Bearings for piano action mechanism employing bushing cloth and method of fabricating same
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United States of America Patent
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-
Jun 7, 1983
Grant Date -
N/A
app pub date -
Jun 15, 1981
filing date -
Jun 15, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A piano action mechanism wherein a shaft pin for rotatably supporting a rotatable member on a flange is carried in bearings formed of bushing cloth glued to the surface of bushing holes in the rotatable member. With a pin inserted through the cylinders of bushing cloth, the assembly is dipped in water, dried, dipped in a solution of resin bonded fluorocarbon solids, again dried and the pin removed, to provide a durable and stable bearing having a low coefficient of friction and which is essentially noise-free and insensitive to changes in temperature and humidity.
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