Patents by Inventor Ewald Grundler

Ewald Grundler 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 of regenerating lawn surfaces
    Patent number: 4133274
    Abstract: A wheel supported chassis has a motor driving it intermittently across a lawn or turf surface for predetermined distances between cycles, a rotary drilling means drills holes in the turf area while the apparatus is stationary, a collecting platform feeds tubular plugs from an upper elevation to a transport wheel which positions a plug carried in a tubular container over a drilled hole, a cylinder for reciprocating the drilling means also effects pushing of the plug into the drilled hole with the plug being removed from a tubular container and the cycle being repeated as the apparatus traverses a desired work area.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: January 9, 1979
    Assignee: Wolf-Gerate GmbH
    Inventors: Gunther Orth, Rudolf Pietsch, Ewald Grundler