Electronic blue flag system

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United States of America Patent

PATENT NO 9580094
SERIAL NO

14801237

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A system and a control system for selectively preventing movement of a locomotive is disclosed. The control system may comprise a plurality of access control devices for the locomotive, with each access control device including a status indicator, and being configured to activate or deactivate the status indicator based on user input received by any of the plurality of access control devices. Each access control device may also be configured to transmit status data indicative of a status of the locomotive to a locomotive controller, with the status either being a blue flag status or a ready status, wherein at least one of the access control devices is a mobile device not mounted to the locomotive.

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Patent Owner(s)

Patent OwnerAddress
PROGRESS RAIL LOCOMOTIVE INC9301 W 55TH ST LAGRANGE IL 60525

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Seaton, James David Westmont, US 26 124
Shubs,, Jr Alexander Chicago, US 35 218

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