Luk Lamellen Und Kupplungsbau Gmbh

Schaeffler Technologies Ag & Co .kg

Ad Kooy

Hartmut Mende

Johann Jäckel

Andreas Raimann

Jürgen Kroll

Bin Zhou

Norbert Mebus

Philippe Schwederle

Michael Bosse

Helmar Bier

Johann J{overscore (a)}ckel

Ralf Edl

The coil springs of an arcuate energy storing device in a torsional vibration damper are fitted into each other in such a way that at least one convolution of the inner spring engages at least one convolution of the outer spring when the energy storing device is caused to store energy (or to store additional energy) and/or is permitted to dissipate energy while the damper is in actual use, e.g., between the primary and secondary flywheels of a composite flywheel in the power train of a motor vehicle. The at least one convolution of the outer spring can be facetted and/or deformed for reliable engagement with the at least one convolution of the inner spring, and the at least one convolution of the inner spring can have a circular or a non-circular outline. The at least one convolution of the inner spring can engage one or more end convolutions or one or more intermediate convolutions of the outer spring.

Torsional vibration damper

A friction clutch between an engine and a transmission in a motor vehicle has a diaphragm spring with prongs which are moved axially by a bearing in order to disengage the clutch. The bearing is mounted on an actuating device including a driven part carried by a support on the transmission case and a driving part which can be rotated by a clutch pedal. The actuating device can be moved axially by a first ramp assembly having complementary ramps on the support and the driven part. A second ramp assembly forms part of a wear compensating unit which automatically changes the axial position and/or the orientation of the diaphragm spring to compensate for wear at least upon the friction linings of the clutch disc forming part of the clutch. The second ramp assembly can include mating internal and external threads. A third ramp assembly is defined or carried by the driving and driven parts of the actuating device.

Clutch operating apparatus

An apparatus which is used to operate a clutch in the power train between the prime mover and the transmission of a motor vehicle has a bearing which can be moved axially against the prongs of the clutch spring to change the state of the clutch between an engaged and a disengaged condition. In addition to being movable in response to the depression of a clutch pedal, the bearing is also movable by a compensating unit forming part of the clutch operating apparatus and serving to compensate for wear upon the friction linings of the clutch disc and, if necessary, upon the pressure plate and the counterpressure plate of the clutch. The means for moving the bearing in order to compensate for such wear includes two sets of complementary ramps or cams which can move the bearing toward the pressure plate in response to angular movement of an annular member which carries one set of the cams or ramps and which is biased by an energy storing element to turn in a direction necessary to move the bearing in order to compensate for wear, i.e., in addition to that movement of the bearing which is necessary to change the condition of the clutch.

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Lauf, Germany

Ad Kooy