Patents by Inventor Robert W. Haining

Robert W. Haining 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).

  • Radio communication system for use in tunnels
    Patent number: 6041216
    Abstract: A radio communications system is intended for use by trains in a tunnel. This system includes an antenna subsystem which incorporates a radiating coaxial cable disposed along the length of the tunnel and extending beyond the portals thereof, including surface coverage for transition. Plural bi-directional, in-line amplifiers are inserted along the length of the radiating coaxial cable at predetermined intervals for amplifying the RF signals carried by the radiating coaxial cable. A monitoring repeater and a control repeater are provided along with an interface for joining the two repeaters to the radiating coaxial cable. A monitoring subsystem includes an end-of-train device and a head-of-train device.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: March 21, 2000
    Assignee: Tunnel Radio of America, Inc.
    Inventors: Mark D. Rose, Robert W. Haining