Compressor power transfer system uses coaxial first and second rotors plus spring between with fixed and free ends on respective rotors to actuate or cancel transfer surface for power transfer.

摘要

Power is transmitted from the first rotor (belt pulley) (41) to the coaxial second rotor (drive shaft) (16) for their co-directed rotation using an interposed flexible element (47) for power transfer having a fixed end (47a) on first and second rotors and a free end (48) releasably joined to the other respective rotor. A power transfer surface (43a) on the other respective rotor opposes the free end of the element (47), using surface (43a) for power transfer between the rotors. The element (47) changes shape in response to the load on rotor (16) except when the free element end (42) is separated from the transfer surface (43a). This separation is effected by means of a release element so the free end is separated at excessive rotor (16) load above a pre-set level. A bearing surface (43c) on the other respective rotor faces the transfer surface and only makes contact with the free end (48) when the second rotor (16) is driven faster than the decelerated first rotor (41) due to rotor (16) inertia.