US3289077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel engine tachometer
Assignee: YACHT HAVEN MARINA
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Filing: 1963-07-12
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Granted: 1966-11-29
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Sidney S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:55
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A DIESEL ENGINE HAVING A FUEL INJECTOR, A TRANSDUCER MOUNTED ON SAID FUEL INJECTOR SO AS TO GENERATE AN ELECTRICAL SIGNAL RESPONSIVE TO EACH VIBRATION OF THE INJECTOR PRODUCED BY THE OPENING THEREOF, A SOURCE OF CURRENT, A RELAY, A PAIR OF OUTPUT TERMINALS, SAID RELAY, WHEN DEENERGIZED COMPLETING A CIRCUIT BETWEEN THE SOURCE AND THE OUTPUT TERMINALS, A GATED DIODE HAVING A GATE ELECTRODE, MEANS CONNECTING SAID GATED DIODE AND RELAY IN A SERIES CIRCUIT TO SAID SOURCE OF CURRENT, CIRCUIT MEANS CONNECTING SAID TRANSDUCER TO SAID GATE ELECTRODE TO TRIGGER SAID DIODE RESPONSIVE TO EACH OF SAID ELECTRICAL SIGNALS, WHEREBY TO ENERGIZE SAID RELAY, MEANS TO SHORT CIRCUIT SAID SERIES CIRCUIT RESPONSIVE TO ENERGIZATION OF THE RELAY, WHEREBY TO CUT OFF THE GATED DIODE, AND DEENERGIZE THE RELAY, AND MEANS CONNECTED TO THE OUTPUT TERMINALS TO COUNT AND INDICATE THE FREQUENCY OF SAID ELECTRICAL SIGNAL PULSES.
Claim 2
Dependent Claim
149 words
IN A DIESEL ENGINE HAVING A FUEL INJECTOR, A TRANSDUCER MOUNTED ON SAID FUEL INJECTOR SO AS TO GENERATE AN ELECTRICAL SIGNAL RESPONSIVE TO EACH VIBRATION OF THE INJECTOR PRODUCED BY THE OPENING THEREOF, A SOURCE OF CURRENT, A RELAY, A PAIR OF OUTPUT TERMINALS, SAID RELAY, WHEN DEENERGIZED COMPLETING A CIRCUIT BETWEEN THE SOURCE AND THE OUTPUT TERMINALS, A GATED DIODE HAVING A GATE ELECTRODE, MEANS CONNECTING SAID GATED DIODE AND RELAY IN A SERIES CIRCUIT TO SAID SOURCE OF CURRENT, CIRCUIT MEANS CONNECTING SAID TRANSDUCER TO SAID GATE ELECTRODE TO TRIGGER SAID DIODE RESPONSIVE TO EACH OF SAID ELECTRICAL SIGNALS, WHEREBY TO ENERGIZE SAID RELAY, MEANS TO SHORT CIRCUIT SAID SERIES CIRCUIT RESPONSIVE TO ENERGIZATION OF THE RELAY, WHEREBY TO CUT OFF THE GATED DIODE, AND DEENERGIZE THE RELAY, AND MEANS CONNECTED TO THE OUTPUT TERMINALS TO COUNT AND INDICATE THE FREQUENCY OF SAID ELECTRICAL SIGNAL PULSES.
References Cited (Backward Citations)
US2679629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |