초록 ▼

An apparatus for pumping fluid at a steady rate. A first drive chamber having a movable outer surface, and a second drive chamber having a movable outer surface are provided. The apparatus further includes a block having a plurality of internal passages including a first passage for receiving the fl

An apparatus for pumping fluid at a steady rate. A first drive chamber having a movable outer surface, and a second drive chamber having a movable outer surface are provided. The apparatus further includes a block having a plurality of internal passages including a first passage for receiving the fluid into the block and a second passage for discharging the fluid from the block at the steady rate. The block has first and second internal chambers which are in fluid connection with the first and second passages. The first internal chamber has a first flexible surface for mating with the movable outer surface of the first drive chamber, and the second internal chamber has a second flexible surface for mating with the movable outer surface of the second drive chamber. At least one actuator is provided for applying positive pressure to the first flexible surface while simultaneously applying negative pressure to the second flexible surface and for applying negative pressure to the first flexible surface while simultaneously applying positive pressure to the second flexible surface. The actuator is respectively coupled to the first and second flexible surfaces by the first and second drive chambers.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for pumping fluid at a steady rate comprising:(A) a first drive chamber having a movable outer surface;(B) a second drive chamber having a movable outer surface;(C) a block having a plurality of internal passages including a first passage for receiving said f

[ What is claimed is:] [1.] An apparatus for pumping fluid at a steady rate comprising:(A) a first drive chamber having a movable outer surface;(B) a second drive chamber having a movable outer surface;(C) a block having a plurality of internal passages including a first passage for receiving said fluid into said block and a second passage for discharging said fluid from said block at said steady rate, said block having first and second internal chambers in fluid connection with said first and second passages, said first internal chamber having a first flexible surface for mating with said movable outer surface of said first drive chamber, said second internal chamber having a second flexible surface for mating with said movable outer surface of said second drive chamber;(D) at least one actuator for applying positive pressure to said first flexible surface while simultaneously applying negative pressure to said second flexible surface and for applying negative pressure to said first flexible surface while simultaneously applying positive pressure to said second flexible surface, said at least one actuator being respectively coupled to said first and second flexible surfaces by said first and second drive chambers.