Railway rolling stock – Trucks – Bogie
Reexamination Certificate
2005-05-24
2005-05-24
Le, Mark T. (Department: 3617)
Railway rolling stock
Trucks
Bogie
C105S198200, C105S198400, C105S198500
Reexamination Certificate
active
06895866
ABSTRACT:
An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has trucks that have multiple dampers in a four corner arrangement in the sideframes. The spring groups in the side frames are relatively soft, giving a low vertical bounce natural frequency. In an articulated embodiment, differentially placed ballast is mounted in a biased arrangement to load the coupler end trucks to encourage a dynamic response similar to the dynamic response of the internal trucks.
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