Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2008-06-17
2008-06-17
Crosland, Donnie L (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S539100, C340S539110, C340S429000, C340S545300, C340S689000, C340S547000, C200S06145M, C200S061520, C200S061830, C701S019000, C246S18700R, C246S292000, C246S47300R
Reexamination Certificate
active
07388483
ABSTRACT:
A wireless position sensing device is provided for monitoring railyard equipment status. The device comprises a gravity sensing mechanism for sensing an angular displacement with respect to a substantially vertical line, and for generating a displacement signal upon sensing a change in angular displacement exceeding approximately 40 degrees. A processing mechanism, operatively coupled to the gravity sensing mechanism, receives the displacement signal. A radio frequency transmitter, responsive to the processing mechanism, transmits a data signal indicative of the angular displacement. The processing mechanism is programmed to activate the radio frequency transmitter upon receipt of the displacement signal. The gravity sensing mechanism is affixed, attached, or mechanically coupled to railyard equipment comprising at least one of a manually operated rail switch or a safety indicator.
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Denny et al., “Communications-Based Yard Control (CB:YCTM) System”, Proceedings of the 2000 ASME/IEEE Joint Railroad Conference, Newark, NJ, Apr. 4-6, 2000, pp. 95-110, XP000975081.
PCT international Search Report dated Feb. 4, 2008.
Andarawis Emad Andarawis
Bhotika Rahul
Davenport David Michael
Hershey John Erik
Mitchell Robert James
Crosland Donnie L
General Electric Company
McClintic Shawn A.
Powell, III William E.
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