Patents by Inventor Blease M. Matthews

Blease M. Matthews 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).

  • Spotting drill and milling cutter
    Patent number: 6220795
    Abstract: A spotting drill and milling cutter (10) having a shank (30) and a pocket (50) for receiving an insert (52). The cutter is capable of forming a spotting hole (12) having a concentric circular cavity (16) at the bottom of the spotting hole. Insert (52) includes a primary cutting edge (54), a secondary cutting edge (64) and a tertiary edge (68) having a cutting portion (68a). The primary cutting edge terminates at a point (56) which is radially offset about 0.001″ to 0.100″ with respect to rotation axis (36) of the cutter. Primary radial relief surface (76) associated with the primary cutting edge and secondary radial relief surface (78) associated with the secondary cutting edge are provided to reduce back dragging relative to the primary and secondary cutting edges.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: April 24, 2001
    Assignee: Vermont Indexable Tooling, Inc.
    Inventor: Blease M. Matthews
  • Hole shaping cutter
    Patent number: D297804
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: September 27, 1988
    Assignee: Tri Tech U.S.A., Inc.
    Inventor: Blease M. Matthews
  • Hole shaping cutter
    Patent number: D317396
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: June 11, 1991
    Assignee: Tri Tech, U.S.A., Inc.
    Inventors: George F. Bacigalupo, Joseph G. Bacigalupo, Blease M. Matthews