Patents by Inventor Kazushi Gotou

Kazushi Gotou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bearing device using felt member and method of manufacturing same
    Patent number: 6398415
    Abstract: A bearing device for a rotary shaft is comprised of a porous sliding bearing and a felt ring fit around the sliding bearing. The sliding bearing and the felt ring are filled with lubricant oil. The felt ring is made of needle-punching polypropylene fibers of 0.4-20 micrometers in diameter. The felt ring is manufactured by shaping the polypropylene fibers into a felt sheet, heat-treating the felt sheet to eliminate fuzz from the sheet surfaces, and punching the felt sheet in a ring shape. The sliding bearing has a plurality of grooves on its outer peripheral surface with which the felt ring contacts. Each groove is formed to extend in a horizontal direction to restrict the lubricant oil from flowing downward.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: June 4, 2002
    Assignee: Asmo Co., Ltd.
    Inventors: Hiromitsu Ibe, Hisashi Sakakibara, Shigeru Morishita, Kazushi Gotou, Yousuke Natsume, Hiroto Kawai