Patent US4574752A successfully refreshed from Google Patents.
US4574752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine shutdown device
Assignee: Individual
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Filing: 1984-10-15
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Granted: 1986-03-11
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Expires: 2004-10-15
Abstract
Abstract An internal combustion engine shutdown device is disclosed. The device stops an engine running at high speed in a controlled fashion when a condition arises in a peripheral device or apparatus being driven or operated by the engine. The device provides a relay, a fuel shutoff control, an engine throttle control, and a timer. Upon the receipt of an external signal such as the de-energizing of a conventional "kill switch", the device immediately reduces engine speed to idle by the throttle control and delays the stopping of the engine by the timer until a pre-set time period has passed. Once the time period has elapsed so that the engine is in the proper state to be stopped, the fuel to the engine is cut off by the fuel shutoff control. The device is particularly adapted to the operation of an internal combustion engine used in a center pivot irrigation system.
Inventors
- 👤 Marvion E. Reichert, Jr.
- 👤 William D. Simmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:30
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/08; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06; F02P; F02P11/00; F02P11/02; F02P11/025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
An internal combustion engine shutdown device for the controlled stopping of an internal combustion engine upon the receipt of a signal, the engine of the type having an ignition system, a fuel supply in fluid communication with the engine and an engine speed control; the device comprising: a relay means for relaying the signal; a timing means for determining a pre-set time period; a throttle control means for controlling said engine speed control; and an engine stopping means for stopping the engine wherein said relay means is operably connected to said timing means and to said throttle control means and wherein said timing means is operably connected to said engine stopping means and wherein said throttle control means is operably connected to said engine speed control.
Claim 2
Dependent Claim
126 words
An internal combustion engine shutdown device for the controlled stopping of an internal combustion engine upon the receipt of a signal, the engine of the type having an ignition system, a fuel supply in fluid communication with the engine and an engine speed control; the device comprising: a relay means for relaying the signal; a timing means for determining a pre-set time period; a throttle control means for controlling said engine speed control; and an engine stopping means for stopping the engine wherein said relay means is operably connected to said timing means and to said throttle control means and wherein said timing means is operably connected to said engine stopping means and wherein said throttle control means is operably connected to said engine speed control.
Claim 3
Dependent Claim
18 words
The engine shutdown device as described in claim 1 wherein said relay means comprises an electrical double-pole relay.
Claim 4
Dependent Claim
18 words
The engine shutdown device as described in claim 1 wherein said timing means comprises an off-delay pneumatic timer.
Claim 5
Dependent Claim
29 words
The engine shutdown device as described in claim 1 wherein said engine stopping means comprises an electrically operated valve in fluid communication between the fuel supply and the engine.
Claim 6
Dependent Claim
17 words
The engine shutdown device as described in claim 1 wherein said throttle control means comprises a solenoid.
Claim 7
Dependent Claim
29 words
The engine shutdown device as described in claim 5 wherein said throttle control means further comprises an adjustable rod operably connected between said solenoid and said engine speed control.
Claim 8
Dependent Claim
23 words
The engine shutdown device as described in claim 1 further comprising a test switch operably connected between said signal and said relay means.
Claim 9
Dependent Claim
23 words
The engine shutdown device as described in claim 7 further comprising a fuse operably connected between said test switch and said relay means.
Claim 10
Dependent Claim
24 words
The engine shutdown device as described in claim 8 further comprising a fuel shutoff bypass switch operably connected to said electrically operated fuel valve.
Claim 11
Dependent Claim
27 words
The engine shutdown device as described in claim 9 wherein said engine stopping means comprises an electrically operated fuel shutoff valve operably connected to said timing means.
Claim 12
Dependent Claim
32 words
The engine shutdown device as described in claim 9 wherein said engine stopping means comprises an electrically operated ignition shutoff switch operably connected between said engine ignition system and said timing means.
Claim 13
Independent Claim
180 words
A method for the controlled stopping of an internal combustion engine upon the receipt of a signal, the engine of the type having a fuel supply in fluid communication with the engine and an engine speed control; the method comprising the steps of: providing a relay means for relaying the signal; a timing means for determining a pre-set time period; a throttle control means for controlling said engine speed control; and an engine stopping means for stopping the engine wherein said relay means is operably connected to said timing means and to said throttle control means and wherein said timing means is operably connected to said engine stopping means and wherein said throttle control means is operably connected to said engine speed control; relaying the signal by the relay means to the timing means to start the timing means; relaying the signal to the throttle control means to reduce the engine speed by slowing said engine speed control; delaying a pre-set period of time by use of the timing means; and stopping the engine by activating said engine stopping means.
Claim 14
Independent Claim
180 words
A method for the controlled stopping of an internal combustion engine upon the receipt of a signal, the engine of the type having a fuel supply in fluid communication with the engine and an engine speed control; the method comprising the steps of: providing a relay means for relaying the signal; a timing means for determining a pre-set time period; a throttle control means for controlling said engine speed control; and an engine stopping means for stopping the engine wherein said relay means is operably connected to said timing means and to said throttle control means and wherein said timing means is operably connected to said engine stopping means and wherein said throttle control means is operably connected to said engine speed control; relaying the signal by the relay means to the timing means to start the timing means; relaying the signal to the throttle control means to reduce the engine speed by slowing said engine speed control; delaying a pre-set period of time by use of the timing means; and stopping the engine by activating said engine stopping means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |