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...
Publication Date: 05/11/1999 Filing Date: 11/07/1997 Export Citation: Click for automatic bibliography generation Assignee: Anest Iwata Kabushikikaisha (Corporation) (Tokyo, JP) Primary Class: D23/226 Field of Search: D23/213, D23/214, D23/223, D23/226, D23/229, D23/230, 239/459,...