| http://www.w3.org/ns/prov#value | - A V-pulley 47 (see FIGS. 1 and 3) hanging the V-belt 6 on an outer periphery thereof is joined to the rotor 42 by joining means such as welding and is a rotating body (input portion of the viscous clutch 7) which always rotates by a rotational driving force of the engine E, transmitted thereto through the V-belt 6.
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