发明名称 Toothpaste dispenser with a flexible air compressing bag used to bring about dispensing
摘要 A toothpaste dispenser having a chamber which is operated by a flexible bag extending longitudinally alongside the chamber. A one way valve is provided at the bottom of the chamber through which air, under pressure, is introduced when the bag is compressed manually. A toothpaste pusher inside the chamber is moved vertically upwardly by the air under pressure introduced through the one-way valve. The toothpaste pusher takes the form of a bellows.
申请公布号 US5115948(A) 申请公布日期 1992.05.26
申请号 US19900538530 申请日期 1990.06.15
申请人 JOHNSON, ROBIN L. 发明人 JOHNSON, ROBIN L.
分类号 A47K5/12;B05B11/02;G01F11/02;G01F11/08 主分类号 A47K5/12
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