Railway switches and signals – Train-position indication – Miniature model
Reexamination Certificate
2006-09-20
2009-11-17
Le, Mark T (Department: 3617)
Railway switches and signals
Train-position indication
Miniature model
C246S125000, C246S292000, C246S293000, C701S019000
Reexamination Certificate
active
07618010
ABSTRACT:
In a railroad crossing warning system having an electronic transmitter located on a first side of a road crossing connected across both railway rails, a first electronic receiver on the first side of the road crossing connected across both railway rails, a second electronic receiver on the second side of the road crossing connected across both railway rails, a method for determining direction a vehicle is traveling, the method including monitoring a voltage profile from at least one of the first receiver and the second receiver, as a vehicle moves along the railway rails towards the road crossing, and determining a direction the vehicle is moving based on the voltage profile.
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Beusse Wolter Sanks Mora & Maire, P.A.
General Electric Company
Le Mark T
Sanks, Esq. Terry M.
Wawrzyn, Esq. Robert
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