Patents by Inventor Arturo A. O. Rivas

Arturo A. O. Rivas 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).

  • Interchangeable insert for railroad switches
    Patent number: 5303884
    Abstract: The invention relates to a manganese steel insert to a railroad track switch point of the type designed to have a planar coupling system within both the web of the rail and the switch point of the insert, instead of the conventional curved coupling surface in use at the present. This is achieved by means of an attachment of the same material as the insert (or other steel) on the insert contact surfaces, thus achieving precision plane surfaces during the machining phase.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: April 19, 1994
    Inventor: Arturo A. O. Rivas