The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2015
Filed:
Nov. 18, 2009
Francois Pretorius, Paonia, CO (US);
David L. Hill, Prospect, KY (US);
Lawrence Deloss Lowe, Iii, Louisville, KY (US);
Charles A. Wisniewski, Rancho Cucamonga, CA (US);
Francois Pretorius, Paonia, CO (US);
David L. Hill, Prospect, KY (US);
Lawrence Deloss Lowe, III, Louisville, KY (US);
Charles A. Wisniewski, Rancho Cucamonga, CA (US);
Convergent Communications, Inc., Paonia, CO (US);
Abstract
A method and system for verifying trackside conditions in safety critical railroad applications by reporting the status of trackside signals and switches to a remote train control system. The system comprises at least one sensor for providing trackside conditions electrically connected to a circuit for providing trackside conditions to a railroad, said sensor being powered by voltage applied to the circuit such that the sensor is energized only when said electrical component is engaged. The system and method further comprises a method and system which is failsafe and which enables the control system to independently verify signals from each sensor.