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US 5,779,018 AGranted
Friction clutch with carbon pressure plate
AssigneeMannesmann Sachs AG
InventorsKlaus Hofmann, Klaus Betten, Nicole Unrath, Horst Friedrich
Life of this patent
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Abstract
A friction clutch, preferably a multi-plate clutch, in which the pressure plate is made of carbon material and has a wear-resistant surface coating and/or an inserted wire ring in the contact area for the diaphragm spring.
Claims7
A friction clutch, comprising a clutch housing mountable on a counterpressure plate;
- a hub with internal teeth arranged in the clutch housing so as to be mountable on a transmission shaft, which defines a rotational axis, in turn-proof fashion;
- a friction element arranged on the hub in turn-proof fashion;
- a pressure plate arranged in the clutch housing in turn-proof but axially movable fashion;
- and diaphragm spring means for subjecting the pressure plate to a force so that the pressure plate, with interconnection of the friction element, is pressable against the counterpressure plate carrying the clutch housing, the pressure plate being made of carbon material and having a friction surface for direct contact with a friction surface of the friction element, the pressure plate further having a seating bulge arranged to engage with the diaphragm spring means, the seating bulge being arranged on a side of the pressure plate opposite to the friction surface so as to be concentric to the rotational axis, the seating bulge being reinforced, at least in an area making contact with the diaphragm spring means, by a wear resistant material.
1 more element
Dependencies are inferred from the claim text.