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US 2014/0227122 A1Published application
Claw pump
AssigneeAnest Iwata Corporation
InventorsShiro Tanigawa, Takahiro Kagami
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AssigneeAnest Iwata Corporation
InventorsShiro Tanigawa, Takahiro Kagami
Estimating the term…
In a pump chamber (12), a male rotor (20) having claw portions and a female rotor (24) having recesses into which the claw portions enter are secured to rotating shafts (18a and 18b), respectively. The female rotor is provided with hollows on an upstream side in the rotational direction of the female rotor relative to a plane L containing the rotating shafts. For the hollows, the disposed position, size and configuration are selected so that a compression pocket P and a discharge opening remain in communication with each other through the hollow throughout the time from when the compression pocket stops communicating with the discharge opening and separates from the discharge opening until the compression pocket gradually reduces to disappear, and so that the hollow stops communicating with the discharge opening at the same time as the compression pocket disappears.
A claw pump having a pair of mutually parallel rotating shafts rotating in opposite directions to each other, a pair of rotors secured to the pair of rotating shafts, respectively, the pair of rotors including a first rotor having a claw portion projecting in a radial direction and a second rotor having a recess into which the claw portion enters, a pump chamber accommodating the pair of rotors, a suction opening formed in the pump chamber on one side of a plane containing axes of the pair of rotating shafts, and a discharge opening formed in the pump chamber on an other side of the plane, the claw pump comprising:
Dependencies are inferred from the claim text.