Patent ID: 8157546

Claim:
A fluid transporting device, comprising: an elastic tube; a tube frame that holds the elastic tube in an arc; a rotary disc disposed in the arc, the rotational center of the rotary disc aligning with the center of the arc; a plurality of push pins disposed between the elastic tube and the rotary disc; and a rotary push plate arranged on an upper side of the rotary disc for facilitating fluid flow inside the elastic tube from an inlet to an outlet by pushing the plurality of push pins sequentially, the rotary push plate including; a plurality of protrusions that place a bias on the elastic tube by pushing the plurality of push pins sequentially; and a recess disposed between the plurality of protrusions that releases the bias from the elastic tube, wherein the push pins each include: a semispherical end portion that contacts the rotary push plate; and a pushing end portion that places the bias on the elastic tube; and each of the protrusions includes an arc that merges into a first slope that terminates at an outer circumference arc, that contacts the semispherical end portion of the push pin, and a second slope that extends away from the outer circumference arc.