Patents by Inventor Janusz Ledzinski

Janusz Ledzinski 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: 6673431
    Abstract: The invention relates to a hand-rail that can be used for escalators, moving pavements. The inventive hand-rail has a C-shaped cross-section, outer layers in the form of a sliding layer and a rubber top layer for the user, a layer with tractive support elements, especially steel chords that are embedded in rubber and oriented in a longitudinal direction, and at least one respective reinforcing layer extending into the lip areas on both sides of the tractive support elements. At least one of the reinforcing layers consists of a rubber layer with homogeneously distributed short fibers with a preferred orientation, extending at an angle deviating from 0° in relation to the longitudinal direction of the hand-rail.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: January 6, 2004
    Assignee: Semperit Aktiengesellschaft Holding
    Inventor: Janusz Ledzinski