US3314219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling mud degassers for oil wells
Assignee: Bass Brothers Enterprises Inc
•
Filing: 1965-03-10
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Granted: 1967-04-18
•
Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Iii Phil H Griffin
- 👤 Jr John W Melton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A MUD DEGASSER APPARATUS, THE COMBINATION OF A MUD DEGASSER VACUUM TANK HAVING A MUD INLET AND A MUD OUTLET, MEANS FOR MAINTAINING SUB-ATMOSPHERIC PRESSURE WITHIN SAID TANK, MEANS FOR CONTROLLING THE FLOW OF MUD INTO THE DEGASSER TANK AND FOR CONTROLLING THE DEGREE OF VACUUM WITHIN THE TANK IN ACCORDANCE WITH THE MUD LEVEL WITHIN THE TANK, MECHANICAL PUMP MEANS CONNECTED TO SAID MUD OUTLET FOR EFFECTING FLOW OF MUD THROUGH THE TANK, AND MEANS RESPONSIVE TO LOWERING OF MUD LEVEL
Claim 2
Dependent Claim
83 words
IN A MUD DEGASSER APPARATUS, THE COMBINATION OF A MUD DEGASSER VACUUM TANK HAVING A MUD INLET AND A MUD OUTLET, MEANS FOR MAINTAINING SUB-ATMOSPHERIC PRESSURE WITHIN SAID TANK, MEANS FOR CONTROLLING THE FLOW OF MUD INTO THE DEGASSER TANK AND FOR CONTROLLING THE DEGREE OF VACUUM WITHIN THE TANK IN ACCORDANCE WITH THE MUD LEVEL WITHIN THE TANK, MECHANICAL PUMP MEANS CONNECTED TO SAID MUD OUTLET FOR EFFECTING FLOW OF MUD THROUGH THE TANK, AND MEANS RESPONSIVE TO LOWERING OF MUD LEVEL
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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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |