摘要:
A hollow cylindrical stator and a cylindrical rotor are disposed in the stator with a gap therebetween, the inner peripheral surface of the stator or the outer peripheral surface of the rotor being provided with a helical groove, or thread groove, and evacuation being performed by rotation of the rotor. The width of the helical groove adjacent the suction side of the pump is larger than the width of a ridge between adjacent turns of the groove.
摘要:
An electric power receiving device according to the invention receives an electric power from a primary coil, with which a first alternating voltage is applied and through which a first alternate current flows. The device includes an electric power receiving section and a reducing-voltage generating section. The receiving section includes a secondary coil electromagnetically coupled to the primary coil and a capacitor connected to the secondary coil, and generates a second alternating voltage based upon the first alternating current. The generating section generates a reducing-voltage and applies the reducing-voltage to the receiving section, the reducing-voltage being capable of reducing a reactance voltage generated in the receiving section by a second alternating current generated in the receiving section due to the second alternating voltage, and the reducing-voltage being approximately equal to the second alternating voltage in frequency.
摘要:
There is disclosed a multijoint in which the primary moment force caused by a combined gravity of the lower arm which is supported by an elbow joint portion for pivotting the upper and lower arm together and a distal mechanism fitted to the distal end of the lower arm, is minimized by imparting a force opposite the primary moment force thereby reducing the load of an electric motor for driving the elbow joint portion.
摘要:
An electric power receiving device according to the invention receives an electric power from a primary coil, with which a first alternating voltage is applied and through which a first alternate current flows. The device includes an electric power receiving section and a reducing-voltage generating section. The receiving section includes a secondary coil electromagnetically coupled to the primary coil and a capacitor connected to the secondary coil, and generates a second alternating voltage based upon the first alternating current. The generating section generates a reducing-voltage and applies the reducing-voltage to the receiving section, the reducing-voltage being capable of reducing a reactance voltage generated in the receiving section by a second alternating current generated in the receiving section due to the second alternating voltage, and the reducing-voltage being approximately equal to the second alternating voltage in frequency.
摘要:
A transformer includes a primary coil, a secondary coil, and a core. The core is to be used in combination with the primary coil or the secondary coil, and includes a conductor storage part and a central part. The conductor storage part is a concave recess formed in an annular manner and configured to store a conductor of the coil therein. The central part is a region inward from the conductor when the core is used in combination with the coil. The central part has a recessed shape having an opening that opens toward a direction opposite to a direction of an opening of the concave recess. The central part has an end, at a side opposite to a side of the opening of the central part, which is generally flat so as to be contiguous with an inner opening edge of the conductor storage part.
摘要:
Direct softening heat treatment of rolled wire rods comprises the steps of:providing wire rods by hot- or warm-rolling, and immediately following rolling, coiling the rolled wire rods in an annealing furnace. Apparatus therefor comprises an annealing furnace provided with an externally or internally built coiler for rolled wire rods disposed adjacent to a rolling line of said wire rods, the coiler being disposed so as to directly receive the rolled wire rods.
摘要:
Direct softening heat treatment of rolled wire rods comprises the steps:providing wire rods by hot- or warm-rolling, andimmediately following rolling, coiling the rolled wire rods in an annealing furnace. Apparatus therefor comprises an annealing furnace provided with an externally or internally built coiler for rolled wire rods disposed adjacent to a rolling line of said wire rods, the coiler being disposed so as to directly receive the rolled wire rods.