Patents by Inventor Emlyn N. Smith

Emlyn N. Smith 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).

  • Insert having a surface of carbide particles
    Patent number: 5131481
    Abstract: An insert for insertion into a bore opening formed within a working face of a tool and a method of making the same. The insert includes a head having an integral body adapted for insertion into the bore. The insert has carbide particles adhered to the insert surface to resist removal of the insert from the bore opening.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: July 21, 1992
    Assignee: Kennametal Inc.
    Inventor: Emlyn N. Smith
  • Sintered cemented carbide body coated with three layers
    Patent number: 4035541
    Abstract: A triple coated cemented hard metal carbide product in which a cemented metal carbide substrate is coated with, first, a metal carbide coating, in such a manner so as to create a carbon deficient area in the substrate, then, a metal carbo-nitride and, finally, a metal nitride coating so as to take advantage of the metal carbide and metal nitride properties in order to protect the cemented metal carbide substrate from corrosive atmospheres and abrasion due to frictional wear.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: July 12, 1977
    Assignee: Kennametal Inc.
    Inventors: Emlyn N. Smith, Louis F. Pochet