| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil feeding pump can prevent liquid drippage from an ejection pipe by discharging forcedly the residual liquid adhered to the inside of the ejection pipe. SOLUTION: The oil feeding pump includes at one end thereof, a first pumping chamber to perform the oil suction and ejection to be operated by pressing its hollow part, a body part having a suction pipe and the ejection pipe in connection with the first pumping chamber, and a second pumping chamber consisting of a hollow operating with pressing and provided in the middle of the ejection pipe. When after feeding the oil, the second pumping chamber is operated to cause air exhaust, the residual liquid adhered to the peripheral wall of the chip of an air exhaust pipe is ejected forcedly by the air exhaust, which prevents liquid drippage from the ejection pipe. COPYRIGHT: (C)2010,JPO&INPIT
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