Patents by Inventor Earl D. Ervay

Earl D. Ervay 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).

  • Full point width cutting blades
    Patent number: 8267624
    Abstract: A cutting blade for face milling wherein the cutting blade is constructed to cut a predetermined final dimension of a tooth slot along a portion of the cutting end (i.e. the primary cutting edge portion) of the blade and to cut the remainder of the tooth slot at an amount less that the predetermined final dimension of the tooth slot along the remaining portion (i.e. the secondary cutting edge portion) of the cutting end. The construction of the inventive cutting blade provides sharing of the cutting load amongst the blade cutting edges and also provides sufficient clearance in the tooth slot whereby the cutting blade can be repositioned to allow truing of the cutter, particularly with respect to the primary portion.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: September 18, 2012
    Assignee: The Gleason Works
    Inventors: Reinhardt Ritter, Uwe Gaiser, Earl D. Ervay
  • Manufacturing straight bevel gears
    Patent number: 7364391
    Abstract: A method and tool arrangement for producing straight bevel gears and the like on a multi-axis computer controlled machine wherein a single tool is utilized in the machining process.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 29, 2008
    Assignee: The Gleason Works
    Inventors: Hermann J. Stadtfeld, Uwe Gaiser, Earl D. Ervay, Theodore J. Krenzer
  • MANUFACTURING STRAIGHT BEVEL GEARS
    Publication number: 20080085166
    Abstract: A method and tool arrangement for producing straight bevel gears and the like on a multi-axis computer controlled machine wherein a single tool is utilized in the machining process.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 10, 2008
    Inventors: Hermann J. Stadtfeld, Uwe Gaiser, Earl D. Ervay, Theodore J. Krenzer
  • Process for producing face hobbed bevel gears with toe relief
    Patent number: 5114287
    Abstract: A method of forming a relief at the toe end of the teeth on a bevel gear is disclosed. The width of the blades that cut the longitudinally extending convex or concave profiles of the flanks of the teeth is increased to a dimension greater than the width of the tooth slot at the toe end whereby additional stock is removed from the toe end of the flank opposite the flank being cut by the blades. The relief is formed at the toe end of each tooth with the relief being on the same flank profile for all teeth. Lapping interference is eliminated. A separate chamfering operation is not required.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: May 19, 1992
    Assignee: The Gleason Works
    Inventors: Earl D. Ervay, Mark J. Boch