| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Sand cutter | US42639020 | 1920-11-26 | US1512406A | 1924-10-21 | CHAMBERS JOHN E; DOLSEN EMMET L VAN |
| 2 | 믹서카용 에어탱크 압력 유지장치 | KR1020080084691 | 2008-08-28 | KR1020100025935A | 2010-03-10 | 이영연 |
| PURPOSE: An apparatus for controlling inner pressure of an air tank for a mixer car is provided to regularly maintain the inner pressure of the air tank which supplies pressure to a cylinder driving an inner structure of the mixer car. CONSTITUTION: An apparatus for controlling inner pressure of an air tank for a mixer car comprises the following: a first and a second pressure sensing switch(10,20) sensing the inner pressure of the air tank which supplies air to a cylinder driving an inner structure of the mixer car; a determining unit(30) deciding the level of the inner pressure of the air tank detected from the first and the second pressure sensing switch; and a controlling unit(40) outputting a control signal to cut off the air supplied to the cylinder while the inner pressure inside the air tank is below the mid-level of the standard by the decision of the determining unit. The first and the second pressure sensing switch generates an on-signal and an off-signal by the fixed pressure value. | ||||||
QQ群二维码
意见反馈
意见反馈