Patents by Inventor Adolf Ratz

Adolf Ratz 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).

  • Patent number: 4088047
    Abstract: A method of producing cutting teeth for a chain saw each of which has a tooth roof and a base body cranked relative to the tooth roof along a substantially sharp edge. The method includes using as starting material a flat band which at least on one flat side of the flat band has a ridge-shaped projection extending in the longitudinal direction of the flat band. The method further includes cutting the band transverse to its longitudinal axis into sections so that each section has an overall size just sufficient for the formation of a cutting tooth to be formed, while the ridge-shaped projection divides each section into a shorter end portion and a longer end portion. The shorter end portion is bent to form the tooth roof, and the longer end portion is provided with a crank relative to the tooth roof.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: May 9, 1978
    Assignee: Andreas Stihl Maschinenfabrik
    Inventors: Adolf Ratz, Adolf Wilhelm, Gerhard Odenwald, Siegfried Frank, Walter Stark
  • Patent number: 3987543
    Abstract: A portable motor chain saw with a guiding rail structure which on at least a portion of its circumferential surface on which the saw chain is slidably guided has a semicircular head by which the chain is deviated while a reinforcing layer of Stellite is applied on the region of the deviating portion of the guiding rail structure, the Stellite together with the adjacent guiding rail portion being tempered.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: October 26, 1976
    Assignee: Andreas Stihl Maschinenfabrik
    Inventors: Adolf Ratz, Robert Schafer