Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: The object of the present invention is to provide: high-reliability and long-life CO2 refrigerant compressor-use bearings that uses bearing materials high in wear resistance and in baking resistance, and; such a compressor, air conditioner, refrigerator, and hot-water supply machine that each employ these bearings.

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: A rotor 10 has a structure with a rotor core 12 and rotor conductors 14, the rotor core 12 is made of a weakly magnetic substance with a high permeability and a relatively low electrical conductivity, and the rotor conductors 14 are composed of a conducting material with a low permeability and a relatively high electrical conductivity. Also, the rotor core 12 and the rotor conductors 14 are formed into a single body that has an entire-surface with a smooth cylindrical shape. Furthermore, a stator 20 is composed of a plurality of stator sheets 22 laminated in the axial direction and a stator winding 24. Each stator sheet is formed with a closed circular inner ring portion 22a and an outer ring portion 22b, with slots 23 that penetrate the sheets between the ring portions, and the stator winding is housed in the slots.

Abstract: A rotating tool pot chain is capable of bending in both directions, the tool pot sweeps a relatively small area as it rotates, and the chain is capable of holding the tool pot stably. A pair of inner link plates (23) and a pair of outer link plates (24), are formed with openings to provide tool pot storage areas (23a, 24a) so that the tool pot, when stored, is parallel direction with the adjacent link connection pins 26. The center of each tool pot storage area (23a, 24a) is located on a chain pitch line passing through the centers of the adjacent connection pins 26. Further, the fulcrum (support pin 50) on which the tool pot 42 rotates is below the level of the adjacent connection pins 26 but above the bottoms of the tool pot storage areas (23a, 24a).

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: A rotating tool pot chain is capable of bending in both directions, the tool pot sweeps a relatively small area as it rotates, and the chain is capable of holding the tool pot stably. A pair of inner link plates (23) and a pair of outer link plates (24), are formed with openings to provide tool pot storage areas (23a, 24a) so that the tool pot, when stored, is parallel direction with the adjacent link connection pins 26. The center of each tool pot storage area (23a, 24a) is located on a chain pitch line passing through the centers of the adjacent connection pins 26. Further, the fulcrum (support pin 50) on which the tool pot 42 rotates is below the level of the adjacent connection pins 26 but above the bottoms of the tool pot storage areas (23a, 24a).

Abstract: At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a light beam source which is employed to scan the surface linearly during a scanning period equivalent to 1 dot during scanning. A light beam is emitted to the light beam detection unit provided on a scanning end side, by lighting the light beam source during the scanning period after elapse of a light-off period computed from a previously designed scanning speed and the predetermined distance. Based on a detection result of the light beam detection unit provided on the scanning start side and a detection result of the light beam detection unit provided on the scanning end side, scanning characteristics required of the light beam are evaluated.

Abstract: At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a light beam source which is employed to scan the surface linearly during a scanning period equivalent to 1 dot during scanning. A light beam is emitted to the light beam detection unit provided on a scanning end side, by lighting the light beam source during the scanning period after elapse of a light-off period computed from a previously designed scanning speed and the predetermined distance. Based on a detection result of the light beam detection unit provided on the scanning start side and a detection result of the light beam detection unit provided on the scanning end side, scanning characteristics required of the light beam are evaluated.

Abstract: At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a light beam source which is employed to scan the surface linearly during a scanning period equivalent to 1 dot during scanning. A light beam is emitted to the light beam detection unit provided on a scanning end side, by lighting the light beam source during the scanning period after elapse of a light-off period computed from a previously designed scanning speed and the predetermined distance. Based on a detection result of the light beam detection unit provided on the scanning start side and a detection result of the light beam detection unit provided on the scanning end side, scanning characteristics required of the light beam are evaluated.

Abstract: At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a light beam source which is employed to scan the surface linearly during a scanning period equivalent to 1 dot during scanning. A light beam is emitted to the light beam detection unit provided on a scanning end side, by lighting the light beam source during the scanning period after elapse of a light-off period computed from a previously designed scanning speed and the predetermined distance. Based on a detection result of the light beam detection unit provided on the scanning start side and a detection result of the light beam detection unit provided on the scanning end side, scanning characteristics required of the light beam are evaluated.

Abstract: A centrifugal compressor (1) including a single rotating shaft (5), a first (upstream) and second (downstream) impellers (2, 3) mounted on ends of the rotating shaft (5) respectively, and a casing (4) for accommodating these impellers. An air path (35) is provided for introducing an air pressurized by the upstream impeller (2) to the downstream impeller (3). An abradable layer (34) is embedded in the casing inner wall (4) such that it faces and is cut by the second downstream impeller (3). The expensive abradable layer (34) is only provided for the downstream impeller (3) since the effect of the abradable layer (34) is significant when provided for the downstream impeller.

Abstract: A rotary body for use in a polygonal mirror type scanner includes an element for causing the rotary body to rotate. The element is mounted to a mounting portion by press fitting while a stress ascribable to press fitting is prevented from being transferred to the side of the rotary body. The mounting portion is formed integrally with one of opposite major surfaces of the rotary body perpendicular to the side. The rotary body includes a minimum number of parts, does not need highly accurate adhesion, has high durability, and is easy to produce and free from deformation apt to occur on its side.

Abstract: A rotary body for use in a polygonal mirror type scanner includes an element for causing the rotary body to rotate. The element is mounted to a mounting portion by press fitting while a stress ascribable to press fitting is prevented from being transferred to the side of the rotary body. The mounting portion is formed integrally with one of opposite major surfaces of the rotary body perpendicular to the side. The rotary body includes a minimum number of parts, does not need highly accurate adhesion, has high durability, and is easy to produce and free from deformation apt to occur on its side.

Abstract: A scanner using a polygonal mirror includes a rotor with a magnet mounted thereon, a rotary shaft on which the rotor is mounted, and a stator with a coil facing the magnet at a preselected distance. The rotor is machined in the form of a square pillar having mirror surfaces at sides thereof to thereby form the polygonal mirror. A recess is formed in one major surface of the rotor while the magnet is press fitted in the recess. The scanner with this configuration needs a minimum number of parts, obviates the need for highly accurate adhesion and is durable and easy to produce.

Abstract: A high speed compressor (10) includes a gear box (11), two compressing units (12, 13) supported on opposite side walls of the gear box (11) and a bull gear (32) rotatably placed in the gear box (11). Each compressing unit includes a scroll (15, 16) and an impeller (18, 19) rotatably housed in the scroll (15, 16). The impellers (18, 19) share an impeller shaft (22) extending into the gear box (11). A pinion gear (23) is mounted on the impeller shaft (22) such that it engages with the bull gear (32). A drive shaft (30) extends from the bull gear (32) out of the gear box (11) along a center axis of the gear box (11). An induction motor (35) is connected with the drive shaft (30) for causing the impellers (18, 19) to rotate by way of the bull gear (32) and the pinion gear (23). An inverter (40) is connected with the induction motor (35) at its one end and with a commercial power source (43) at the other end for converting an A.C. power from the commercial power source (43) into an A.C.

Abstract: A main body structure for an underground parking lot has an outer wall formed in a substantially cylindrical shape to define a space under the ground. A radial structural body is formed in and connected to the outer wall to support the same on the inside thereof and to divide the space within the outer wall into plural vehicle accommodation spaces. The underground parking lot constructed with this main body structure includes vehicle accommodation mechanisms which are arranged in the respective vehicle accommodation spaces.

Abstract: A refuse conveyor system for a multi-floor building is disclosed, which includes: (a) a multi-floor building having a plurality of floors, (b) a vertical shaft defined by walls and extending through one or more floors of the multi-floor building, one of the walls having a window at portions corresponding to the respective floors of the multi-floor building, (c) a transport control system, (d) a refuse container for storing and conveying refuse, the refuse container having a closeable opening and a lid for closing the opening, (e) a compartment having a window on one side thereof and an opening on the top side thereof, the window facing and communicating with the window of the vertical shaft, (f) a weight sensor for checking the fullness of the refuse container with the refuse, (g) a transport mechanism for transporting the refuse container, the transport mechanism being operatively communicated with the transport control system, (h) a conveyor having a conveyor belt operatively communicated with the transport