Friction material designed for fitting to a device employing friction in a liquid medium, and a method of producing such a friction material and the device to which it is fitted
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United States of America Patent
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Dec 28, 2004
Grant Date -
Jun 21, 2001
app pub date -
Mar 11, 1998
filing date -
Mar 25, 1994
priority date (Note) -
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Abstract
A friction material for a liquid medium, according to the invention, consists of a fibre mat impregnated with a thermosetting resin, the fibres having a length of at least 12 mm. The method of producing such a material includes the following steps: a) a mixture of fibres of the same nature or of different natures is produced in a mixer; b) the mixture is carded to form a card web; c) the card web is lapped; d) the lap thus formed is needled; e) the needled mat is impregnated with a thermosetting resin.
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