Patents by Inventor Berthold Lamert

Berthold Lamert 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).

  • Rotational frequency sensing device with pulse generating wheel having two-axial position supporting sleeve
    Patent number: 5668426
    Abstract: A pulse generating wheel, combined with a radial shaft sealing ring, for a machine element that can rotate about an axis. The pulse generating wheel has a cylindrical sleeve that can be slid onto the machine element. The radial shaft sealing ring is provided with a sealing lip, made of polymer material, that is delimited on the side facing the atmosphere by a conical surface. In a first axial position of the cylindrical sleeve, the conical surface is contacted by the cylindrical sleeve and can be expanded in the radial direction. The cylindrical sleeve can be displaced out of the first axial position into a second axial position in which the sealing lip moves into direct contact with the machine element, and the cylindrical sleeve is at an axial distance from the conical surface.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: September 16, 1997
    Assignee: Firma Carl Freudenberg
    Inventors: Berthold Lamert, Wolfgang Schmitt, Hans-Gerd Eckel