Patents by Inventor Jayanta Hazra

Jayanta Hazra 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: 4411565
    Abstract: A finishing insert for use with an indexable cutting tool is formed from a flat wafer of cutting material which is generally polygonal in plan form and includes a pair of opposed faces and a plurality of upstanding side walls extending therebetween. The juncture of the side walls with each face defines the cutting edges of the insert. The polygonal insert includes a plurality of radiused corner portions and is provided with at least one non-planar insert face wherein the corner portions thereof slope inwardly towards the opposed face of the insert. Each corner portion further includes a pair of generally triangular chip grooves separated by a planar central triangular land area. Each chip groove is spaced from the peripheral cutting edge of the insert to define a side land area which increases in width from the corner portion to its opposed end. In addition each chip groove increases in both width and depth from the corner portion to its opposed end.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: October 25, 1983
    Assignee: General Electric Company
    Inventors: Jayanta Hazra, Sazzadul Haque
  • Patent number: 4359300
    Abstract: A cutting insert for use with an indexable cutting tool is formed from a flat wafer of cutting material which is generally polygonal in plane form and includes a pair of opposed faces and a plurality of upstanding side walls extending therebetween. The juncture of the side walls with each face defines the cutting edges of the insert. The polygonal insert which includes a plurality or radiused corner portions, is provided with at least one nonplanar insert face wherein the corner portions thereof slope inwardly towards the opposed face of the insert. Each corner portion further includes a pair of generally triangular chip grooves separated by a raised central triangular land area. Each chip groove is spaced from the peripheral cutting edge of the insert to define side land areas which increase in width from the corner portion to their opposed ends. The chip grooves increase in both width and depth from the corner portions to their opposed ends.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: November 16, 1982
    Assignee: General Electric Co.
    Inventors: Jayanta Hazra, Sazzadul Haque