Patents by Inventor Daryl E. Waschek

Daryl E. Waschek 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).

  • Drill bit with deburring device
    Patent number: 3940214
    Abstract: A twist drill bit for drilling through metal and having a cutter recessed in the spiral portion of the drill auger and spring tensioned to be biased outwardly beyond the peripheral surface of the drill to remove burrs raised by the drill bit as it passes through the metal in either direction.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: February 24, 1976
    Inventor: Daryl E. Waschek