Construction machine
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United States of America Patent
Stats
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Jan 26, 2021
Grant Date -
Oct 31, 2019
app pub date -
Dec 20, 2017
filing date -
Dec 21, 2016
priority date (Note) -
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Importance
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Abstract
A construction machine includes: one or more hydraulic pumps discharging a working fluid; an engine supplying a rotational power to the hydraulic pumps; a hydraulic line through which the working fluid discharged by the hydraulic pumps moves; a main control valve provided on the hydraulic line and controlling supply of the working fluid to a traveling device or one or more of various working devices, which require the working fluid; a bypass cut valve provided on the hydraulic line at a lower side thereof than the main control valve to open and close the hydraulic line; an automatic warm-up switch generating a warm-up operation signal for raising a temperature of the working fluid before an operation starts; and a control device performing a warm-up operation for increasing the number of revolutions of the engine and opening the bypass cut valve to increase a flow rate along the hydraulic line, when the warm-up operation signal is received from the automatic warm-up switch.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HD HYUNDAI INFRACORE CO LTD | 489 INJUNG-RO DONG-GU INCHEON 22502 |
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kim, Tae Yoon | Seoul, KR | 110 | 503 |
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