US4193385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine stopping device
Assignee: Mahle Electric Drive Systems Co Ltd
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Filing: 1977-08-10
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Granted: 1980-03-18
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Expires: 1997-08-10
Abstract
Abstract An engine stopping device for stopping an internal combustion engine provided with an ignition system energized by a generator driven by the engine. The stopping device comprises a switch for making ineffective at least one of the elements of the ignition system, an actuator for actuating the switch into the operated state and a retaining device for retaining the switch in the operated state until the engine is brought to a standstill. Although it takes time for the engine to be brought to a standstill, the operator just has to give the actuator one touch operation, such as pressing a button, and may release the actuator before the standstill. Subsequent starting of the engine requires no extra operation.
Inventors
- 👤 Mitsuo Katsumata
- 👤 Hiroo Sato
- 👤 Yoshihiko Ikeda
- 👤 Tomikazu Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
F; F02; F02P; F02P11/00; F02P11/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
An engine stopping device for stopping an internal combustion engine provided with an ignition system energized by a generator driven by the engine, said stopping device comprising a first thyristor for providing a bypass in shunt with a power source of the ignition system, said thyristor being connected across the ignition power source, a series circuit of a resistor and a capacitor, said series circuit being connected across a gate and cathode of said thyristor so that said capacitor is charged by the voltage drop across the gate and cathode of said thyristor, and a manually-operated self-returning switch which is adapted to couple said ignition power source and the gate of said thyristor so that a trigger signal is supplied to said thyristor when the self-returning switch is operated to stop the engine.
Claim 2
Dependent Claim
133 words
An engine stopping device for stopping an internal combustion engine provided with an ignition system energized by a generator driven by the engine, said stopping device comprising a first thyristor for providing a bypass in shunt with a power source of the ignition system, said thyristor being connected across the ignition power source, a series circuit of a resistor and a capacitor, said series circuit being connected across a gate and cathode of said thyristor so that said capacitor is charged by the voltage drop across the gate and cathode of said thyristor, and a manually-operated self-returning switch which is adapted to couple said ignition power source and the gate of said thyristor so that a trigger signal is supplied to said thyristor when the self-returning switch is operated to stop the engine.
Claim 3
Dependent Claim
42 words
An engine stopping device as set forth in claim 1, wherein the ignition system comprises a semiconductor switch for controlling the primary current of the ignition coil and said thyristor is adapted to provide a bypass in shunt with the semiconductor switch.
Claim 4
Dependent Claim
45 words
An engine stopping device as set forth in claim 1, wherein the ignition system comprises a second thyristor for controlling the primary current of the ignition coil and said is adapted to provide a bypass across the anode and cathode of the said second thyristor.
Claim 5
Dependent Claim
24 words
An engine stopping device as set forth in claim 1, wherein said capacitor is connected through said self-returning switch across said ignition power source.
Claim 6
Dependent Claim
27 words
An engine stopping device as set forth in claim 4, further comprising a diode and said capacitor is connected through said diode across said ignition power source.
References Cited (Backward Citations)
US3703889A
Cited
US3863616A
Cited
US3964461A
Cited
US3960128A
Cited
US4036200A
Cited
US4073279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |