| 摘要 |
A friction clutch whose diaphragm spring has equidistant prongs extending axially and radially from the energy-storing annular main section and being bolted directly to the flywheel on the crankshaft of an engine so that the spring normally biases a pressure plate against a clutch disc and the latter is thereby biased against the flywheel. The spring has alternating tongues and slots extending radially inwardly from the annular main section as well as an annulus of arcuate openings between the outermost portions of the slots and the prongs. The openings enhance the flexibility of the conical frustum which is constituted by the annular main section and the tongues with reference to the conical frustum including the prongs, and the openings thus prolong the useful life of the diaphragm spring.
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