US3335799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wellhead assembly with sealable bypass between the hanger and seat
Assignee: HUNTSINGER ASSOCIATES
•
Filing: 1964-10-07
•
Granted: 1967-08-15
•
Expires: 1984-10-07
Abstract
No abstract record available.
Inventors
- 👤 William F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:06
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; E21B43/00; E21B43/02; E21B43/10; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PIPE HANGER DEVICE COMPRISING: A TUBULAR HEAD HAVING A SEAT THEREIN, A PIPE HANGER ADAPTED TO BE LOWERED TOWARD THE TUBULAR HEAD ON A TUBULAR STRING AND INCLUDING A BASE MOVABLE IN SAID HEAD AND HAVING PORTIONS ENGAGEABLE WITH SAID SEAT, PASSAGE MEANS FOR ALLOWING FLUID FLOW BETWEEN SAID BASE AND SAID SEAT, SAID HANGER ALSO INCLUDING A SEAL SECTION ON SAID BASE DRIVABLE INTO A SEALING POSITION IN SAID HEAD FROM A POSITION AT WHICH FLUID MAY FLOW BETWEEN SAID HEAD SAID SEAL SECTION, DRIVER MEANS FOR SAID SEAL SECTION LOWERED TOWARD THE HEAD TOGETHER WITH SAID BASE BY THE TUBULAR STRING, AND MEANS FOR RELEASABLY CONNECTING SAID SEAL SECTION AND SAID DRIVER MEANS IN DRIVING RELATION TO PERMIT RELEASE OF SAID DRIVER MEANS IN SAID SEAL SECTION, AFTER SAID SEAL SECTION HAS BEEN SHIFTED TO SEALING POSITION, AND WITHDRAWAL OF SAID DRIVER MEANS FROM SAID SEAL SECTION BY THE TUBULAR STRING.
Claim 2
Dependent Claim
154 words
A PIPE HANGER DEVICE COMPRISING: A TUBULAR HEAD HAVING A SEAT THEREIN, A PIPE HANGER ADAPTED TO BE LOWERED TOWARD THE TUBULAR HEAD ON A TUBULAR STRING AND INCLUDING A BASE MOVABLE IN SAID HEAD AND HAVING PORTIONS ENGAGEABLE WITH SAID SEAT, PASSAGE MEANS FOR ALLOWING FLUID FLOW BETWEEN SAID BASE AND SAID SEAT, SAID HANGER ALSO INCLUDING A SEAL SECTION ON SAID BASE DRIVABLE INTO A SEALING POSITION IN SAID HEAD FROM A POSITION AT WHICH FLUID MAY FLOW BETWEEN SAID HEAD SAID SEAL SECTION, DRIVER MEANS FOR SAID SEAL SECTION LOWERED TOWARD THE HEAD TOGETHER WITH SAID BASE BY THE TUBULAR STRING, AND MEANS FOR RELEASABLY CONNECTING SAID SEAL SECTION AND SAID DRIVER MEANS IN DRIVING RELATION TO PERMIT RELEASE OF SAID DRIVER MEANS IN SAID SEAL SECTION, AFTER SAID SEAL SECTION HAS BEEN SHIFTED TO SEALING POSITION, AND WITHDRAWAL OF SAID DRIVER MEANS FROM SAID SEAL SECTION BY THE TUBULAR STRING.
References Cited (Backward Citations)
US3273646A
Cited
US1849374A
Cited
US1902540A
Cited
US2346060A
Cited
US2609879A
Cited
US3137348A
Cited
US3171489A
Cited
US3247914A
Cited
US3268242A
Cited
US3177703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |