Patent ID: 7040871

Claim:
A compressor provided with a torque limiter, the compressor being additionally provided with a power transmission mechanism and rotationally driven by an external rotational power source via said power transmission mechanism, characterized in that said power transmission mechanism comprises a one-way clutch section and, while the torque load acting upon said compressor is within the range of normal value, said one-way clutch section is in engagement so as to transmit the rotational power from said rotational power source to said compressor whereas, when the torque load acting upon said compressor increases unusually above a predetermined value, said one-way clutch section becomes disengaged so that the transmission of the rotational power from said rotational power source to said compressor is shut off, and the rotational power is not transmitted again once the transmission of the rotational power is shut off, wherein said one-way clutch section is composed of a roller type one-way clutch and, in addition to a first pocket section being formed on one side, in the circumferential direction, of a wedge surface to be engaged with said roller of the one-way clutch section on the outer ring or the inner ring, a second pocket section is formed on the other side of the wedge surface such that, when the torque load increases unusually above a predetermined value, said roller falls into the second pocket section to be disengaged from said wedge surface, and a distance between the outer ring and the inner ring in the second pocket section is larger than that between the outer ring and the inner ring at the wedge surface and is larger than the diameter of the roller.