Patents by Inventor James Thomas Dewberry

James Thomas Dewberry 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).

  • Parking brake reset mechanism for railway vehicles
    Patent number: 9751513
    Abstract: A parking brake reset system for a railway vehicle, such as a transit vehicle, includes a brake operating unit fluidly connected to a main air reservoir and controlling air flow to a brake cylinder of the railway vehicle, a brake pipe, a parking brake, and a control valve in line between the brake pipe and the parking brake to establish fluid communication between the brake pipe and the parking brake. The control valve is in line between the brake operating unit and the parking brake, whereby the control valve controls air flow to the parking brake from the main air reservoir and the brake pipe. The control valve may be a double check valve or a 3-way cutout valve, as examples.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 5, 2017
    Assignee: Wabtec Holding Corp.
    Inventors: James Thomas Dewberry, Robert Norman Scharpf
  • Parking Brake Reset Mechanism for Railway Vehicles
    Publication number: 20140262640
    Abstract: A parking brake reset system for a railway vehicle, such as a transit vehicle, includes a brake operating unit fluidly connected to a main air reservoir and controlling air flow to a brake cylinder of the railway vehicle, a brake pipe, a parking brake, and a control valve in line between the brake pipe and the parking brake to establish fluid communication between the brake pipe and the parking brake. The control valve is in line between the brake operating unit and the parking brake, whereby the control valve controls air flow to the parking brake from the main air reservoir and the brake pipe. The control valve may be a double check valve or a 3-way cutout valve, as examples.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Wabtec Holding Corp.
    Inventors: James Thomas Dewberry, Robert Norman Scharpf