Railroad car truck spring jack
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 1998
Grant Date -
N/A
app pub date -
Nov 27, 1996
filing date -
Dec 1, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A railroad car truck frame jack clamps a side frame, the clamps suspend a cross tube which in turn suspends one or more cylinders which raise a bolster plug thereby lifting the bolster relative to the side frame and decompressing the truck springs for repair or replacement, twisting loads being minimized in the preferred embodiment by a lost motion slot.
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Family
International Classification(s)
Cited Art Landscape
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