Patents by Inventor Claus Strodthoff

Claus Strodthoff 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: 6688404
    Abstract: A portable handheld lawn edger includes a cutterhead (2) at the end (16) of a guide tube (4) as well as an internal combustion engine (3) at the other end (17). The engine is connected to the cutter blade (5) via a drive shaft (20) in the guide tube (4) and in the cutterhead (2). The cutter blade is mounted for rotation about an axis (6), which lies parallel to the ground during cutting operation, and is guided along the edge. A guide wheel (27) is provided on the end of the cutterhead (2) facing toward the engine (3). The cutterhead (2) can be rolled over the ground with the aid of the guide wheel (27). The service life of the edge cutter (1) is increased and the manufacturing costs are reduced in that the cutterhead (2) is provided with a spacer (7, 9) approximately at the elevation of the drive axis (6) of the cutter blade (5). The spacer (7, 9) projects from the cutterhead and is set on the ground and prevents abrasion of the cutterhead (2).
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 10, 2004
    Assignee: Andreas Stihl AG & Co.
    Inventors: Klaus-Martin Uhl, Heiko Rosskamp, Claus Strodthoff
  • Publication number: 20020166677
    Abstract: A portable handheld lawn edger includes a cutterhead (2) at the end (16) of a guide tube (4) as well as an internal combustion engine (3) at the other end (17). The engine is connected to the cutter blade (5) via a drive shaft (20) in the guide tube (4) and in the cutterhead (2). The cutter blade is mounted for rotation about an axis (6), which lies parallel to the ground during cutting operation, and is guided along the edge. A guide wheel (27) is provided on the end of the cutterhead (2) facing toward the engine (3). The cutterhead (2) can be rolled over the ground with the aid of the guide wheel (27). The service life of the edge cutter (1) is increased and the manufacturing costs are reduced in that the cutterhead (2) is provided with a spacer (7, 9) approximately at the elevation of the drive axis (6) of the cutter blade (5). The spacer (7, 9) projects from the cutterhead and is set on the ground and prevents abrasion of the cutterhead (2).
    Type: Application
    Filed: June 3, 2002
    Publication date: November 14, 2002
    Inventors: Klaus-Martin Uhl, Heiko Rosskamp, Claus Strodthoff