ALEXANDRIA, Va., Oct. 21 -- United States Patent no. RE51,084, issued on Oct. 20, was assigned to RAILWARE INC. (Hauppauge, N.Y.).

"Tools for railway traffic control" was invented by Ross Pirtle (Commack, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Tools (such as system, apparatus, methodology, etc.) may be provided to control traffic over a railway track section, when a railway worker is working on or near the track section. Move More particularly, when traffic over the track section is to be blocked, a release code is generated and sent to an electronic contact address of the railway worker. Traffic through the track section is blocked until the release code is entered in the system."

The patent w...