| 摘要 |
PROBLEM TO BE SOLVED: To provide high pressure and sucking force by using a piston having new shape and structure in a biaxial rotary pump system. SOLUTION: New shaped rotors 2, 3 are made to rotate in a casing, and two suction ports are disposed at particular positions on a side plate of the casing. A groove of the rotor and a discharge port and are disposed to overlap with each other when the pressure becomes high by sucking from the suction ports.
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