| http://www.w3.org/ns/prov#value | - Friction devices such as clutches or brakes, especially for automotive vehicle applications, e.g. for the shifting of a multispeed transmission under load, generally comprise two relatively movable members, one of which is hydraulically displaceable, (i.e. is a piston or is coupled to a piston) which are urged toward one another (hydraulically or by spring force) to bring the two movable members o
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