US PATENT SUBCLASS 52 / 45
RAILROAD CAR ROOF CONSTRUCTION

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

45RAILROAD CAR ROOF CONSTRUCTION {4}
46  DF  .~> Continuous carline; e.g., discrete coextensive rafter {6}
53  DF  .~> Transverse sustaining rib integral with covering
54  DF  .~> Central discrete ridge member {1}
56  DF  .~> Covering sheet with overhanging continuing edge section

DEFINITION

Classification: 52/45

(under the class definition) Structure comprising roof construction peculiar to railroad cars.

SEE OR SEARCH THIS CLASS, SUBCLASS:

17, for an insulated car roof.

18, for a clerestory or sawtooth roof.

41+, for a roof with running board or saddle.

SEE OR SEARCH CLASS

105, Railway Rolling Stock,

238.1+, for railway rolling stock comprising a special car body.