Patent ID: 7828529
Filing Date: 2010-11-09
Classification: F01P,F16D

Abstract:
1. A regulatable drive for driving a coolant pump in a motor vehicle, comprising: a rotatably mounted shaft; a driven member mounted rotationally fixedly on the shaft; a drive member mounted rotatably on the shaft, with the drive member and driven member defining therebetween a coupling region for receiving a viscous fluid; at least one first flow path and at least one second flow path connecting a fluid storage space to the coupling region; a first selectively actuatable device for varying a passage orifice of the first flow path with a first axially movable armature; and a second selectively actuatable device for varying a passage orifice of the second flow path with a second axially movable armature, wherein the first and second armatures are configured to operate by simultaneously moving in a same direction such that the first flow path is opened and the second flow path is closed when the first and second armatures simultaneously move in a first direction, and the first flow path is closed and the second flow path is opened when the first and second armatures simultaneously move in a second direction.