Abstract: A flow path forming device including a first flow path forming member and a second flow path forming member that form a tubular flow path through which a plastic composition is allowed to pass to mold the plastic composition. At least one of a flow path forming surface of the first flow path forming member and a flow path forming surface of the second flow path forming member has a surface roughness parameter RPc of 60 or less.

Abstract: A motor drive control device that controls driving of a motor unit to which a three-phase AC voltage is inputted switches an energization pattern to a phase winding of the motor unit in a predetermined order, and detects a current value flowing through the motor unit for each energization pattern and stores the current value. In start-up operation of the motor unit, the motor drive control device starts synchronized operation when a second current value detected at the energization in the energization pattern of a second or subsequent time is smaller than a first current value detected at the energization in the energization pattern of a first time for m (m is a positive integer of two or more) consecutive times. In the synchronized operation, the energization pattern is switched according to rotational position information of a rotor generated based on a detection result of a voltage of the phase winding.

Abstract: A motor control device of a motor includes voltage acquisition circuitry that acquires a drive voltage of the motor; rotational speed acquisition circuitry that acquires a rotational speed of the motor; setting circuitry that sets a rotational speed instruction value of the motor; calculation circuitry that calculates a rotational speed threshold value of the motor; change circuitry that changes the rotational speed instruction value; and storage circuitry that stores reference data. The reference data includes at least three types of reference value sets each including a reference drive voltage value, a reference rotational speed instruction value, and a reference rotational speed threshold value. The calculation circuitry performs a proportional calculation, a current rotational speed instruction value, and the reference value set to calculate the rotational speed threshold value.

Abstract: A motor control device of a motor includes voltage acquisition circuitry that acquires a drive voltage of the motor; rotational speed acquisition circuitry that acquires a rotational speed of the motor; setting circuitry that sets a rotational speed instruction value of the motor; calculation circuitry that calculates a rotational speed threshold value of the motor; change circuitry that changes the rotational speed instruction value; and storage circuitry that stores reference data. The reference data includes at least three types of reference value sets each including a reference drive voltage value, a reference rotational speed instruction value, and a reference rotational speed threshold value. The calculation circuitry performs a proportional calculation, a current rotational speed instruction value, and the reference value set to calculate the rotational speed threshold value.

Abstract: A classifying apparatus including: a rotor with a plurality of annularly disposed blades, which rotates; and a louver with a plurality of blades which are disposed at an outer circumferential portion of the rotor so as to supply from the outer circumferential portion a fluid for dispersing and classifying a powder material, wherein the powder material is supplied to a gap between the rotor and the louver and centrifugally classified into fine powder and coarse powder, and wherein at least one of the following relationships is satisfied: Relationship (1): ??50° Relationship (2): D2/D1?1.17 where ? denotes an angle formed between imaginary lines connecting the center of the rotor with both ends of each blade of the louver, D1 denotes a diameter of the rotor, and D2 denotes an inner diameter of the louver.

Abstract: A media stirrer mill, including a dispersion container; a stirring member rotatable in the dispersion container; and a dispersion chamber formed in a gap between the stirring member and the dispersion container, including a dispersion media configured to disperse a material, wherein the dispersion container includes concavities having arc-like bottoms and convexities on its inner wall surface.

Abstract: A fluid spray nozzle for spraying fluid, satisfying a formula (r?r0)?L tan 35°, wherein r0 is a radius of a section having a minimum area of the nozzle when cut perpendicular to a spray direction of the fluid; and r is a radius of cross-sections of an upstream side and a downstream side of the spray direction from the section having a minimum area with a distance of L.

Abstract: A classifying apparatus including: a rotor with a plurality of annularly disposed blades, which rotates; and a louver with a plurality of blades which are disposed at an outer circumferential portion of the rotor so as to supply from the outer circumferential portion a fluid for dispersing and classifying a powder material, wherein the powder material is supplied to a gap between the rotor and the louver and centrifugally classified into fine powder and coarse powder, and wherein at least one of the following relationships is satisfied: Relationship (1): ??50° Relationship (2): D2/D1?1.17 where a denotes an angle formed between imaginary lines connecting the center of the rotor with both ends of each blade of the louver, D1 denotes a diameter of the rotor, and D2 denotes an inner diameter of the louver.

Abstract: A fluid spray nozzle for spraying fluid, satisfying a formula (r?r0)?L tan 35°, wherein r0 is a radius of a section having a minimum area of the nozzle when cut perpendicular to a spray direction of the fluid; and r is a radius of cross-sections of an upstream side and a downstream side of the spray direction from the section having a minimum area with a distance of L.

Abstract: An internet communication system, which is provided with session managing servers 210 and 220. In the system, each session managing server manages wireless communication apparatuses 110 and 120 and call relay servers 310 and 320. For that reason, the processing load of each session managing server is allowed to be equalized. As a result, the operational efficiency of the system may be enhanced, and quality of services offered to the user of the system may be improved.

Abstract: An internet communication system, which is provided with session managing servers 210 and 220. In the system, each session managing server manages wireless communication apparatuses 110 and 120 and call relay servers 310 and 320. For that reason, the processing load of each session managing server is allowed to be equalized. As a result, the operational efficiency of the system may be enhanced, and quality of services offered to the user of the system may be improved.

Abstract: An internet communication system, which is provided with session managing servers 210 and 220. In the system, each session managing server manages communication adapters 110 and 120 and call relay servers 310 and 320. For that reason, the processing load of each session managing server is allowed to be equalized. As a result, the operational efficiency of the system may be enhanced, and quality of services offered to the user of the system may be improved.