|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||417/053; 417/393; 417/395; 417/479; 417/521; 222/105; 222/129|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 67 인용 특허 : 184|
A pump has a flexible liner which is expanded and contracted by application of positive and negative fluid pressure for receiving and discharging fluent material. The liner is received in a rigid shell which defines the maximum volume received. In discharging fluent material, a vacuum is applied to one side of the liner, while applying pressure to the other side so the liner is collapsed against the rigid shell. The liner is arranged so as to be the only part of the pump which contacts the fluent material, and is replaceable to effect rapid and easy clea...
1. A pump for pumping a fluent material comprising:a liner including opposing walls of flexible material defining a plurality of pump cells, an inlet and an outlet, the pump cells being sized and shaped for receiving a quantity of the fluent material and being expandable for receiving fluent material and contractible for discharging fluent material; a rigid shell adapted to receive and substantially enclose at least the pump cells of the liner, the shell being formed with a plurality of receptacles therein to receive in close fitting relation the pump ce...