Patents by Inventor Siegmund A. Neuwirth

Siegmund A. Neuwirth 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).

  • Dental reducing tool
    Patent number: 4389192
    Abstract: A dental tool for reducing tooth structure includes a shaft adaptable to be carried by rotating means at one end thereof and a shank extending axially from the other end of the shaft. In one group of embodiments thereof, the shank has a plurality of non-intersecting grooves forming a plurality of reducing elements spaced along the length of the shank. Each of the grooves in axial cross-section of the shank has a rounded bottom wall while the reducing elements may have one of various configurations. In another group of embodiments thereof, the shank is helically grooved to define a reducing element with the crest thereof centered on the shank axis.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: June 21, 1983
    Inventor: Siegmund A. Neuwirth
  • Dental reducing tool
    Patent number: 4264307
    Abstract: A dental tool for reducing tooth structure includes a shaft adaptable to be carried by rotating means at one end thereof and a shank extending axially from the other end of the shaft. The shank has a plurality of non-intersecting grooves forming a plurality of reducing elements spaced along the length of the shank. Each of the grooves in axial cross-section of the shank has a rounded bottom wall while the reducing elements may have one of various configurations.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: April 28, 1981
    Inventor: Siegmund A. Neuwirth