Patents by Inventor Martin Gr/o/ nlund

Martin Gr/o/ nlund 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: 4471175
    Abstract: In a rail-bound vehicle which has a vehicle body which can be tilted in relation to supporting bogies when travelling along curved track sections, a current collector for collecting electric current from an overhead contact line is arranged on transverse guides on the roof of the vehicle body, so that it may be displaced in the lateral direction in relation to the roof upon tilting of the vehicle body. The position of the current collector relative to the vehicle body and the overhead contact line is determined by a mast fixed to one of the supporting bogies, which mast is flexibly connected to the current collector.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: September 11, 1984
    Assignee: Asea Aktiebolag
    Inventor: Martin Gr/o/ nlund