Abstract: A powder feeder includes a plurality of driving rollers with their axial centers horizontal, a cylindrical hopper placed on the driving rollers and rotationally driven, a connection opening formed in the rotating hopper for loading powder therein, a chuck inserted into the connection opening and supported by a support frame, a powder discharge passage interconnecting the inside and outside of the rotating hopper through the chuck, a scooping part continuously formed on an inner surface of the rotating hopper which faces an inner end of the powder discharge passage, and a pressurization passage open to the inside of the rotating hopper for pressurizing the inside of the rotating hopper, the inner end of the powder discharge passage interconnecting the inside and outside of the rotating hopper being open to a location where the powder that has been scooped up by the scooping part falls down.

Abstract: A powder feeder includes a plurality of driving rollers with their axial centers horizontal, a cylindrical hopper placed on the driving rollers and rotationally driven, a connection opening formed in the rotating hopper for loading powder therein, a chuck inserted into the connection opening and supported by a support frame, a powder discharge passage interconnecting the inside and outside of the rotating hopper through the chuck, a scooping part continuously formed on an inner surface of the rotating hopper which faces an inner end of the powder discharge passage, and a pressurization passage open to the inside of the rotating hopper for pressurizing the inside of the rotating hopper, the inner end of the powder discharge passage interconnecting the inside and outside of the rotating hopper being open to a location where the powder that has been scooped up by the scooping part falls down.

Abstract: A mechanical continuously variable transmission in which the power roller is in “line contact” with the counter roller instead of conventional “pinpoint contact”. By utilizing line contact of the power roller and the counter roller, the pressure force between the metal components of a mechanical continuously variable transmission can be reduced. In addition, the line contact also reduces extra energy for maintaining the operation thereof. The configuration of the roll surface of the power roller, which is rotated by a rotation axle connected to an input axle, is formed into a partial configuration of a sphere. A plurality of counter rollers, which are in line contact with the power roller having said roll surface, are arranged in a circle by a disk. Each counter roller is formed with a concave roll surface corresponding to the partial configuration of the sphere on the surface thereof. The counter rollers are driven to rotate by the rotation of the power roller in contact therewith.

Abstract: To provide a plasma spray apparatus, having a reduced number of jet ports for the working medium transformed into plasma, resulting in a simplified structure thereof, and even when the trajectory of the working medium becomes misaligned, the apparatus remains capable of producing a plasma flame that can properly melt the spray material; thus, the spray material can be used effectively. Two jet paths in the plasma spray apparatus are formed at both sides of one supply port for spray material 17 and are arranged so that the axial directions cross each other at the outside of the nozzle anode 11; two cathodes 13 are disposed inside the two jet paths 12; and the openings of the jet paths 12 are formed into elongated holes so that the center lines thereof are parallel to each other and the areas thereof are the same.

Abstract: The present invention provides a mechanical continuously variable transmission in which the power roller is in “line contact” with the counter roller instead of conventional “pinpoint contact”. By utilizing line contact of the power roller and the counter roller, the pressure force between the metal components of a mechanical continuously variable transmission can be reduced. In addition, the line contact also reduces extra energy for maintaining the operation thereof. The configuration of the roll surface of the power roller, which is rotated by a rotation axle connected to an input axle, is formed into a partial configuration of a sphere. A plurality of counter rollers, which are in line contact with the power roller having said roll surface, are arranged in a circle by a disk. Each counter roller is formed with a concave roll surface corresponding to the partial configuration of the sphere on the surface thereof.

Abstract: A torch head includes a torch body which is inserted into the tube member, a cathode tube which is arranged in the torch body such that the longitudinal axis of the cathode tube is aligned to the longitudinal axis of the torch body and which has a cathode at the distal end of the cathode tube, an anode member which is arranged on the distal end side of the cathode tube, and a spraying material supply tube which opens toward a mouth opening formed in the anode member and which is arranged outside the torch body. In the anode member, a plasma gas supply chamber in which the front end of the cathode tube is stored in a non-contact state, an orifice which communicates with the plasma gas supply chamber and in which the cathode is stored in a non-contact state, and a plasma generation chamber which communicates with the orifice, which has a longitudinal axis substantially perpendicular to the longitudinal axis of the torch body, and which has the mouth opening are formed.

Abstract: A torch for thermal spraying stored rotatably in the front portion of a nozzle and having a discharge member with a droplet passage at the center, wherein a projection is formed at the tip of the discharge member, an air jet space allowing rotating air to be blown therein is formed at the rear of the discharge member projectedly from the discharge member by integrally forming with each other a plurality of arms disposed in an air jet cylinder, and a rotating force is given to the discharge member by the air blown from an air jet port disposed on the outside of the air jet space, so as to bring the rotational speed of the discharge member into the range of 800 to 6000 rpm, whereby thermal spraying can be performed on the internal surfaces of pipes and cylinders, and the thickness of a thermal spraying film can be optimized.

Abstract: The thermal spraying torch 100 is capable of successively supplying a thermal spray material 80 heated and fused by a plasma forming gas in an arc generated between electrodes contained in an outer cylinder 10, or by a combustion gas supplied passing through the outer cylinder 10 and burned under high temperature conditions. The torch can spray the thermal spray material 80 via a nozzle 40 by the plasma forming gas or the combustion gas so that droplet(s) 81 can be formed, and a rotatable discharge member 60 is contained in a forward portion of the nozzle 40 and has a droplet passage 61 for the droplet(s) 81 at the center so that the droplet(s) 81 can be jetted together with the forming gas or the combustion gas.

Abstract: A torch head includes a torch body which is inserted into the tube member, a cathode tube which is arranged in the torch body such that the longitudinal axis of the cathode tube is aligned to the longitudinal axis of the torch body and which has a cathode at the distal end of the cathode tube, an anode member which is arranged on the distal end side of the cathode tube, and a spraying material supply tube which opens toward a mouth opening formed in the anode member and which is arranged outside the torch body. In the anode member, a plasma gas supply chamber in which the front end of the cathode tube is stored in a non-contact state, an orifice which communicates with the plasma gas supply chamber and in which the cathode is stored in a non-contact state, and a plasma generation chamber which communicates with the orifice, which has a longitudinal axis substantially perpendicular to the longitudinal axis of the torch body, and which has the mouth opening are formed.

Abstract: A linear motor driven elevator including in an elevator shaft, a fixed portion, an upper turning portion, and a lower turning portion. An ascending passage and a descending passage are sectionally formed between both turning portions in the fixed portion in a manner that the passages are positioned oppositely. A plurality of cages are accommodated in the passages, the cages being provided with permanent magnets which oppose the linear motor primary coils. Locking mechanisms for selectively locking the cages in position are provided. The turning portions each include a motor driven turn table which rotates the cage about the center axis of the elevator shaft to switch from the ascending to the descending passages and vice versa.

Abstract: A powder constant-volume feeder includes a canister having on the inner surface thereof a fin for transferring powder upwards and is inclined to form a return portion for the powder which has been transferred by the fin. A bucket wheel has a plurality of buckets for continuously transferring the powder from the interior of the return portion to a powder hopper. The powder hopper receives the powder from the interior of the buckets of the bucket wheel. A constant volume of powder can thus be fed continously at a constant bulk density.