Patents by Inventor Robert Jacob Hinke

Robert Jacob Hinke 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).

  • Hole Boring Tool
    Publication number: 20090090560
    Abstract: The invention is related to a hole boring tool having a cylindrical sleeve, a piston assembly and the seal located on the piston assembly. The piston assembly is formed of a piston, a neck extending backward from the piston, and a handle extending backward from the neck. The seal is located on an outer surface of the piston and is in contact with an inner surface of the cylindrical sleeve.
    Type: Application
    Filed: September 2, 2008
    Publication date: April 9, 2009
    Inventor: Robert Jacob Hinke