Abstract: An evaporative fuel control apparatus of an internal combustion engine is provided with a purge correction prohibition part. The apparatus includes a detection part for detecting operating conditions of the internal combustion engine and for supplying signals indicative of the operating conditions, a purge control valve for controlling a flow of fuel vapor to an intake passage of the engine, a calculation part for calculating a fuel injection amount in response to the signals, and a fuel injection control part for varying a feedback correction factor of an air-fuel ratio in response to the signals so as to maintain the air-fuel ratio at a stoichiometric value and for correcting the fuel injection amount on the basis of the feedback correction factor.

Abstract: An evaporative fuel control apparatus of an internal combustion engine for controlling a purge correction amount and a fuel injection amount in response to a concentration of fuel vapor in intake mixture. The apparatus includes a detection part for detecting operating conditions of the engine and for supplying signals indicative of the operating conditions, a purge valve for controlling a flow of fuel vapor from a fuel tank to an intake passage, and a calculation part for calculating the fuel injection amount in response to the signals.

Abstract: A vertical impact crusher comprises a rotor supported for rotation at a high rotating speed about a vertical axis, and having discharge gates through which a material fed into the rotor is discharged for crushing. Each discharge gate is provided in one side thereof with a pair of hard chips provided respectively with cemented carbide chips and stacked one over the other so as to be replaced with each other. Each hard chip has upper and lower portions projecting in the direction of rotation of the rotor, and each cemented carbide has upper and lower portions projecitng in the direction of rotation of the rotor. The hard chips provided respectively with the cemented carbide chips are replaced with each other after the working surfaces of the hard chips and the cemented carbide chips have been abraded to some extent.

Abstract: It is disclosed that a metal cored board which comprises an electrically conductive layer whose one surface at least composed of a hardly oxidizable metal, an insulating organic polymer layer baked on the surface of the hardly oxidizable metal, and a metal core adhered on the insulating organic polymer layer, and a method for manufacturing a metal cored board, which comprises a step to coat the surface of a hardly oxidizable metal layer of an electrically conductive metal foil with an insulating varnish, a step to bake a layer of the varnish, and a step to adhere a metal core on the baked varnish layer.

Abstract: It is disclosed that a metal cored board which comprises a base metal core, an easily solderable metal plating layer formed on one surface of the base metal core, an electrically insulating layer formed on the another surface of the base metal core, and an electrically conductive metal layer formed on the electrically insulating layer, a method for manufacturing a metal cored board, which comprises a step to plate both surface of a base metal core with an easily solderable metal, a step to form an electrically insulating layer on one surface of the easily solderable metal plating layer, and a step to form an electrically conductive metal layer on the electrically insulating layer.