发明名称 |
Hand Operated Pump |
摘要 |
A hand operated pump for generating negative and positive air pressure. The pump includes a pump body having a pump cylinder and a piston mounted for reciprocation in the cylinder. A selector valve communicates with the cylinder and is moveable between a positive-pressure position and a negative-pressure position. The arrangement is such that operation of an actuator to move the piston through a power stroke when the selector valve is in its negative-pressure position causes the pump to generate negative pressure at an outlet of the pump, and operation of the actuator to move the piston through a power stroke when the selector valve is in its positive-pressure position causes the pump to generate positive pressure at the outlet of the pump. A method of operating such a pump is also disclosed.
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申请公布号 |
US2010098557(A1) |
申请公布日期 |
2010.04.22 |
申请号 |
US20080254674 |
申请日期 |
2008.10.20 |
申请人 |
LINCOLN INDUSTRIAL CORPORATION |
发明人 |
SANDERS SCOTT A.;GRACH AYZIK |
分类号 |
F04B33/00;F04B49/22;F04B53/12 |
主分类号 |
F04B33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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