID PASSAGE BELOW SAID HANGER MEANS AND A POINT IN SAID PASSAGE ABOVE SAID HANGER MEANS; AND A LOAD-BEARING TUBULAR INTERNAL WELLHEAD MEMBER SUPPORTED IN SAID PASSAGE ABOVE SAID HANGER MEANS AND SEALED TO SAID BODY MEANS TO PREVENT FLUID FLOW THROUGH SAID BY-PASS FLOW DUCT.
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |