Process for producing sliding bodies for electric collectors
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United States of America Patent
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May 20, 1997
Grant Date -
N/A
app pub date -
Apr 5, 1995
filing date -
Oct 13, 1992
priority date (Note) -
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Abstract
A sliding body for electric collectors and the like is press-formed from a powder mass or composition which includes at least graphite and a synthetic resin as a bonding agent. The powder mass is pressed in a mold with at least one press die after a thin layer of a resin-free parting compound is applied between the powder mass and the press die to prevent the resin from adhering to the press die when subjected to frictional heat of compression. Powdered copper is the preferred parting compound and also reduces the contact resistance between the press-formed powder mass and a lead embedded in and pressed with the powder mass in the mold.
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