Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1993-09-14
1995-08-22
Huppert, Michael S.
Material or article handling
Self-loading or unloading vehicles
Conveyor
414339, B60P 143
Patent
active
054433533
ABSTRACT:
A deployable and retractable ramp assembly is mounted on a flatbed railroad car to allow railroad equipment to be moved to and from tracks. The ramp assembly comprises four ramp sections pivotally connected to each other and in a retracted position in a Z-folded configuration. Each ramp section comprises a pair of rectangular tubes or railroad rails spaced by cross-braces a distance equal to the spacing of wheels of a railroad car on the same axle. Two masts are pivotally connected to the railroad car and can be locked in a substantially upright position, with first and second sheaves on the top end of each mast engaging a cable connected to a winch. A third winch connected by a third cable to the ramp sections applies a restraining force to preclude the ramp sections from moving too quickly under the force of gravity once moved past center during deployment.
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Huppert Michael S.
Keenan James W.
Lincoln Industries Corp.
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