US3250219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Controls Company of America
•
Filing: 1964-05-11
•
Granted: 1966-05-10
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Lourdes V Mccarty
- 👤 Robert J Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
F; F04; F04B; F04B17/00; F04B17/03; F04B17/04; F04B17/046; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F04B53/00; F04B53/10; F04B53/1037; F04B53/1047; F04B53/106; F04B53/1067; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; F16K15/1471; F16K15/148; F02M2037/085; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7881; Y10T137/7882; Y10T137/7885; Y10T137/7888; Y10T137/789
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A FUEL PUMP INCLUDING A COIL, A CONDUIT THROUGH THE COIL, A HOLLOW MAGNETIC PLUNGER AWAY FROM THE MAGNETIC CENTER SPRING BIASING THE PLUNGER AWAY FROM THE MAGNETIC CENTER OF THE COIL, THE PLUNGER BEING MOVABLE TOWARDS SAID CENTER WHEN THE COIL IS ENERGIZED, A CHECK VALVE BOTH IN THE PLUNGER AND IN THE CONDUIT, THE CHECK VALVES COOPERATING TO LIMIT THE STORKE OF THE PLUNGER IN ACCORDANCE WITH THE OUTPUT CONDITIONS OF THE PUMP, AND A POWER SUPPLY PROVIDING A PULSED D.C. VOLTAGE TO THE COIL; AND A TRANSISTOR IN THE POWER SUPPLY AND LOCATED IN THE FUEL PATH THROUGH THE PUMP.
Claim 2
Dependent Claim
103 words
A FUEL PUMP INCLUDING A COIL, A CONDUIT THROUGH THE COIL, A HOLLOW MAGNETIC PLUNGER AWAY FROM THE MAGNETIC CENTER SPRING BIASING THE PLUNGER AWAY FROM THE MAGNETIC CENTER OF THE COIL, THE PLUNGER BEING MOVABLE TOWARDS SAID CENTER WHEN THE COIL IS ENERGIZED, A CHECK VALVE BOTH IN THE PLUNGER AND IN THE CONDUIT, THE CHECK VALVES COOPERATING TO LIMIT THE STORKE OF THE PLUNGER IN ACCORDANCE WITH THE OUTPUT CONDITIONS OF THE PUMP, AND A POWER SUPPLY PROVIDING A PULSED D.C. VOLTAGE TO THE COIL; AND A TRANSISTOR IN THE POWER SUPPLY AND LOCATED IN THE FUEL PATH THROUGH THE PUMP.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |