Patent US472656A successfully refreshed from Google Patents.
Patent US3075467A successfully refreshed from Google Patents.
US3075467A
Expired / Lapsed
US
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Means for pumping liquids from gas producing wells
Assignee: AMERICAN Manufacturing CO OF TEXAS
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Filing: 1960-03-25
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Granted: 1963-01-29
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Norris W Gallaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:22
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; F; F04; F04B; F04B47/00; F04B47/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A GAS DRIVEN PUMPING UNIT FOR REMOVING LIQUIDS FROM A GAS WELL HAVING A CASING AND TUBING, SAID PUMPING UNIT INCLUDING A WALKING BEAM AND A PITMAN CONNECTED THEREWITH: AN AIR MOTOR INCLUDING A DRIVE SHAFT, MEANS COMMUNICATING THE INPUT OF SAID AIR MOTOR WITH THE CASING OF A GAS WELL, MEANS COMMUNICATING THE EXHAUST OF SAID AIR MOTOR WITH THE DELIVERY SYSTEM OF A PIPE LINE, A CENTRIFUGAL CLUTCH ON SAID DRIVE SHAFT, A DRIVE MEMBER ENGAGING SAID CENTRIFUGAL CLUTCH, A SPEED REDUCER INCLUDING A HIGH SPEED SHAFT AND A LOW SPEED SHAFT, MEANS OPERATIVELY CONNECTING SAID DRIVE MEMBER TO SAID HIGH SPEED
Claim 2
Dependent Claim
104 words
A GAS DRIVEN PUMPING UNIT FOR REMOVING LIQUIDS FROM A GAS WELL HAVING A CASING AND TUBING, SAID PUMPING UNIT INCLUDING A WALKING BEAM AND A PITMAN CONNECTED THEREWITH: AN AIR MOTOR INCLUDING A DRIVE SHAFT, MEANS COMMUNICATING THE INPUT OF SAID AIR MOTOR WITH THE CASING OF A GAS WELL, MEANS COMMUNICATING THE EXHAUST OF SAID AIR MOTOR WITH THE DELIVERY SYSTEM OF A PIPE LINE, A CENTRIFUGAL CLUTCH ON SAID DRIVE SHAFT, A DRIVE MEMBER ENGAGING SAID CENTRIFUGAL CLUTCH, A SPEED REDUCER INCLUDING A HIGH SPEED SHAFT AND A LOW SPEED SHAFT, MEANS OPERATIVELY CONNECTING SAID DRIVE MEMBER TO SAID HIGH SPEED
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |