Patent ID: 7056105

Claim:
A unit utilizing current to control reciprocation for pushing fluids, comprising: a chamber having a certain length and two openings at two ends; a magnet having a certain length, a shape of outer circumference of the magnet corresponding to a shape of inner circumference of the chamber, whereby the magnet is slidably disposed in the chamber; a coil disposed on outer side of the chamber and connected with a circuit, the circuit providing a variable current direction for the coil for driving the magnet to reciprocally move; a first inlet and a first outlet disposed at one end of the chamber; a second inlet and a second outlet disposed at the other end of the chamber; a first valve disposed between the first inlet, the first outlet and the chamber, the first valve being translationally movable along the axis of the chamber between a first position and a second position, whereby in the first position, the first valve blocks the first inlet without blocking the first outlet, while in the second position, the first valve blocks the first outlet without blocking the first inlet; and a second valve disposed between the second inlet, the second outlet and the chamber, the first valve being translationally movable along the axis of the chamber between a third position and a fourth position, whereby in the third position, the second valve blocks the second inlet without blocking the second outlet, while in the fourth position, the second valve blocks the second outlet without blocking the second inlet, when the magnet gets close to the first valve, the first valve being positioned in the first position, while the second valve being positioned in the fourth position, when the magnet gets close to the second valve, the first valve being positioned in the second position, while the second valve being positioned in the third position.