Patents by Inventor Hiroji Etoh

Hiroji Etoh 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).

  • Lubricating structure for oil seals assembled with bearings
    Patent number: 6004039
    Abstract: In a structure for lubricating an oil seal interposed between a shaft and an outer circumferential member that surrounds the shaft, a bearing device provides: a shaft rotatable; an outer case surrounding the shaft and including a large-diameter portion, a medium-diameter portion, a small-diameter portion, and a contact portion connecting the medium-diameter portion and the small-diameter portion; a bearing assembly disposed in the large-diameter portion for supporting the shaft; an oil seal assembly interposed between the shaft and the outer case and contacting the medium-diameter portion and the contact portion; and a lubricant-containing member fitted to the oil seal assembly and molded plastically in an annular shape out of a resinous material containing a lubricant. The structure improved by the bearing device ensures satisfactory lubricating effects in a consistent manner.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: December 21, 1999
    Assignee: NSK Ltd.
    Inventors: Toshikazu Yabe, Fumio Ueki, Hiroji Etoh