Patents by Inventor Donat L. St. Laurent

Donat L. St. Laurent 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).

  • Publication number: 20030029353
    Abstract: A floor connection casting for use in construction of railcar floor assemblies as well as a floor assembly and railcar using the same are provided. The floor connection casting preferably includes a plurality of stringer connectors coupled along one or more sides as well as at least one crossbearer connector on one end. By coupling a pair of floor connection castings to opposing side sills in a railcar, lateral support can be provided for one or more floor plates. Floor stringers may then be coupled between adjacent floor connections using the stringer connectors such that longitudinal support for a flooring is provided. The floor assembly may then be coupled to a railcar using a sill connector included on the end of the floor connection casting opposite the crossbearer connector to couple to a side sill of the railcar.
    Type: Application
    Filed: October 22, 2001
    Publication date: February 13, 2003
    Applicant: TRN Business Trust, a Delaware business trust
    Inventors: John W. Coulborn, Daryl C. Collings, Donat L. St. Laurent
  • Patent number: 5038687
    Abstract: A multipurpose railroad freight car suitable for carrying either bulk freight or granular freight. The floor of the freight car comprises a pair of opposed, reversible conveyors. Also disclosed is a transverse wiper bar to guide the granular freight along the floor of the freight car to a central discharge chute.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: August 13, 1991
    Assignee: Bethlehem Steel Corporation
    Inventors: Donat L. St. Laurent, James T. Brown