US3330211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual pump apparatus
Assignee: Flintkote Co
•
Filing: 1964-08-12
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Granted: 1967-07-11
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Expires: 1984-08-12
Abstract
No abstract record available.
Inventors
- 👤 Faro Charles
- 👤 James H Cantrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/80; B01F35/88; B01F35/882; B01F35/8822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A DEVICE FOR SIMULTANEOUS PUMPING OF TWO LIQUIDS, THE COMBINATION OF A FRAME, A FIRST PUMP INCLUDING A CYLINDER AND A PISTON MOUNTED FOR RECIPROCATION THEREIN, A SECOND PUMP INCLUDING A CYLINDER AND A PISTON MOUNTED FOR RECIPROCATION THEREIN, MEANS FIXING THE CYLINDER OF EACH PUMP RELATIVE TO SAID FRAME, A CROSSHEAD GUIDED ON SAID FRAME FOR RECIPROCATION, MEANS CONNECTING SAID CROSSHEAD TO DRIVE THE PISTON OF EACH PUMP, SAID MEANS INCLUDING A LOST-MOTION CONNECTION BETWEEN THE CROSSHEAD AND EACH OF SAID PISTONS, RESPECTIVELY, AND POWER MEANS ON THE FRAME TO RECIPROCATE SAID CROSSHEAD.
Claim 2
Dependent Claim
95 words
IN A DEVICE FOR SIMULTANEOUS PUMPING OF TWO LIQUIDS, THE COMBINATION OF A FRAME, A FIRST PUMP INCLUDING A CYLINDER AND A PISTON MOUNTED FOR RECIPROCATION THEREIN, A SECOND PUMP INCLUDING A CYLINDER AND A PISTON MOUNTED FOR RECIPROCATION THEREIN, MEANS FIXING THE CYLINDER OF EACH PUMP RELATIVE TO SAID FRAME, A CROSSHEAD GUIDED ON SAID FRAME FOR RECIPROCATION, MEANS CONNECTING SAID CROSSHEAD TO DRIVE THE PISTON OF EACH PUMP, SAID MEANS INCLUDING A LOST-MOTION CONNECTION BETWEEN THE CROSSHEAD AND EACH OF SAID PISTONS, RESPECTIVELY, AND POWER MEANS ON THE FRAME TO RECIPROCATE SAID CROSSHEAD.
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |