US3221568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well pumping apparatus
Assignee: Individual
•
Filing: 1962-05-14
•
Granted: 1965-12-07
•
Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Milburn M Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/18888; Y10T74/1892; Y10T74/18928; Y10T74/18952; Y10T74/18968; Y10T74/18992; Y10T74/21; Y10T74/2142; Y10T74/2154; Y10T74/2156
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
WELL PUMP MEANS, COMPRISING, IN COMBINATION, A SAMSON POST, MEANS PIVOTALLY MOUNTED ON SAID SAMSON POST DEFINING A WALKING BEAM, MEANS ON ONE END PORTION OF SAID WALKING BEAM TO RECEIVE AND HOLD A ROPE OF THE LIKE DURING MOVEMENT OF SAID WALKING BEAM, ARM MEANS OPERATIVELY CONNECTED TO SAID WALKING BEAM AND HAVING END PORTIONS POSITIONED AT AN ANGLES RELATIVE TO EACH OTHER WITH ONE OF SAID END PORTIONS BEING LOCATED IN A GENERALLY VERTICAL POSITION, WEIGHT MEANS CARRIED BY SAID ONE OF SAID END PORTIONS OF SAID ARM MEANS, DRIVE MEANS, CONNECTING MEANS OPERATIVELY CONNECTED TO SAID DRIVE MEANS AND TO THE OTHER OF SAID END PORTIONS OF SAID ARM MEANS, SAID CONNECTING MEANS BEING CONSTRUCTED OF UPPER AND LOWER PORTIONS PIVOTALLY CONNECTED TOGETHER AND MOVABLE FROM A POSITION SUBSTANTIALLY IN LINE WITH EACH OTHER TO POSITIONS ON OPPOSITE SIDES THEREOF DURING OPERA-
References Cited (Backward Citations)
US1293608A
Cited
US1507061A
Cited
US1515099A
Cited
US1609250A
Cited
US1964670A
Cited
US2074550A
Cited
US2098290A
Cited
US2184200A
Cited
US2272579A
Cited
US2380686A
Cited
US2432735A
Cited
US2660116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |