US3606872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection system for externally ignited internal combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1970-07-09
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Granted: 1971-09-21
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Expires: 1990-07-09
Abstract
Abstract IN A FUEL INJECTION SYSTEM, THE FUEL ADMITTED TO THE FUEL INJECTION VALVE IS METERED BY A PLUNGER ANGULARLY DISPLACEABLE BY A THROTTLE MEMBER RESPONSIVE TO THE AIR PRESSURE IN THE SUCTION TUBE. PRIOR TO THE INJECTION OF FUEL BY THE INJECTION VALVE INTO THE SUCTION TUBE, THE FUEL IS PREMIXED IN SAID INJECTION VALVE BY AIR TAKEN FROM THE SUCTION TUBE DOWNSTREAM OF SAID THROTTLE MEMBER AND UPSTREAM OF AN ARBITRARILY OPERABLE BUTTERFLY VALVE.
Inventors
- 👤 Konrad Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/16; F02M69/26; F02M69/04; F02M69/047; F02M69/18; F02M69/22; F02M69/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |