Patents by Inventor Stephen A. Logan

Stephen A. Logan 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).

  • Rail heating apparatus
    Patent number: 5004190
    Abstract: A rail heating system is provided for heating railroad components such as railroad switch areas and electrified third rails. The heating system includes a side heater having a heating pad that has a flexible contact surface. A clip arrangement such as a spring steel clip is provided for securing the heating pads to the stock rail and pressing the contact surface into engagement with the rail. The contact surface of the heating pad is forced to conform to the shape of the contacted portion of the rail. Ground pan heaters may be used to keep areas of the switch that are not suitable for attachment by the side heaters, such as the switch rod, free from ice and snow.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: April 2, 1991
    Assignee: Bylin Heating Systems, Inc.
    Inventors: Garry L. Montierth, Stephen A. Logan, Raymond J. Scott