Patents Assigned to Iwata Air Compressor Manufacturing Company Ltd.
  • Worm-type rotary fluid compressor
    Patent number: 4373881
    Abstract: This invention relates to worm-type rotary fluid means, wherein a worm body having a plurality of helical screw threads and a plurality of grooves therebetween is engaged with a cylindrical pinion having a plurality of teeth. In this engagement, the fluid discharge volume is increased much greater than that of a conventional worm. This is due to the fact that the engagement of each pinion tooth of each worm groove has increased contact length and depth. Further, this causes a very stable engagement.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: February 15, 1983
    Assignee: Iwata Air Compressor Manufacturing Company Ltd.
    Inventor: Yoshio Matsushita