Pumping device for sucking or draining fluid

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United States of America Patent

PATENT NO 8858189
APP PUB NO 20130092262A1
SERIAL NO

13271332

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Importance

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Abstract

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A pumping device includes a barrel (1), a top cover (2), a switching valve (3), a cylinder (4), a piston (53), a connecting unit (6), an operation unit (5), a delivery unit (7), a pressure gauge (8), and a pressure release unit (9). Thus, the user has to pull or push the switching valve to extract or suck the air in the barrel so as to deflate or inflate the barrel so that the pumping device has a security process and is operated in a safer manner. In addition, the flow of the fluid is proceeded in the barrel so that the pumping device is operated smoothly and conveniently.

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International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Kun-Wang Tainan, TW 13 9

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