Abstract: A method for manufacturing a heat sink for use in a heat sink fan is provided. A heat-sink base portion defining a central axis and a circumferential surface is formed. A plurality of heat-radiating fins is formed on the circumferential surface of the base portion. Each of the heat radiating fins extends away from the central axis and defines at least one radially distal edge. After the base portion and the heat-radiating fins are formed, a distal-edge protrusion or a recess is formed on or in at least one of the heat radiating fins by a machining process, so as to form partially along the envelope of the heat sink at least one discrete engagement feature.

Abstract: Tool path data generation apparatus (41) that can speedily and securely generate tool path data on the basis of CAD data. The tool path data generation apparatus (41) includes a feature data extractor (6) to extract features in relation to at least a three-dimensional shape of a workpiece, a tool/cutting data storage (8) to store a cutting mode etc. in accordance with a feature shape, a cutting method setting unit (9) to set an optimal cutting method for each feature shape on the basis of the extracted feature data and the stored tool/cutting data, and a tool path data generator (13) to generate tool path data on the basis of set cutting method. An operator doesn't have to input any data in generating tool path data, therefore tool path data can be speedily generated.

Abstract: A fluid dynamic pressure bearing having a tapered seal part provided between a sleeve and a housing, from which lubricating liquid is injected and functions as a buffer of the lubricating liquid. An end part of a radial gap between the sleeve and a shaft body is a labyrinth filled with lubricating liquid. An opening periphery is covered with an oil repellent film to prevent outflow of the lubricating liquid. These features can make the size of the tapered seal part small in the axial direction. It enables a larger radial dynamic pressure bearing mechanism to be formed and, in particular, bearing rigidity in the radial direction can be increased.

Abstract: Interference checking device including: a modeling database that stores data for three-dimensional modeling of tools, workpieces, and machine-tool constituting structures; an interference data memory for storing interference data defining inter-component interference relationships among the tool, the workpiece, and the structures; and an interference checking processor that, based on structure movement commands sent from a program analyzer for the machine tool, and on data stored in the modeling database and interference data memory, determines whether the tool, the workpiece, and the structures will interfere with each other. Movement commands in a block at least one block succeeding the block being executed in order to control the drive mechanisms that move the structures are sent from the program analyzer to the interference checking processor.

Abstract: A heat sink fan of the present invention includes a heat sink and an axial flow fan, and the axial flow fan includes a motor, an impeller and a housing. An outer wall surface of a cylindrical portion of the housing is formed with an arm which engages with the heat sink and fixes the housing and the heat sink. The arm is provided with a lead wire retaining hook. A interspace is formed between the lead wire retaining hook and the arm, and the lead wire is detachably held in the interspace. The packing or transportation operation is enhanced, and convenience of mounting operation of the lead wire to electronic equipment is enhanced.

Abstract: A method for etching a silicon substrate is presented in which fast etching speed and etching structures with smooth and perpendicular wall surfaces are achieved. In the etching step, a constant electric power is applied to the silicon substrate to provide a bias potential. Using a mixture of SF6 gas and fluorocarbon gas, there is a step mainly for the progression of dry etching of the etching ground surface. Similarly, using a mixture gas, there is a step mainly for forming a protective layer on the structure surfaces which are perpendicular with respect to the etching ground surface. These two steps are repeated one after the other. In the step for dry etching, the mixture gas is 5–12 volume of fluorocarbon gas with respect to 100 volume SF6 gas. The mixture gas in the protective film formation step is a mixture of 2–5 volume of SF6 gas with respect to 100 volume fluorocarbon gas.

Abstract: A centrifugal fan comprises an impeller, a motor which is connected and rotates the impeller and a housing which has an intake and an air blowing port for housing the impeller. The impeller has a plurality of blades arranged on a circumference. The intake opens opposed to the right end (in FIG. 1) of the impeller. The air blowing port opens opposed to a side of the impeller. A gap enlarged portion, in which the distance between the outer circumference of the impeller and the inner face of the housing starts to increase at a point where the distance between the outer circumferential of the impeller and the surface of a nose portion is smallest therein, the nose portion being a region of the vicinity of an edge portion of the air blowing port, the edge portion being the closest side to the outer circumference of the impeller.

Abstract: Machine tool having a bed, a table arranged on the bed, a first saddle provided free to travel back and forth, a second saddle supported on the first saddle and provided free to travel side to side, a spindle head provided free to travel perpendicularly on the second saddle, a main spindle situated above the table and by the spindle head supported free to rotate on its center axis, a front cover provided on the front side of the bed and furnished with doors that open and close sideways, and top covers configured with one end sideways shiftably connected to the front side of the first saddle, and with another end connected extensibly/retractably to the top of the front-cover doors, therein being configured for permitting back-and-forth-directed movement of the first saddle.

Abstract: Machine tool with: a bed furnished with a base and two side walls provided standing along respective left and right sides of the base; a first saddle composed of a rectangular frame, with vertical sides provided perpendicularly and transverse sides provided sideways, and both ends of the frame sideways being supported on rear faces of the side walls so as to be perpendicularly movable; a second saddle arranged within the first-saddle frame and provided to be movable sideways, and having a front-to-rear penetrating through-hole; a spindle head arranged in the second-saddle through-hole and provided to be movable back-and-forth; a tool-retaining spindle supported, by the spindle head, with its axis paralleling the front-to-rear orientation and rotatable about its axial center; and, arranged on the bed, a table on which workpieces are set.

Abstract: According to the invention, a shaft as a component of a shaft member of a hydrodynamic bearing and a disc member such as a thrust plate are joined to each other by welding by a simple method with high precision. A shaft having a cylindrical outer circumferential surface, in joint surfaces which are joined to each other of the shaft and a disc member having a flat surface facing an end surface of the shaft, a circumferential projection having a diameter smaller than the outside diameter of the shaft and projected in the axial direction and a recess at least of which outer periphery has a diameter smaller than the outside diameter of the shaft and larger than the diameter of the projection and has a circular shape are provided.

Abstract: The invention provides shoes for the elderly and disabled that are easy to put on and remove, that fit comfortably, and that are fashionable. This invention is a shoe with a slide fastener that zips open horizontally along the edge of the upper, with the upper being detachable along the edge of the outsole from the outside of the ankle to the base of the big toe, and with a slide fastener that is attached horizontally along the edges of the upper and the outsole from the base of the big toe to the outside of the ankle. Fastening tapes A and C (hook strips) are attached at the pull-tab of the slide fastener and the edge of upper, respectively, and second fastening tape (loop strip) is attached at the quarter in line with the other hook strips. A composite of polychloroprene rubber foam glued together with synthetic fabric is used as material for the upper. An ornamental design made of the same material as the upper, but in different color and texture, is attached to the upper.

Abstract: A heat sink fan includes a heat sink (2) that is placed on a heat generating electrical component and a fan motor unit (4) having an axial flow fan (18) for supplying cooling air to the heat sink (2). A engaging portions (14a) of an arm portions (14) of the fan motor unit (4) is engaged with a recesses (10b) of the heat sink (2). Thus, movement of the fan motor unit (4) in the axial direction of the heat sink (2) is restricted so that the fan motor unit (4) is attached to the heat sink (2) securely.

Abstract: A case that is used for an electronic or electric device has an opening portion arranged at a vicinity of a fan motor that generates airflow inside and outside the case. The opening portion has a protection portion for preventing a finger or other matters from entering the fan motor. The protection portion includes a first rib group extending linearly in a lateral direction, a second rib group extending linearly in a second direction vertical direction. Each of the ribs has an inclined surface that is along a direction of the airflow exhausted from the fan motor and faces the inside or the outside of the opening portion.

Abstract: A suitable the inner point is set on a vapor-liquid face of lubricating fluid formed in a composite capillary seal section that utilizes capillary force and rotational centrifugal force acted on the lubricating fluid. An inner peripheral surface of a ring-shaped portion is formed such that the minimum value R1 in radial-direction distances of the inner peripheral face of the ring-shaped portion becomes greater than a radial-direction distance R2 of the inner point (R1>R2). This can observe the inner point of the lubricating fluid from the immediately-above position, whereby the filling amount of the lubricating fluid can easily and surely be measured, thereby being capable of adjusting the filling amount of the lubricating fluid to a preset amount.

Abstract: Physical-health tuning means that may adjust and bring into harmony physical health—that in particular may improve physical health out of sorts due to electromagnetic-wave harm—are presented. The physical-health tuning means include: (A) a plurality of bar magnets whose obverse sides are N poles and whose reverse sides are S poles, running lengthwise; (B) wire that is non-magnetic yet electroconductive; and (C) a shaping support material. The wire is arranged coiling the magnet obverse faces in right-hand turns from one end to the other end of the bar magnets in the lengthwise direction. The plurality of magnets onto which the wire is wound are disposed to form a tubular hollow with the N-pole faces adjoining the S-pole faces in alternation, and the shaping support material being put on the outside of this assembly. Combined use with rhombohedral system crystalline substances can increase efficacy.

Abstract: A method of manufacturing a fluid dynamic bearing in which a stopper is fixed by welding. The bearing comprises a hub, a shaft erected on the hub, a sleeve, a cylindrical wall erected on the hub, and the stopper mounted on the cylindrical wall. The method comprises a first step to hold oil in the bearing gap, and a second step to locate the stopper on the peripheral wall being apart from the interface of the oil to fix the stopper by LASER welding.