Patents by Inventor Naomi Tatebe

Naomi Tatebe 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).

  • Rotary cutting tool having corrugated cutting edge portion whose pitch and/or depth are/is increased with increase in diameter of body of the cutting tool
    Patent number: 6715966
    Abstract: A rotary cutting tool which is to be rotated about an axis thereof for cutting a workpiece, including: a generally cylindrical body portion having (a) at least one flute each of which is formed in the cylindrical body portion and each of which extends from an axially distal end of the cylindrical body portion toward an axially proximal end of the cylindrical body portion, and (b) at least one cutting edge each of which is provided by one of widthwise opposite edges of the flute, wherein each of at least one cutting edge includes a corrugated edge portion having a corrugated shape, and wherein at least one of a pitch and a depth of the corrugated shape is increased with an increase in a diameter of the cylindrical body portion whose outer circumferential surface is defined by a rotary trajectory of an envelope passing through crests of the corrugated shape.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: April 6, 2004
    Assignee: OSG Corporation
    Inventors: Kiyoshi Tsuzuki, Naomi Tatebe, Satoru Kamata
  • Rotary cutting tool having corrugated cutting edge portion whose pitch and /or depth are/is increased with increase in diameter of body of the cutting tool
    Publication number: 20020106252
    Abstract: A rotary cutting tool which is to be rotated about an axis thereof for cutting a workpiece, including: a generally cylindrical body portion having (a) at least one flute each of which is formed in the cylindrical body portion and each of which extends from an axially distal end of the cylindrical body portion toward an axially proximal end of the cylindrical body portion, and (b) at least one cutting edge each of which is provided by one of widthwise opposite edges of the flute, wherein each of at least one cutting edge includes a corrugated edge portion having a corrugated shape, and wherein at least one of a pitch and a depth of the corrugated shape is increased with an increase in a diameter of the cylindrical body portion whose outer circumferential surface is defined by a rotary trajectory of an envelope passing through crests of the corrugated shape.
    Type: Application
    Filed: January 25, 2002
    Publication date: August 8, 2002
    Applicant: OSG Corporation
    Inventors: Kiyoshi Tsuzuki, Naomi Tatebe, Satoru Kamata
  • Formed rotary cutting tool having varying diameter and constant clearance angle, and method of forming groove by using the same
    Patent number: 6164877
    Abstract: A formed rotary cutting tool including; a generally cylindrical body portion having (a) a plurality of flutes which are formed in the body portion to generally axially extend and which are located around the axis so as to be angularly spaced apart from each other, and (b) cutting edges which cooperate with each other to have a diameter that changes in the axial direction, so that the body portion has a desired configuration. The tool is rotated about the axis to form a groove whose configuration corresponds to the desired configuration, in a solid workpiece. Each of the cutting edges is defined by an intersection of a rake face and a flank face which has a predetermined clearance angle that is constant in the axial direction, irrespective of the change of the diameter.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: December 26, 2000
    Assignee: OSG Corporation
    Inventors: Satoru Kamata, Naomi Tatebe