Patents by Inventor Erwin Roos

Erwin Roos 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).

  • Cutter insert for machining
    Patent number: 5006020
    Abstract: Cutter inserts are provided with a circumferential primary bevel whose width is between 0.05 to 0.2 mm and which has an angle of inclination downward from the top surface of between 20 and 35 degrees. The primary bevel is adjoined by a secondary bevel which has a width between 0.5 and 2.0 mm and an inclination downward from the top surface between 5 and 15 degrees. The primary bevel is at an angle .alpha. between 5 and 15 degrees with respect to the secondary bevel. At the corner radii the secondary bevel comes to an end and thereby forms the strengthened area.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: April 9, 1991
    Assignee: Feldmuehle Aktiengesellschaft
    Inventor: Erwin Roos