Patents by Inventor Richard L. Petrovich

Richard L. Petrovich 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).

  • Method and apparatus for subsurface venting or injecting in liquid molding
    Publication number: 20020121719
    Abstract: A new and improved method and apparatus for liquid resin molding, using subsurface venting is described herein. The inserts can be placed virtually any where in the mold, and vacuum or injection can be introduced to suit the part geometry. The process is to draw the resin through the mold, thereby creating a uniform wetting effect of the fabric by the resin.
    Type: Application
    Filed: February 27, 2002
    Publication date: September 5, 2002
    Inventor: Richard L. Petrovich
  • Abrasive tool
    Patent number: 4730430
    Abstract: A relatively thin, hand-held tool for abrading, sanding or polishing a workpiece comprised of an elongated body constructed to carry a flexible, endless strip longitudinally therebout. The body includes handlike portion and a workpiece engaging portion, which define the path. Means associated with the handle portion are provided to align said strip with respect to the workpiece engaging portion. The body further includes means for releasably holding the strip under tension in contact with the path.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: March 15, 1988
    Inventor: Richard L. Petrovich
  • Hand held sander
    Patent number: D305400
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: January 9, 1990
    Inventor: Richard L. Petrovich