US3199595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary control system for underwater wells
Assignee: Shell USA Inc
•
Filing: 1961-12-28
•
Granted: 1965-08-10
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Carl W Lafitte
- 👤 John A Haeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:44
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/0355; E21B19/00; E21B19/08; E21B19/09; E21B34/00; E21B34/02; E21B34/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A CONTROL SYSTEM FOR AN UNDERWATER WELL INSTALLATION, SAID SYSTEM COMPRISING (A) A HOUSING MEMBER LOWERABLE THROUGH A BODY OF WATER TO AN UNDERWATER WELL ASSEMBLY, SAID HOUSING MEMBER HAVING FIRST SEALING SURFACE MEANS THEREON, (B) A PLURALITY OF CONDUIT MEANS IN SAID HOUSING MEMBER WITH AN END OF EACH OF SAID CONDUIT MANS TERMINATING AT SAID FIRST SEALING SURFACE MEANS, (C) VALVE MEANS CARRIED BY SAID HOUSING MEMBER IN SAID CONDUIT MEANS FOR CONTROLLING THE FLOW OF FLUID THERETHROUGH, (D) A SOURCE OF PRESSURE FLUID IN COMMUNICATION WITH CONDUIT MEANS OF SAID HOUSING MEMBER,
Claim 2
Dependent Claim
95 words
A CONTROL SYSTEM FOR AN UNDERWATER WELL INSTALLATION, SAID SYSTEM COMPRISING (A) A HOUSING MEMBER LOWERABLE THROUGH A BODY OF WATER TO AN UNDERWATER WELL ASSEMBLY, SAID HOUSING MEMBER HAVING FIRST SEALING SURFACE MEANS THEREON, (B) A PLURALITY OF CONDUIT MEANS IN SAID HOUSING MEMBER WITH AN END OF EACH OF SAID CONDUIT MANS TERMINATING AT SAID FIRST SEALING SURFACE MEANS, (C) VALVE MEANS CARRIED BY SAID HOUSING MEMBER IN SAID CONDUIT MEANS FOR CONTROLLING THE FLOW OF FLUID THERETHROUGH, (D) A SOURCE OF PRESSURE FLUID IN COMMUNICATION WITH CONDUIT MEANS OF SAID HOUSING MEMBER,
References Cited (Backward Citations)
US2990851A
Cited
US3086590A
Cited
US3020956A
Cited
US3041090A
Cited
US3023012A
Cited
US3064735A
Cited
US3052299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |