Combination wood plastic railroad tie
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 1981
Issued Date -
N/A
app pub date -
Feb 25, 1976
filing date -
Oct 21, 1974
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combination railroad tie for supporting railroad track rails on a ballast or concrete roadbed. The main body portion of the tie is wood, having a rectangular cross section and a flat upper and lower surface. A plurality of flat plastic plies made of shredded wood fibers or wood chips bonded together by a thermal setting resin are, in turn, bonded to the upper and lower surfaces of the main body portion.
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Cited Art Landscape
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