Multiple stage friction clutch for vehicle power transmission

摘要

The clutch has a housing (2) with a concentric cylinder having working pistons formed as axial ball bearings (3). The connection part (12) of the drive shaft (11) has concentric engagement surfaces (13) with radial and concentric bores, against which the piston bias springs engage. The springs are positioned in the respective cylinders between the clutch section (12) and the axial bearings. The piston rods (16) have circular pressure pads (15) between the drive section of the clutch and the friction rings (22,23) of the friction disc.