Patents by Inventor David M. Hray

David M. Hray 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).

  • Gear hobbing cutter system
    Patent number: 7059810
    Abstract: A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: June 13, 2006
    Assignee: Kennametal Inc.
    Inventors: Mark A. Francis, David M. Hray
  • Gear hobbing cutter system
    Publication number: 20030198524
    Abstract: A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 23, 2003
    Inventors: Mark A. Francis, David M. Hray
  • Gear hobbing cutter system
    Patent number: 6609858
    Abstract: A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system. A deformable area is provided between the cartridge-receiving slot and the cutter head body. The deformable area includes a flex area for controlling an amount of deformation of the deformable area when a clamping member bears against a clamping pad.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: August 26, 2003
    Assignee: Kennametal Inc.
    Inventors: Mark A. Francis, David M. Hray