Friction member
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United States of America Patent
Stats
-
Sep 24, 2002
Grant Date -
Jul 25, 2002
app pub date -
Mar 12, 1999
filing date -
Mar 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention intends to provide a friction member which is high in an anti-fading character and low in mate attacking character. For such purpose, in a friction member composed of a fiber containing substrate, a bonding agent and a filling agent, an accumulated blow hole rate of blow holes having hole diameter not less than 3.5 .mu.m is selected to be not larger than 2 volume %, and an accumulated blow hole rate of blow holes having hole diameter from 0 to 3.5 .mu.m is selected to be not less than 3 volume %.
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