Patents by Inventor Robert A. Colombo

Robert A. Colombo 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).

  • Railway locomotive brake control system
    Patent number: 4660895
    Abstract: A railway locomotive brake control system that substitutes a part of a standard freight car brake control valve and interconnected pilot valves and other readily available components to provide the operating functions of the usual specially designed freight locomotive brake valve at a reduced cost. Systems without and with types I or II dynamic brake interlocks are illustrated.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: April 28, 1987
    Assignee: General Motors Corporation
    Inventors: Wayne E. Chlumecky, John H. Cryder, Robert A. Colombo, Robert E. Spenk