Patents by Inventor Masatosi Taniyama

Masatosi Taniyama 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 sealing device and bearing sealing mechanism capable of preventing the leakage of grease
    Patent number: 5607240
    Abstract: There is provided a bearing sealing device capable of substantially completely preventing a leak of grease. A taper end portion of an axial extension of the bearing sealing device has an opposite surface and a rake face that forms a specified rake angle with the opposite surface. The opposite surface forms a narrow passage between the opposite surface and an outer peripheral surface of an inner ring. The narrow passage allows air to pass easily, but it allows grease to hardly pass therethrough. Further, the axial extension includes part of a core metal that extends axially and has its foremost end located axially inside an axial outermost end of the outer peripheral surface of the inner ring. Grease moving axially outwardly on the outer peripheral surface is moved along the rake face of the taper end portion and then guided along a cover portion of the bearing sealing device to an outer ring. The part of the core metal prevents the axial extension from being bent radially outwardly by a centrifugal force.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: March 4, 1997
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Kazuhisa Kajihara, Masatosi Taniyama, Kunio Yanai, Hiroshi Ueno
  • Bearing sealing device and bearing sealing mechanism capable of preventing the leakage of grease
    Patent number: RE36804
    Abstract: There is provided a bearing sealing device capable of substantially completely preventing a leak of grease. A taper end portion of an axial extension of the bearing sealing device has an opposite surface and a rake face that forms a specified rake angle with the opposite surface. The opposite surface forms a narrow passage between the opposite surface and an outer peripheral surface of an inner ring. The narrow passage allows air to pass easily, but it allows grease to hardly pass therethrough. Further, the axial extension includes part of a core metal that extends axially and has its foremost end located axially inside an axial outermost end of the outer peripheral surface of the inner ring. Grease moving axially outwardly on the outer peripheral surface is moved along the rake face of the taper end portion and then guided along a cover portion of the bearing sealing device to an outer ring. The part of the core metal prevents the axial extension from being bent radially outwardly by a centrifugal force.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: August 1, 2000
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Kazuhisa Kajihara, Masatosi Taniyama, Kunio Yanai, Hiroshi Ueno