专利名称：Plastic sanitary pump发明人：Chen-Min Ruo申请号：US05/909522申请日：19780525公开号：US041851A公开日：19800205
摘要：A plastic sanitary pump comprises a cylinder, an elastic disc attached to thebottom of the cylinder, a piston and piston rod, a cap covered on the top of the cylinderand a handle connected with the upper end of the piston rod. All the parts are made ofplastic material; therefore, the present invention is light weight and will not rust. It can beoperated easily and has excellent effect in releasing the blockage in drain pipe of toilet.
申请人：RUO, CHEN-MIN
代理机构：Armstrong, Nikaido, Marmelstein & Kubovcik
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