Patent ID: 7223196
Filing Date: 2007-05-29
Classification: F16H,H02K

Abstract:
1. A gear motor device with a fail-safe device comprising: a housing; a reduction gear positioned within the housing, the reduction gear having at least one planetary gear fixed relative to the housing, the at least one planetary gear having an internal gear; an electromotor operatively secured to the reduction gear; an output gear shaft; at least one planetary wheel secured to the output gear shaft and meshing with the internal gear; an electromagnetic clutch including a magnetically conductive armature and a magnetically conductive stator; an electromagnetic coil arranged in the magnetically conductive stator so that, during the application of current to the electromagnetic coil, the internal gear is secured against turning, and the internal gear acts as the magnet armature, is axially displaceable and its geometric alignment is not determined by the housing at least during a power-on or off switching operation of the electromagnetic clutch.