Company Filing History:
7 out of 786 
2 out of 19 
1 out of 16,338 
Years Active: 1979-1992
Title: Innovations by John W Parker in Railroad Safety
Introduction
John W Parker is a notable inventor based in Rochester, NY, who has made significant contributions to the field of railroad safety. With a total of 10 patents to his name, Parker has focused on developing innovative systems that enhance the safety and efficiency of railroad crossings.
Latest Patents
One of Parker's latest patents is a highway crossing control system for railroads utilizing communications technology. This system allows crossing protection equipment, such as warning lights and gates, to be controlled directly from the train locomotive. The train enters into an interchange of messages via a radio link with the controller at the crossing. If communication is not established before the train reaches a safe braking distance, the brakes are automatically applied, preventing the train from entering the crossing. The communication process is initiated when the locomotive passes a trackside beacon transponder located beyond a safe braking distance. The crossing controller acknowledges the train's signal, and the interchange of messages can be repeated to ensure efficient traffic flow across the crossing. Vital communications logic is employed to activate safety measures or set alarms in case of errors or failures.
Career Highlights
Throughout his career, John W Parker has worked with prominent companies such as General Signal Corporation and General Railway Signal Corporation. His work has focused on improving safety measures in the railroad industry, particularly at crossings where accidents can occur.
Collaborations
Parker has collaborated with notable individuals in his field, including William A Petit and Zalmai Shahbaz. Their combined expertise has contributed to the development of innovative safety solutions in railroad operations.
Conclusion
John W Parker's contributions to railroad safety through his innovative patents demonstrate his commitment to enhancing the safety of train crossings. His work continues to influence the industry and improve safety measures for both trains and vehicles at crossings.