Patent ID: 6915886
Filing Date: 2005-07-12
Classification: F16H

Abstract:
1. A bridging clutch for installation in a hydrodynamic coupling device having a housing, a pump wheel, and a turbine wheel, said bridging clutch comprising: a torsional vibration damper comprising a drive element for connecting to a drive shaft, a take-off element for connecting to a transmission input shaft, and a plurality of circumferential springs between said elements, each said element having openings for receiving said springs, each said element having at least one pass-through opening, each said element having at least one axial support area which is in contact with the at least one axial support area of the other said element for axially positioning the turbine wheel with respect to the housing; at least one friction element and at least one friction surface for providing a working connection between said drive element and said drive shaft; a piston which can move axially between a first axial position, wherein said at least one friction element engages said at least one friction surface to make said working connection, and a second axial position, wherein said working connection is released; a housing hub and a retaining element fixed to said housing hub, said piston being mounted non-rotatably but with freedom of axial movement to said retaining element, said retaining element having at least one pass-through opening aligned with said pass-through openings in said drive element and said take-off element.