Patents by Inventor Laszlo Vilmanyi

Laszlo Vilmanyi 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).

  • Thread tapping cutting tool
    Patent number: 5725336
    Abstract: A thread tapping cutting tool includes a working part with a chamfer portion, control portion, and at least two thread cutting wings (separated by flutes) formed therein. The chamfer portion is at least one half of the length of the working part. Each of the two or more thread cutting wings has a width of not more than 0.2 times a tap drill outer diameter of the working part, and not less than 0.02 times the tap drill outer diameter. The chamfer portion has plane surface lands on the cutting wings at the outer edge, and a relief angle of the plane surface lands is greater than 5 degrees. The core diameter of the cutting wings is defined by the depth of the flutes, and is not more than 0.35 times the tap drill outer diameter.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: March 10, 1998
    Inventors: Laszlo Vilmanyi, Laszlone Vilmanyi, Gabor Vilmanyi, Janos Simon