US3203410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controlled fuel injection system
Assignee: Robert Bosch GmbH
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Filing: 1964-09-28
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Granted: 1965-08-31
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Scholl Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:58
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/06; F02D41/061; F02D41/30; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0664; F02M51/0671; F02M51/0682; F02M51/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, INCORPORATED ELECTROMAGNETICALLY ACTUATED INJECTOR MEANS, A MONOSTABLE FLIP-FLOP HAVING AN INPUT TRANSISTOR AND AN OUTPUT TRANSISTOR FOR PRODUCING PULSE-SHAPED SUPPLY CURRENT FOR THE INJECTOR MEANS, WHICH FLIP-FLOP FURTHER HAS A TIME MEMBER THAT INCLUDES A TRANSFORMER WHOSE PRIMARY WINDING IS CONNECTED TO THE COLLECTOR CIRCUIT OF THE OUTPUT TRANSISTOR AND WHOSE SECONDARY WINDING IS CONNECTED TO THE BASE CIRCUIT OF THE INPUT TRANSISTOR, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION: AN INPUT RESISTOR CONNECTED IN SERIES WITH SAID PRIMARY WINDING OF SAID TRANSFORMER; A RECTIFIER HAVING ONE TERMINAL CONNECTED TO THE JUNCTURE OF SAID INPUT RESISTOR AND SAID PRIMARY WINDING; AND TWO SERIALLY-CONNECTED RESISTORS FORMING A VOLTAGE DIVIDER, AT LEAST ONE OF SAID TWO LAST-MENTIONED RESISTORS BEING A VARIABLE ONE WHOSE RESISTANCE VARIES AS A FUNCTION OF AN OPERATING CONDITION OF SAID ENGINE, THE OTHER TERMINAL OF SAID RECTIFIER BEING CONNECTED TO THE JUNCTURE OF SAID TWO SERIALLY-CONNECTED RESISTORS.
Claim 2
Dependent Claim
158 words
IN A FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, INCORPORATED ELECTROMAGNETICALLY ACTUATED INJECTOR MEANS, A MONOSTABLE FLIP-FLOP HAVING AN INPUT TRANSISTOR AND AN OUTPUT TRANSISTOR FOR PRODUCING PULSE-SHAPED SUPPLY CURRENT FOR THE INJECTOR MEANS, WHICH FLIP-FLOP FURTHER HAS A TIME MEMBER THAT INCLUDES A TRANSFORMER WHOSE PRIMARY WINDING IS CONNECTED TO THE COLLECTOR CIRCUIT OF THE OUTPUT TRANSISTOR AND WHOSE SECONDARY WINDING IS CONNECTED TO THE BASE CIRCUIT OF THE INPUT TRANSISTOR, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION: AN INPUT RESISTOR CONNECTED IN SERIES WITH SAID PRIMARY WINDING OF SAID TRANSFORMER; A RECTIFIER HAVING ONE TERMINAL CONNECTED TO THE JUNCTURE OF SAID INPUT RESISTOR AND SAID PRIMARY WINDING; AND TWO SERIALLY-CONNECTED RESISTORS FORMING A VOLTAGE DIVIDER, AT LEAST ONE OF SAID TWO LAST-MENTIONED RESISTORS BEING A VARIABLE ONE WHOSE RESISTANCE VARIES AS A FUNCTION OF AN OPERATING CONDITION OF SAID ENGINE, THE OTHER TERMINAL OF SAID RECTIFIER BEING CONNECTED TO THE JUNCTURE OF SAID TWO SERIALLY-CONNECTED RESISTORS.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |