Patents by Inventor Friedrich Wiegand

Friedrich Wiegand 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).

  • Fastening an attaching eye to the base of a dashpot
    Patent number: 6572008
    Abstract: Fastening an attaching eye to the base of a dashpot by welding. The object is to simplify tooling and position the parts more accurately. The eye (3) is fabricated from strip, preferably by rolling or bending, prior to welding and is provided with an outward-tapering V-shaped abutment (4). The base (1) is provided with a transverse W-shaped groove comprising two rounded depressions (5 & 6), their depths and middle elevations (7) dimensioned to ensure that the eye will come into contact with the lateral edges (8 & 9) of the groove. The abutment is more or less in alignment with the groove's elevation.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 3, 2003
    Assignee: Krupp Bilstein GmbH
    Inventor: Friedrich Wiegand
  • Fastening an attaching eye to the base of a dashpot
    Publication number: 20020066772
    Abstract: Fastening an attaching eye to the base of a dashpot by welding. The object is to simplify tooling and position the parts more accurately. The eye (3) is fabricated from strip, preferably by rolling or bending, prior to welding and is provided with an outward-tapering V-shaped abutment (4). The base (1) is provided with a transverse W-shaped groove comprising two rounded depressions (5 & 6), their depths and middle elevations (7) dimensioned to ensure that the eye will come into contact with the lateral edges (8 & 9) of the groove. The abutment is more or less in alignment with the groove's elevation.
    Type: Application
    Filed: November 28, 2001
    Publication date: June 6, 2002
    Inventor: Dipl.-Ing. Friedrich Wiegand
  • Hydraulic dashpot for motor vehicles
    Patent number: 5409087
    Abstract: A hydraulic dashpot for motor vehicles. It has a cylinder that accommodates a fluid. A shock-absorbing piston travels back and forth in the cylinder and divides it into two displacement chambers. The piston is connected to a rod that extends through a centering component at one end of the cylinder. A hydraulic decompression-stroke limiter consists of a cup-shaped recess below the rod-centering component and of another piston on the piston rod above the shock-absorbing piston. Channels extend through the stroke-limiting piston and are blocked off in the decompression-stroke direction. The object is a less expensive dashpot. The stroke-limiting piston consists of a thin stroke-limiting disk with a diameter slightly shorter than the critical diameter of the recess and resting on a thicker support.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: April 25, 1995
    Assignee: August Bilstein GmbH & Co. KG
    Inventors: Rolf Angermann, Reinhard Holscher, Volker Hansemann, Berthold Kolz, Walter Theobald, Friedrich Wiegand