US5990800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote engine starting and stopping device for construction machine
Assignee: Komatsu Ltd
•
Filing: 1995-11-16
•
Granted: 1999-11-23
•
Expires: 2015-11-16
Abstract
Abstract The invention relates to a device which aims to improve safety and reliability in a remote engine starting and stopping device for construction machines. A starting signal for starting an engine is transmitted to a construction machine from a transmission which is separate from the construction machine. The starting signal is received by a receiver on the construction machine. When the starting signal is received by the receiver, an engine starting device is driven for starting of an engine on condition that an operating lever for a working machine being on a neutral position is detected by a neutral position detection. As a result, a danger of the working machine coming into motion in an unmanned state is avoided for improvement of safety. Further, if the engine having worked is detected by a working condition detection after an engine starting device is driven by the engine start, the engine is made to work until a predetermined period of time elapses after a point of time when the detection is effected. As a result, warm-up is performed for a preset time after a point of time when the engine is actually made to work, so that reliability in unmanned operation is improved.
Inventors
- 👤 Hideo Tamaki
- 👤 Toyoichi Ono
- 👤 Hiroshi Oshima
- 👤 Tasuku Nakano
- 👤 Toshiaki Nawa
- 👤 Yuji Fukano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/10; F02N11/101; F02N11/08; F02N11/0803; F02N11/0807; F02N11/103
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating normally; and engine stopping means for driving a stopping device of the engine when, after the engine starting device has been driven by the engine starting means, the operating condition detecting means ceases to detect that the engine is in a rotating condition.
Claim 2
Dependent Claim
203 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating normally; and engine stopping means for driving a stopping device of the engine when, after the engine starting device has been driven by the engine starting means, the operating condition detecting means ceases to detect that the engine is in a rotating condition.
Claim 3
Dependent Claim
61 words
The remote engine starting and stopping device for the construction machine according to claim 1, wherein the safety condition is that an operating element for operating a working machine of the construction machine is positioned in a neutral position, and wherein the starting device of the engine is driven when detected that the operating element is positioned in the neutral position.
Claim 4
Dependent Claim
249 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; engine stopping means for driving a stopping device of the engine; operating condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating; timer means for causing the engine stopping means to drive the engine stopping device at a time point where a prescribed time has elapsed after driving of the engine starting device by the engine starting means; and alarm signal output means for outputting an alarm signal indicating that the engine has not stopped when, after the engine stopping device has been driven by the engine stopping means, the operating condition detecting means detects that the engine is operating.
Claim 5
Dependent Claim
249 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; engine stopping means for driving a stopping device of the engine; operating condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating; timer means for causing the engine stopping means to drive the engine stopping device at a time point where a prescribed time has elapsed after driving of the engine starting device by the engine starting means; and alarm signal output means for outputting an alarm signal indicating that the engine has not stopped when, after the engine stopping device has been driven by the engine stopping means, the operating condition detecting means detects that the engine is operating.
Claim 6
Dependent Claim
219 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; unmanned state detecting means for detecting a state in which the engine is rotating in accordance with an engine start signal transmitted from the transmitting means; unmanned condition detecting means for detecting that the construction machine is in an unmanned condition; and engine stopping means for driving a stopping device of the engine under a condition that the unmanned condition detecting means has detected the unmanned condition, when the stopping signal has been received by the receiving means.
Claim 7
Dependent Claim
219 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; unmanned state detecting means for detecting a state in which the engine is rotating in accordance with an engine start signal transmitted from the transmitting means; unmanned condition detecting means for detecting that the construction machine is in an unmanned condition; and engine stopping means for driving a stopping device of the engine under a condition that the unmanned condition detecting means has detected the unmanned condition, when the stopping signal has been received by the receiving means.
Claim 8
Dependent Claim
238 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; unmanned condition detecting means for detecting that the construction machine is in an unmanned condition; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating; and answer back signal outputting means for outputting an answer back signal indicating that the engine is in the rotating condition, under a condition that, when said answer back signal has been received by the receiving means, the unmanned condition detecting means has detected the unmanned condition and the operating condition detecting means has detected that the engine is in the rotating condition.
Claim 9
Dependent Claim
238 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; unmanned condition detecting means for detecting that the construction machine is in an unmanned condition; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that the engine is rotating; and answer back signal outputting means for outputting an answer back signal indicating that the engine is in the rotating condition, under a condition that, when said answer back signal has been received by the receiving means, the unmanned condition detecting means has detected the unmanned condition and the operating condition detecting means has detected that the engine is in the rotating condition.
Claim 10
Dependent Claim
258 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that a plurality of conditions are satisfied indicating that the engine is rotating normally; timer means for causing the engine to operate, when the operation condition detecting means detects that the engine has been operated after the engine starting device has been driven by the engine starting means, from the time point of the detection until a redetermined time has elapsed; and engine stopping means for driving a stopping device of the engine when, after the engine starting device has been driven by the engine starting means, the operating condition detecting means ceases to detect that the engine is in a rotating condition.
Claim 11
Dependent Claim
258 words
A remote engine starting and stopping device for a construction machine, which is capable of starting an engine incorporated in the construction machine from a remote location and stopping an operation of the engine after a prescribed time has elapsed, the device comprising: transmitting means separate from the construction machine, for transmitting a start signal for starting the engine to the construction machine; wherein the construction machine comprises: receiving means for receiving the start signal transmitted from the transmission means; safety condition detecting means for detecting that a safety condition for unmanned operation of the construction machine is satisfied; engine starting means for driving a starting device of the engine when the start signal is received by the receiving means and when the safety condition detecting means detects that the safety condition for unmanned operation of the construction machine is satisfied; operation condition detecting means for detecting a plurality of conditions are satisfied which indicate that a plurality of conditions are satisfied indicating that the engine is rotating normally; timer means for causing the engine to operate, when the operation condition detecting means detects that the engine has been operated after the engine starting device has been driven by the engine starting means, from the time point of the detection until a redetermined time has elapsed; and engine stopping means for driving a stopping device of the engine when, after the engine starting device has been driven by the engine starting means, the operating condition detecting means ceases to detect that the engine is in a rotating condition.
References Cited (Backward Citations)
US4080537A
Cited
US4227588A
Cited
US4621375A
Cited
US4674454A
Cited
JPS63277858A
Cited
CA1277745C
Cited
US5067321A
Cited
US5042439A
Cited
JPH0439145A
Cited
JPH0549867A
Cited
JPH05130686A
Cited
JPH0622545U
Cited
JPH06147069A
Cited
JPH0712560U
Cited
JPH0771281A
Cited
US5757086A
Cited
US5721550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |