Electronic code follower relay
US7357359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2003/228
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.