Patents by Inventor Walter C. Willis

Walter C. Willis 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).

  • Garden tool
    Patent number: 4892156
    Abstract: A garden tool for cultivating and tilling garden soil has a cultivating blade secured at one end of an elongated handle. The cultivating blade is formed by a plurality of sequential adjacent connected teeth, each formed by a pair of perpendicular facets intersecting at a ridge line. The leading edge of each of the facets is grounded to a sharpened cutting edge. In use, the cultivating blade is pushed forward and downward into the surface of the soil and subsequently pulled back. This reciprocating movement is repeated and tills the ground in a shaving or plowing action.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: January 9, 1990
    Inventor: Walter C. Willis