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专利名称：Diaphragm pump发明人：Yokomichi, Manabu申请号：EP10008243.7申请日：19990217公开号：EP2241756A2公开日：20101020
专利附图：
摘要：A diaphragm pump, in which a working fluid control valve (D) opens a workingfluid make-up passage (B24) to prevent a diaphragm (C) from being damaged when anexcessive discharge pressure acts on the diaphragm. The working fluid control valve (D)for opening and closing the working fluid make-up passage (B24) is provided with a valve
disc formed to be capable of reciprocating relative to the diaphragm (C) in a valve discreceiving chamber (B2) to close an opening of the valve disc receiving chamber (B2),means for biasing the valve disc toward the diaphragm, and means for closing theworking fluid make-up passage (B24) when a distance, over which the valve disc extendsfrom the opening of the valve disc receiving chamber, exceeds a predetermined value.
申请人：Nikkiso Company Limited
地址：43-2, Ebisu 3-chome Shibuya-ku Tokyo 150-8677 JP
国籍：JP
代理机构：Wagner, Bernhard Peter
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