US3072145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device
Assignee: Koehring Co
•
Filing: 1958-04-30
•
Granted: 1963-01-08
•
Expires: 1978-04-30
Abstract
No abstract record available.
Inventors
- 👤 Wayne F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/10; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1669; Y10T137/1677; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7879; Y10T137/788; Y10T137/7882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A FLOW CONTROL DEVICE FOR CONTROLLING ADMISSION OF FLUID INTO A WELL CASING BEING RUN IN A WELL COMPRISING, A BODY HAVING A FLOW-WAY THERETHROUGH AND ADAPTED TO BE MADE UP IN A STRING OF CASING, A RESILIENT VALVE MEMBER EXTENDING ACROSS THE FLOW-WAY AND HAVING A SLIT THERETHROUGH TO CONTROL FLOW THROUGH THE DEVICE, SAID VALVE MEMBER HAVING A FIRST SECTION ANCHORING THE MEMBER IN THE FLOW-WAY AND A SECOND SECTION SPACED AXIALLY OF THE FLOW-WAY FROM THE FIRST SECTION AND HAVING A SLIDING SEAL WITH THE WALL OF THE FLOW-WAY, AND AN ANNULAR PRESSURE CHAMBER IN THE VALVE MEMBER BETWEEN THE FIRST AND SECOND SECTIONS DEFINED IN PART BY THE WALL OF THE FLOW-WAY TO
Claim 2
Dependent Claim
117 words
A FLOW CONTROL DEVICE FOR CONTROLLING ADMISSION OF FLUID INTO A WELL CASING BEING RUN IN A WELL COMPRISING, A BODY HAVING A FLOW-WAY THERETHROUGH AND ADAPTED TO BE MADE UP IN A STRING OF CASING, A RESILIENT VALVE MEMBER EXTENDING ACROSS THE FLOW-WAY AND HAVING A SLIT THERETHROUGH TO CONTROL FLOW THROUGH THE DEVICE, SAID VALVE MEMBER HAVING A FIRST SECTION ANCHORING THE MEMBER IN THE FLOW-WAY AND A SECOND SECTION SPACED AXIALLY OF THE FLOW-WAY FROM THE FIRST SECTION AND HAVING A SLIDING SEAL WITH THE WALL OF THE FLOW-WAY, AND AN ANNULAR PRESSURE CHAMBER IN THE VALVE MEMBER BETWEEN THE FIRST AND SECOND SECTIONS DEFINED IN PART BY THE WALL OF THE FLOW-WAY TO
References Cited (Backward Citations)
US1428399A
Cited
US996588A
Cited
US2322631A
Cited
US2382427A
Cited
US2598002A
Cited
US2674262A
Cited
US2724442A
Cited
US2894530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |