Patents by Inventor Patrick G. Welsh

Patrick G. Welsh 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).

  • Powered railway car steering assembly
    Patent number: 4135456
    Abstract: A railway car includes a central steering axle transversely movable on the car body in response to track curvature. Actuating members connected to the transversely movable axle include longitudinally extensible and retractable elements which steer end axle assemblies about vertical pivot axes, the actuating members and associated elements including helical gearing.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: January 23, 1979
    Assignee: Pullman Incorporated
    Inventor: Patrick G. Welsh