Steven L Lynch

US Patent:

20050258313, Nov 24, 2005

Filed:

Apr 29, 2005

Appl. No.:

11/117451

Inventors:

Thomas Yerge - Dundalk MD, US
Steven Lynch - St. Clair Shores MI, US

Assignee:

Phase2 Concepts, Inc. - St. Clair Shores MI

International Classification:

B61L021/00

US Classification:

2460340CT

Abstract:

An electronic code following relay for use in a railroad signaling system includes a timing circuit for receiving an input square wave signal coded at a pre-determined code rate, and regenerating the input square wave signal at the pre-determined code rate after a predetermined time delay; and a driving circuit coupled to the timing circuit for receiving the delayed square wave signal therefrom and conducting, at the predetermined code rate, at least a power source to at least one of various components in the railroad signaling system including a rail of a track. The electronic code following relay is preferably microprocessor-based and uses an opto-coupler and various solid-state relays for conducting various DC and AC power sources to the components of the railroad signaling system.