Patents by Inventor Rolf Hartan

Rolf Hartan 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: 5516142
    Abstract: A buggy with a collapsible frame, comprising a sliding tube with a buggy handle, a buggy scissors part parallel to the sliding tube, a frame scissors part and a seat tube linked in an articulated fashion to the frame scissors part and the sliding tube, as well as a friction bearing, at which the ends of the frame scissors part is supported in an articulated fashion, the ends of the buggy scissors part is supported rigidly and the sliding tube is supported so that it can be shifted in a sliding fashion, and having a back rest, side armrests with a play frame and a pivotable footrest and spring-suspended wheels, which can be swiveled freely at least partly about a vertical axis as well as having essentially L-shaped buggy handles, which are parallel to one another in the normal driving position, wherein the buggy handles are mounted on the sliding tubes so that they can be pulled out in telescopic fashion and can be fixed by a locking sleeve in a plurality of pull-out positions.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: May 14, 1996
    Assignee: J. G. Hartan Kinderwagenwerk
    Inventor: Rolf Hartan