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专利名称：DIAPHRAGM PUMP POSITION CONTROL
WITH OFFSET VALVE AXIS
发明人：HEMBREE, Richard, D.申请号：EP08747303.9申请日：20080501公开号：EP2145109A1公开日：20100120
摘要：A hydraulically driven pump includes a diaphragm, a piston, a transfer chamber,a fluid reservoir, and a valve spool. The transfer chamber is defined between thediaphragm and piston and is filled with a hydraulic fluid. The fluid reservoir is in fluidcommunication with the transfer chamber via at least one valve. The valve spool isconfigured to control fluid flow between the transfer chamber and the fluid reservoir.The valve spool is movable to open and close an opening into the at least one valve onlywhen an overfill condition or an underfill condition exists in the transfer chamber. Thevalve spool is moveable along an axis that is non-coaxial with an axis of movement of thediaphragm.
申请人：WANNER ENGINEERING, INC.
地址：1204 Chestnut Avenue Minneapolis, MN 55403 US
国籍：US
代理机构：Lotti, Giorgio
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