Patents by Inventor Gerd Frers

Gerd Frers 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: 4127098
    Abstract: Disclosed is a starting device for an internal combustion engine having a stationary bearing axle attached to the engine, a pulley rotatably mounted on the axle and adapted for accepting a starting rope wrapped thereabout, a recessed coupling attached to the drive shaft of the engine, coaxially surrounding the rope pulley in its recess and having a plurality of inwardly facing ratchet teeth.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: November 28, 1978
    Assignee: Firma Andreas Stihl
    Inventors: Gerd Frers, Hans Nickel, Klaus Henning
  • Patent number: 4026020
    Abstract: A guiding rail arresting device for motor driven hand saws, especially motor chain saws, in which a sword-shaped guiding rail provided with a guiding groove extending in the longitudinal direction of the guiding rail is adapted to be clamped transverse to the plane of said rail against an abutment having associated therewith a counter guiding member for cooperation with the flanks of the guiding groove. The counter guiding member for at least one of the groove flanks is formed by a supporting element adapted when clamping the rail against the abutment automatically to be clamped against the groove flank.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: May 31, 1977
    Assignee: Andreas Stihl Maschinenfabrik
    Inventors: Klaus Hoppner, Gotz Landwehr, Adolf Wilhelm, Wolfgang Meyer, Gerd Frers, Rolf Lohberg, Dieter Reiff, Karl Forderer, Helmut Kosiollek
  • Patent number: 4016964
    Abstract: A rotor for a centrifugal clutch which rotor is designed as an axially laminated packet and is provided with a central supporting element carrying at least two circular segmental centrifugal weights respectively having one end thereof connected to the supporting element by an elastic supporting member.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: April 12, 1977
    Assignee: Andreas Stihl Maschinenfabrik
    Inventors: Gunter Dietzsch, Gerd Frers, Klaus Henning, Helmut Lux
  • Patent number: 3938633
    Abstract: A motor chain saw in which serially arranged clutches are interposed between the motor output shaft and the chain of the saw. The clutches include a centrifugal clutch and a mechanically controlled clutch. The mechanically controlled clutch has at least one drive element having an engaged position and a disengaged position and is acted on by centrifugal force urging it toward the position which it occupies. A spring urges the device element toward engaged position with a force less than the centrifugal force which acts on the drive element above a certain speed. The mechanically controlled clutch includes at least one control operable to move the drive element in at least disengaging direction during rotation of the clutch.
    Type: Grant
    Filed: February 14, 1973
    Date of Patent: February 17, 1976
    Assignee: Andreas Stihl Maschinenfabrik
    Inventors: Gunter Dietzsch, Gerd Frers, Dieter Wieland