Friction cone i.e. male friction cone, for friction clutch of self-propelled rolling vehicle, has declutching portions circumferentially distributed, where each portion extends on angular sector of cone

摘要

The male cone (1) has a friction surface with cone portions (4) and cooperating with a friction surface of a female friction cone by connection the cones relative to each other for passage from a declutched position to a clutched position. Three declutching portions (3) are circumferentially distributed and provided on the surface of the male cone. The declutching portions extend away from an imaginary conical revolution surface (2') passing through the cone portions. Each declutching portion extends on an angular sector (S) of the male cone, where the sector is higher than 20 degrees.