Patents by Inventor Akitaka Matsushita

Akitaka Matsushita 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).

  • Patent number: 6688953
    Abstract: A barrel polishing apparatus which can easily hold a work having a large mass and detach therefrom. The barrel polishing apparatus includes a polishing medium receiving container having a polishing medium received therein and a work supporting arm for holding the work. The position of the work supporting arm is shifted from the center of the polishing medium receiving container. The polishing medium receiving container rotates about a vertical axis to form a continuous circumferential flow of polishing medium therein and includes an upper end opening for receiving the work attached to a distal end of the work supporting arm. The work supporting arm is oriented diagonally toward a direction of the continuous circumferential flow of polishing medium.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: February 10, 2004
    Assignees: BBF Yamate Corporation
    Inventors: Shuji Kawasaki, Akitaka Matsushita
  • Publication number: 20020077047
    Abstract: A barrel polishing apparatus which can easily hold a work having a large mass and detach therefrom. The barrel polishing apparatus includes a polishing medium receiving container having a polishing medium received therein and a work supporting arm for holding the work. The work supporting arm is shifted from the center of the polishing medium receiving container. The polishing medium receiving container rotates about a vertical axis to form a continuous circumferential flow of polishing medium therein and includes an upper end opening for receiving the work supported at an end of the work supporting arm. The work supporting arm is oriented diagonally toward a direction of the continuous circumferential flow of polishing medium.
    Type: Application
    Filed: June 26, 2001
    Publication date: June 20, 2002
    Inventors: Shuji Kawasaki, Akitaka Matsushita
  • Publication number: 20010041502
    Abstract: A wet type buffing method is practiced such that a final buffing step is conducted in a buffing liquid having alkality and the remaining buffing steps are conducted in other buffing liquid having acidity. A work buffing apparatus is constructed such that a disconnection preventive member is disposed at the foremost end of a shaft for a work, the outside of a buffing wheel comes in contact with the disconnection preventive member, a tightening nut is threadably engaged with the buffing wheel, and the buffing wheel is tightly fixed to the shaft by displacing the tightening nut along the shaft. In addition, a surface treatment conducting method is practiced such that each surface treatment is conducted after a work is subjected to barrel buffing before or after the surface treatment. Additionally, a work supporting apparatus includes a buffing medium receiving container having a buffing medium received therein and a work supporting arm.
    Type: Application
    Filed: June 28, 1999
    Publication date: November 15, 2001
    Inventors: SHUJI KAWASAKI, AKITAKA MATSUSHITA
  • Publication number: 20010003699
    Abstract: A wet type buffing method is practiced such that a final buffing step is conducted in a buffing liquid having alkality and the remaining buffing steps are conducted in other buffing liquid having acidity. A work buffing apparatus is constructed such that a disconnection preventive member is disposed at the foremost end of a shaft for a work, the outside of a buffing wheel comes in contact with the disconnection preventive member, a tightening nut is threadably engaged with the buffing wheel, and the buffing wheel is tightly fixed to the shaft by displacing the tightening nut along the shaft. In addition, a surface treatment conducting method is practiced such that each surface treatment is conducted after a work is subjected to barrel buffing before or after the surface treatment. Additionally, a work supporting apparatus includes a buffing medium receiving container having a buffing medium received therein and a work supporting arm.
    Type: Application
    Filed: June 28, 1999
    Publication date: June 14, 2001
    Applicant: BBF YAMATE CORPORATION
    Inventors: SHUJI KAWASAKI, AKITAKA MATSUSHITA
  • Publication number: 20010003696
    Abstract: A wet type buffing method is practiced such that a final buffing step is conducted in a buffing liquid having alkality and the remaining buffing steps are conducted in other buffing liquid having acidity. A work buffing apparatus is constructed such that a disconnection preventive member is disposed at the foremost end of a shaft for a work, the outside of a buffing wheel comes in contact with the disconnection preventive member, a tightening nut is threadably engaged with the buffing wheel, and the buffing wheel is tightly fixed to the shaft by displacing the tightening nut along the shaft. In addition, a surface treatment conducting method is practiced such that each surface treatment is conducted after a work is subjected to barrel buffing before or after the surface treatment. Additionally, a work supporting apparatus includes a buffing medium receiving container having a buffing medium received therein and a work supporting arm.
    Type: Application
    Filed: September 15, 1997
    Publication date: June 14, 2001
    Applicant: BBF YAMATE CORPORATION
    Inventors: SHUJI KAWASAKI, AKITAKA MATSUSHITA