Patents by Inventor Saburo Azumi

Saburo Azumi 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).

  • Rolling bearing and spindle device for machine tools
    Publication number: 20070266821
    Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.
    Type: Application
    Filed: July 24, 2007
    Publication date: November 22, 2007
    Inventors: Saburo Azumi, Yasushi Morita, Naoki Matsuyama, Takaaki Anzai
  • Rolling bearing and spindle device for machine tools
    Patent number: 7267488
    Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: September 11, 2007
    Assignee: NSK Ltd.
    Inventors: Saburo Azumi, Yasushi Morita, Naoki Matsuyama, Takaaki Anzai
  • Rolling bearing and spindle device for machine tools
    Publication number: 20050129342
    Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.
    Type: Application
    Filed: February 8, 2005
    Publication date: June 16, 2005
    Inventors: Saburo Azumi, Yasushi Morita, Naoki Matsuyama, Takaaki Anzai
  • Rolling bearing and spindle device for machine tools
    Patent number: 6869223
    Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: March 22, 2005
    Assignee: NSK Ltd.
    Inventors: Saburo Azumi, Yasushi Morita, Naoki Matsuyama, Takaaki Anzai
  • Rolling bearing and spindle device for machine tools
    Publication number: 20030113048
    Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.
    Type: Application
    Filed: August 1, 2002
    Publication date: June 19, 2003
    Applicant: NSK LTD.
    Inventors: Saburo Azumi, Yasushi Morita, Naoki Matsuyama, Takaaki Anzai