Patent US3229639A successfully refreshed from Google Patents.
US3229639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump control system
Assignee: Individual
•
Filing: 1962-04-02
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Granted: 1966-01-18
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Frank A Hignutt
- 👤 Kenneth W Hignutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:07
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066; G05D16/2073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A FLUID DISTRIBUTION SYSTEM HAVING A PLURALITY OF MEANS FOR PUMPING SAID FLUID AND MEANS CONNECTED BETWEEN THE DISCHARGE SIDE OF EACH OF SAID PLURALITY OF PUMPING MEANS AND SAID DISTRIBUTION SYSTEM FOR VARYING THE FLOW THROUGH EACH OF SAID PLURALITY OF PUMPING MEANS IN ORDER TO MAINTAIN SAID DISTRIBUTION SYSTEM AT A PREDETERMINED PRESSURE LEVEL, THE COMBINATION COMPRISING MEANS FOR SENSING PRESSURE IN SAID DISTRIBUTION SYSTEM, MEANS FOR SENSING THE DISCHARGE PRESSURE EACH OF SAID PLURALITY OF PUMPING MEANS UPSTREAM OF SAID FLOW VARYING MEANS RELATED THERETO, MEANS FOR PRIMING EACH OF SAID PLURALITY OF PUMPING MEANS, MEANS FOR ENERGIZING AND DEENERGIZING EACH OF SAID PUMPING MEANS, AND MEANS FOR ACTIVATING SAID PRIMING MEANS AND SAID ENERGIZING
Claim 2
Dependent Claim
119 words
IN A FLUID DISTRIBUTION SYSTEM HAVING A PLURALITY OF MEANS FOR PUMPING SAID FLUID AND MEANS CONNECTED BETWEEN THE DISCHARGE SIDE OF EACH OF SAID PLURALITY OF PUMPING MEANS AND SAID DISTRIBUTION SYSTEM FOR VARYING THE FLOW THROUGH EACH OF SAID PLURALITY OF PUMPING MEANS IN ORDER TO MAINTAIN SAID DISTRIBUTION SYSTEM AT A PREDETERMINED PRESSURE LEVEL, THE COMBINATION COMPRISING MEANS FOR SENSING PRESSURE IN SAID DISTRIBUTION SYSTEM, MEANS FOR SENSING THE DISCHARGE PRESSURE EACH OF SAID PLURALITY OF PUMPING MEANS UPSTREAM OF SAID FLOW VARYING MEANS RELATED THERETO, MEANS FOR PRIMING EACH OF SAID PLURALITY OF PUMPING MEANS, MEANS FOR ENERGIZING AND DEENERGIZING EACH OF SAID PUMPING MEANS, AND MEANS FOR ACTIVATING SAID PRIMING MEANS AND SAID ENERGIZING
References Cited (Backward Citations)
US1964034A
Cited
US1982578A
Cited
US2057570A
Cited
US2486256A
Cited
US2803192A
Cited
US2871419A
Cited
US3060858A
Cited
US2889495A
Cited
US3005411A
Cited
US2945445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |