Abstract: An armature for use in a motor has a plurality of teeth, a plurality of slots and coils of three kinds of phases. A plurality of the slots is formed between the coadjacent teeth. The coils of three phases are wound around the teeth. The armature has a coil structure, according to which radial force acting on a specific tooth is greater than radial force acting on another tooth. A peak value of the radial force acting on the specific tooth is approximated to a peak value of the radial force acting on another tooth in such a manner that a flux path in and/or adjacent to the specific tooth is made narrower than a flux path in and/or adjacent to another tooth.

Abstract: A method for mounting a coil onto a stator for a rotary electric machine. The method includes forming a coil piece by winding wire having a flat cross section into a single row lamination state including wire layers that are aligned along a line that is perpendicular to flat surfaces of the wire. The coil piece is formed so that a first portion to be inserted in the slot and a second portion that is not inserted in the slot appear alternately along the coil piece. The method also includes displacing the wire layers at the first portion from one another to change the single row lamination state to a connectively laminated stat e in which the wire layers at the portion to be inserted in the slot each adjacent pair of the wire layers partially overlap with respect to a direction perpendicular to the flat surfaces of the wire.

Abstract: An electromagnetic actuator includes a cylinder, a stationary core and a movable core arranged in the cylinder, and a coil located about the cylinder. The movable core moves in the cylinder in accordance with an electromagnetic force, which is generated between the stationary core and the movable core based on the current supply to the coil. The cylinder includes a first cylindrical member made of nonmagnetic material, and a second cylindrical member made of magnetic material. The first cylindrical member surrounds the stationary core and the movable core. A part of the first cylindrical member in the vicinity of the movable core is made thin to form a small diameter portion. The small diameter portion is fitted to the second cylindrical member.

Abstract: A coil is formed by winding a flat conductor wire around a coil pre-forming tool in a predefined number of turns. The cross-section shape of the coil is made approximately the same as that of the slot in a stator core into which the coil is to be inserted. A stator of a rotating electrical unit is comprised by inserting the coil into a plurality of slots so as to cross over the plurality of slots.

Abstract: A cable for winding coil, having been formed into a cable by bundling nine strings of conductor wires, forms a coil wound in a plurality of slots in a distributional manner by connecting each end of the nine conductor wires between different conductor wires thereof.

Abstract: A plurality of slots are provided at a stator core. A coil component is produced by winding conductor wires around a forming tool several times. The coil component is cut off at a predetermined part and inserted into a slot so as to cross over the plurality of slots. Then, a coil is formed by connecting the corresponding conductor wires at cut surfaces of the coil component.

Abstract: A plurality of slots is provided at a stator core. A cable component is formed by bundling a plurality of conducting wires and connectors are mounted on both ends. The cable component is inserted into corresponding slot so as to cross over the corresponding plurality of slots and then a coil is formed by connecting both ends of the cable component.

Abstract: A control valve for a variable displacement compressor is provided. A retainer cylinder in the control valve includes a first cylindrical member made of non-magnetic material and a second cylindrical member having a bottom portion made of magnetic material. A shim is intervened a bottom surface of a plunger and inner bottom surface of the second cylindrical member. The retainer cylinder has good magnetic permeability between a coil and the plunger, even though the wall of the cylinder thickens to improve the withstanding pressure to internal refrigerant pressure.

Abstract: A control valve includes an accommodation cylinder, a coil, a stator, a plunger, and a valve body. Electromagnetic force is generated between the stator and the plunger and the plunger moves relative to the stator. The valve body adjusts the opening degree of a valve hole. A flat surface and a peripheral wall are formed in an end of the stator. The peripheral wall has a tapered cross-section with an inclined inner surface. The inclined inner surface and the flat surface define a recess. The plunger has a frustum portion. The frustum portion includes a flat distal surface and an annular inclined surface. The taper angle of the peripheral wall is equal to or less than twenty degrees. The diameter of the flat distal surface of the frustum portion is equal to or greater than eighty percent of the largest diameter of the annular inclined surface.

Abstract: A control valve includes an accommodation cylinder, a coil, a stator, a plunger, and a valve body. Electromagnetic force is generated between the stator and the plunger and the plunger moves relative to the stator. The valve body adjusts the opening degree of a valve hole. A flat surface and a peripheral wall are formed in an end of the stator. The peripheral wall has a tapered cross-section with an inclined inner surface. The inclined inner surface and the flat surface define a recess. The plunger has a frustum portion. The frustum portion includes a flat distal surface and an annular inclined surface. The taper angle of the peripheral wall is equal to or less than twenty degrees. The diameter of the flat distal surface of the frustum portion is equal to or greater than eighty percent of the largest diameter of the annular inclined surface.

Abstract: An electromagnetic actuator includes a cylinder, a stationary core and a movable core arranged in the cylinder, and a coil located about the cylinder. The movable core moves in the cylinder in accordance with an electromagnetic force, which is generated between the stationary core and the movable core based on the current supply to the coil. The cylinder includes a first cylindrical member made of nonmagnetic material, and a second cylindrical member made of magnetic material. The first cylindrical member surrounds the stationary core and the movable core. A part of the first cylindrical member in the vicinity of the movable core is made thin to form a small diameter portion. The small diameter portion is fitted to the second cylindrical member.

Abstract: A control valve for a variable displacement compressor is provided. A retainer cylinder in the control valve includes a first cylindrical member made of non-magnetic material and a second cylindrical member having a bottom portion made of magnetic material. A shim is intervened a bottom surface of a plunger and inner bottom surface of the second cylindrical member. The retainer cylinder has good magnetic permeability between a coil and the plunger, even though the wall of the cylinder thickens to improve the withstanding pressure to internal refrigerant pressure.

Abstract: A torque sensor having an improved detection accuracy is disclosed. The torque sensor includes a cylindrical stator. The stator is arranged to face a magnetostrictive member fixed to a shaft. The stator includes a stator body and two retainer rings. When assembling the stator body and the two retainer rings, a pair of exciting coils and a pair of detecting coils are accommodated in the inner wall of the stator. Joints between the stator body and the two retainer rings are not exposed to the inner surface of the stator.

Abstract: An improved torque sensor for detecting the direction and the magnitude of a torque applied to a shaft. The sensor includes a magnetostrictive layer, a pair of bearings, a stator and two nuts. The sleeve is fixed the circumference of the shaft. The layer has a magnetostriction effect in accordance with torque applied to the shaft. A pair of collars are fixed to the shaft at opposite ends of the layer. The bearings are connected to the shaft. Each bearing contacts one of the collars. The stator accommodates two pairs of coils. Each coil pair includes an exciting coil and a detecting coil. The coils surround and face the magnetostrictive layer. The axial position of the stator is determined by the bearings. Each nut is threaded to a threaded portion fixed to the shaft and presses one of the bearings against the corresponding collar. Accordingly, the axial position of the stator is determined.

Abstract: The present invention relates a method for manufacturing a hydrogen storage alloy electrode that can prevent the peeling-off of a hydrogen storage alloy powder and can decrease both the electric resistance and the cell reaction resistance of the electrode coated with SBR. A method for manufacturing a hydrogen storage alloy electrode comprises the steps of mixing a powder of a hydrogen storage alloy with styrene-butadiene base latex and water and kneading the mixture so as to form a paste, and after coating the paste on a current collector, drying and pressing the current collector, wherein the styrene-butadiene base latex has a glass transition temperature in a range of -25.degree. to -40.degree. C. Thereby, it is possible to prevent the peeling of the hydrogen storage alloy powder and to decrease both the electric resistance and the cell reaction resistance of the electrode coated with the SBR.