Abstract: A machinable resin molded product having a charge half-life of 1 to 60 seconds and a water content of 0.05 to 1.0 wt %, a model obtained by cutting the resin molded product, and a machinable resin-forming material comprising a hard resin component (A) and a non-silicone surfactant (B) are provided, whereby a machinable resin-forming material such that powder or dust generated from the same in a cutting process does not adversely affect electronically controlled circuits of a processing machine, thereby not causing malfunctions, accidental stops, etc. of the processing machine, a machinable resin molded product made of the foregoing resin-forming material, and a model obtained by cutting the molded product are provided.

Abstract: The present invention provides an optically controlled power converting apparatus using light trigger/light quench electrostatic induction thyristors, as switching elements, which can execute the switching operations at a high speed being when they are supplied with light trigger pulses and light quench pulses. By supplying the light trigger pulses and light quench pulses at the timings corresponding to the pulse width modulation, the light trigger/light quench electrostatic induction thyristors can perform predetermined power converting operations.

Abstract: A correction device in a vehicle power steering apparatus adapted to effectively utilize the aiding effect of a hydraulic power cylinder depending upon travelling speeds of the vehicle. A change in value of rightward or leftward acceleration resulted from the turning of the vehicle is sensed by a weight oscillatably received within a closed oil chamber of the correction device to allow the operator to perceive an adequate steering resistance, thereby avoiding his erroneous steering. The correction device includes stoppers positioned at tip surfaces of nozzle members to provide a desired clearance between an end surface of a pressure restriction plate and the nozzle member thus allowing oil in the nozzle to flow. The device further includes compression springs retained between the weight and the casing for biasing the weight towards its neutral position, the compression spring engaging an adjusting screw to predetermine a value of lateral acceleration of the vehicle.