Patents by Inventor Nathan J. Reese

Nathan J. Reese 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).

  • Three-piece motion control truck system
    Patent number: 7174837
    Abstract: An improved three-piece truck system for railroad cars provides long travel side bearings for improved stability, a “wide” friction shoe design or equivalent to improve sideframe and bolster squareness, a resilient pedestal pad for improved curving performance and enhanced wear resistance, and a suspension system tuned and optimized for rail cars to have a minimum reserve capacity of less than 1.5 to improve motion control and ride quality, increase resistance to suspension bottoming, and increase hunting threshold speed. Such a motion control truck system is able to meet recent, more stringent American Association of Railroads standards, such as M-976, for railcars having a 286,000 lb. gross rail load rating.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: February 13, 2007
    Assignee: ASF-Keystone, Inc.
    Inventors: Thomas R. Berg, Nathan J. Reese, Ralph H. Schorr, Jeffrey M. Ruback, Julius I. Pershwitz
  • Multi-purpose universal sideframe for railway trucks
    Patent number: 7017498
    Abstract: An improved sideframe has a bolster opening configured to accept a variety of spring group and friction shoe assembly designs. The bolster opening is defined by a bottom section, a top compression member, and two opposing column members and has two column wear plates each secured to the opposing column members. The bottom section of the bolster opening defines a spring seat. The dimensions of the bolster opening of the sideframe allow for a variety of freight car truck suspension systems including the spring group, bolster and friction shoe used therewith.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: March 28, 2006
    Assignee: ASF-Keystone, Inc.
    Inventors: Thomas R. Berg, Nathan J. Reese, Jeffrey M. Ruback
  • Multi-purpose universal sideframe for railway trucks
    Publication number: 20040261651
    Abstract: An improved sideframe has a bolster opening configured to accept a variety of spring group and friction shoe assembly designs. The bolster opening is defined by a bottom section, a top compression member, and two opposing column members and has two column wear plates each secured to the opposing column members. The bottom section of the bolster opening defines a spring seat. The dimensions of the bolster opening of the sideframe allow for a variety of freight car truck suspension systems including the spring group, bolster and friction shoe used therewith.
    Type: Application
    Filed: June 1, 2004
    Publication date: December 30, 2004
    Applicant: ASF-KEYSTONE, INC.
    Inventors: Thomas R. Berg, Nathan J. Reese, Jeffrey M. Ruback
  • Three-piece motion control truck system
    Publication number: 20040261652
    Abstract: An improved three-piece truck system for railroad cars provides long travel side bearings for improved stability, a “wide” friction shoe design or equivalent to improve sideframe and bolster squareness, a resilient pedestal pad for improved curving performance and enhanced wear resistance, and a suspension system tuned and optimized for rail cars to have a minimum reserve capacity of less than 1.5 to improve motion control and ride quality, increase resistance to suspension bottoming, and increase hunting threshold speed. Such a motion control truck system is able to meet recent, more stringent American Association of Railroads standards, such as M-976, for railcars having a 286,000 lb. gross rail load rating.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 30, 2004
    Applicant: ASF-KEYSTONE, INC.
    Inventors: Thomas R. Berg, Nathan J. Reese, Ralph H. Schorr, Jeffrey M. Ruback, Julius I. Pershwitz