Railway rolling stock – Car framing and structure – Freight
Reexamination Certificate
2000-04-19
2002-01-08
Morano, S. Joseph (Department: 3617)
Railway rolling stock
Car framing and structure
Freight
C105S396000, C052S045000, C052S051000, C052S052000, C052S053000
Reexamination Certificate
active
06336411
ABSTRACT:
BACKGROUND AND SUMMARY OF THE INVENTION
This invention is directed to a lightweight roof for a railroad boxcar which is formed of larger sheets of galvanized steel than have been conventionally used in the industry for boxcar roofs.
An object of this invention is a boxcar roof having fewer but larger roof sheets than prior boxcars to reduce the cost of installation of the roof.
Another object of this invention is a boxcar roof that is more resistant to leakage because fewer seam caps and thus fewer seam cap rivet passages are provided.
Yet another object of this invention is a lightweight roof assembly in which stronger roof panels are provided over the side door openings of the boxcar.
Still another object of this invention is a lightweight roof for a boxcar that is considerably lighter than conventional boxcar roofs.
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Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Morano S. Joseph
Olson Lars A.
Stanrail Corporation
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