US3146724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps with pulsation damper
Assignee: Armco Inc
•
Filing: 1961-11-20
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Granted: 1964-09-01
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 David J Cornelsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:56
CPC Classifications
F; F04; F04B; F04B11/00; F04B11/0008; F04B11/0016; F04B53/00; F16; F16L; F16L55/00; F16L55/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A HEAVY DUTY, MULTIPLEX, RECIPROCATORY PUMP OF THE TYPE USED IN OIL FIELDS TO PUMP LARGE QUANTITIES OF LIQUID DOWN A WELL, THE COMBINATION OF A CYLINDER BLOCK HAVING A PLURALITY OF PARALLEL HORIZONTAL BORES AND A PLURALITY OF PARALLEL VERTICAL BORES EACH INTERSECTING A DIFFERENT ONE OF SAID HORIZONTAL BORES AND DEFINING A PLURALITY OF INLET PORTS AND A PLURALITY OF OUTLET PORTS A VALVE OPERATIVELY ASSOCIATED WITH EACH OF SAID PORTS FOR CONTROLLING THE FLOW OF LIQUID THERETHROUGH; A PLUNGER DISPOSED IN EACH OF SAID HORIZONTAL BORES FOR PUMPING LIQUID THROUGH SAID PORTS, SAID PLUNGER BEING RECIPROCABLE OUT OF PHASE SO THAT THE INTAKE STROKES OF SAID PLUNGERS OCCUR IN SUCCESSION; AN ELONGATED INTAKE MANIFOLD INTEGRAL WITH SAID CYLINDER BLOCK, SAID INLET PORTS ALL COMMUNICATING WITH THE INTERIOR OF SAID MANIFOLD VIA SAID VERTICAL BORES, SAID MANIFOLD HAVING AN OPENING DISPOSED OPPOSITE SAID VERTICAL BORES AND CENTERED GENERALLY WITH RESPECT THERETO,
Claim 2
Dependent Claim
154 words
IN A HEAVY DUTY, MULTIPLEX, RECIPROCATORY PUMP OF THE TYPE USED IN OIL FIELDS TO PUMP LARGE QUANTITIES OF LIQUID DOWN A WELL, THE COMBINATION OF A CYLINDER BLOCK HAVING A PLURALITY OF PARALLEL HORIZONTAL BORES AND A PLURALITY OF PARALLEL VERTICAL BORES EACH INTERSECTING A DIFFERENT ONE OF SAID HORIZONTAL BORES AND DEFINING A PLURALITY OF INLET PORTS AND A PLURALITY OF OUTLET PORTS A VALVE OPERATIVELY ASSOCIATED WITH EACH OF SAID PORTS FOR CONTROLLING THE FLOW OF LIQUID THERETHROUGH; A PLUNGER DISPOSED IN EACH OF SAID HORIZONTAL BORES FOR PUMPING LIQUID THROUGH SAID PORTS, SAID PLUNGER BEING RECIPROCABLE OUT OF PHASE SO THAT THE INTAKE STROKES OF SAID PLUNGERS OCCUR IN SUCCESSION; AN ELONGATED INTAKE MANIFOLD INTEGRAL WITH SAID CYLINDER BLOCK, SAID INLET PORTS ALL COMMUNICATING WITH THE INTERIOR OF SAID MANIFOLD VIA SAID VERTICAL BORES, SAID MANIFOLD HAVING AN OPENING DISPOSED OPPOSITE SAID VERTICAL BORES AND CENTERED GENERALLY WITH RESPECT THERETO,
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |