Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.

Abstract: Acrylic fiber which can be produced industrially at a low cost and has excellent appearance properties that the individual fibers are clearly perceived visually is provided. The object is attained by using an acrylic fiber comprising an acrylic copolymer, which has a light transmittance of 15 to 65% in the fiber width direction and a maximum surface reflectance of 30 to 80% with respect to light incident thereon at an angle of 60 degrees in the fiber length direction, wherein the fiber contains 1.2 to 30 parts by weight of white pigment having a maximum particle size of at most 0.8 ?m based on 100 parts by weight of the acrylic copolymer.

Abstract: The present invention provides a pile fabric comprising at least a long pile portion and a short pile portion to form a step, the pile fabric having a specific pile portion other than the long pile portion, which contains at least 3% by weight of an acrylic fiber (A) based on the entire pile portion, wherein the acrylic fiber (A) has a transmittance of light in a range of 15 to 70% in a direction of width of the fiber and a maximum surface reflectance of light in a range of 30 to 80% at an incident angle of 60 degrees in a direction of length of the fiber, and the pile fabric obtained thereby has an animal hair-like appearance with a distinct step.

Abstract: The present invention relates to an antimicrobial artificial hair fiber, having favorable combing property and touch feeling and resistant to the deterioration of antimicrobial activity by shampooing, and an artificial hair fiber bundle and a hair decorative product using the same. The artificial hair fiber is an artificial hair fiber comprising a synthetic fiber, wherein the synthetic fiber is coated with a silicone, and at least one guanidine salt compound selected from polyhexamethylene biguanidine salt and polyhexamethylene guanidine salt is deposited on a surface of the silicone.

Abstract: An acrylic shrinkable fiber that can be dyed at a low temperature, and has a high shrinkage percentage even after drying is provided. A dyeable acrylic shrinkable fiber comprising 50 to 99 parts by weight of a polymer (A) comprising 80 to 97 wt % of acrylonitrile, 0 to 2 wt % of a sulfonic acid group-containing monomer and 3 to 20 wt % of a monomer copolymerizable with the monomers; and 1 to 50 parts by weight of a polymer (B) comprising 0 to 89 wt % of acrylonitrile, 1 to 40 wt % of a sulfonic acid group-containing monomer and 10 to 99 wt % of a monomer copolymerizable with the monomers, wherein the polymers (A) and (B) are 100 parts by weight in total is provided.

Abstract: An object of the present invention is to provide a dyeable acrylic shrinkable fiber that only slightly shrinks when dyed and has a high shrinkage percentage even after dyeing. By spinning an incompatible spinning solution, the above object can be achieved, and a dyeable acrylic shrinkable fiber that only slightly shrinks when dyed and has a high shrinkage percentage even after dyeing can be provided.

Abstract: An increased number of colors can be assorted in the down hair part of a step pile fabric more easily than before by carrying out dry heat treatment of a pile fabric comprising an acrylic shrinkable fiber that can be dyed in a specific low-temperature region. There is provided a step pile fabric obtained by treating a pile fabric comprising an acrylic shrinkable fiber, which comprises comprising an acrylic copolymer comprising 0.5 to 10 wt % of a sulfonic acid group-containing monomer, dyed at 55 to 85° C., with dry heat at 110 to 150° C. for 20 minutes or less, the acrylic shrinkable fiber having a shrinkage percentage of 18% or more calculated by the following formula (1): Shrinkage percentage (%)=100×(1?Sa/Sb)??(1) wherein Sb represents a pile length of the down hair component before the dry heat treatment, and Sa represents a pile length of the down hair part (component) after the dry heat treatment.

Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.

Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.

Abstract: The present invention aims at providing a pile fabric that has excellent voluminous touch and recovery property while exhibiting soft touch, and touch closely equivalent to natural furs. The present invention relates to a pile fabric having a level difference comprising at least a longer pile part and a shorter pile part, wherein a fiber with a flat cross section shape as a shorter pile part is included at a percentage of 30% to 70% by weight to a total weight of the pile part, a difference between an average pile length of the longer pile part, and an average pile length of the shorter pile part is 1 mm to 5 mm, a fineness of a fiber constituting the longer pile part (DL) is in a range of 0.7 dtex to 8 dtex, and a ratio with respect to a fineness of a fiber constituting a shorter pile part (DS) satisfies a relationship of 0.1<(DL/DS)<1.0.

Abstract: Porous acrylic fibers produced by a method comprising subjecting a spinning dope containing 0.3 to 20 parts by weight of poly(vinyl acetate) relative to 100 parts of an acrylic copolymer to a wet spinning to give fibers, crimping and cutting the fibers, subjecting the resultant fibers to a treatment by hot water at 90 to 100° C. for 30 to 120 minutes or by saturated steam at 90 to 130° C. for 10 to 90 minutes to thereby form porous fibers; and a pile fabric having pile portions which comprise the porous fibers in an amount of 3 wt % or more, and, in the pile fabric, respective single fibers are visible being separate and emphasized, and thus the pile fabric has an appearance being highly decorative and excellent in design characteristics.

Abstract: The present invention provides a pile fabric comprising at least a long pile portion and a short pile portion to form a step, the pile fabric having a specific pile portion other than the long pile portion, which contains at least 3% by weight of an acrylic fiber (A) based on the entire pile portion, wherein the acrylic fiber (A) has a transmittance of light in a range of 15 to 70% in a direction of width of the fiber and a maximum surface reflectance of light in a range of 30 to 80% at an incident angle of 60 degrees in a direction of length of the fiber, and the pile fabric obtained thereby has an animal hair-like appearance with a distinct step.

Abstract: Acrylic fiber which can be produced industrially at a low cost and has excellent appearance properties that the individual fibers are clearly perceived visually is provided.

Abstract: A disk driving apparatus solves such problems that the position of a rotor is unstable and likely to float, and the rotor is displaced when an excessive acceleration is applied thereto, so that a hydrodynamic bearing mechanism can be used. This apparatus uses a single surface opposing type mechanism in a thrust bearing of a motor. It has a device using a magnetic attraction force to stabilize the position of the rotor and various devices for limiting the amount of movement of the rotor, in which devices members which physically contact the rotor and lock in are provided. As a result, a thrust bearing mechanism can be formed by use of a single surface opposing type thrust bearing which is simple in construction. Advantages such as low height, simplicity in construction, low price, or low consumption of power can be obtained. In particular, the feature of low height is extremely advantageous when a hydrodynamic bearing is used in a thin type apparatus.

Abstract: A programmable controller includes a main processor connected to I/O and peripheral devices for sequential control thereof in a programmed manner. The main processor is associated with a system memory which stores an operating system for the main processor as well as provides a work area used in the operation thereof. A source instruction memory is provided to store a source program for control of the I/O and peripheral devices. The source program is compiled by the main processor into a program including corresponding reduced instructions and stored in an coprocessor instruction memory. A coprocessor is included to retrieve the instructions from the coprocessor instruction memory to execute the instructions in a pipeline mode and in parallel with the execution of the main processor. A data memory is provided for instruction execution of the coprocessor.

Abstract: A vessel for aerosol is manufactured by a high-nitryl resin which is formed by graft polymerizing a mixture of monomers of a 60 to 90 weight part comprising an unsaturated nitryl compound of at least 60 weight % and an aromatic vinyl compound of at least 5 weight % to diene synthetic rubber of a 1 to 40 weight part containing a conjugated diene monomer of 50 weight % or more, wherein assuming that a content of the unsaturated nitryl compound in the resin grafted to the rubber is set to X weight % in the high-nitryl resin and a content of the unsaturated nitryl compound in the matrix resin is set to Y weight %, the vessel is manufactured by the resin which satisfies the relation of60<X<Y<90between X and Y.

Abstract: A safety apparatus for a combustion engine includes a rotary member disposed in a rotating portion of the internal combustion engine, a spiral spring supported by the rotary member at one end and biasing the rotary member in a predetermined direction, an engaging member engaging with the other end of the spiral spring, a housing for receiving the spiral spring, and a guide member arranged over at least the outer side periphery of the overlapping portion of the spiral spring and extending along the circumferential direction of the spiral spring to prevent the spiral spring from expanding in diameter. With this construction, when breakage is caused in the spiral spring, hooking of the broken end onto the engaging member can be prevented by the guide member. Therefore, it can prevent the throttle valve from being biased toward opening direction by the broken spiral spring.

Abstract: There is provided an injection molding apparatus of the screw in-line type which has a screw having the following structural features and is used for injection-molding a high-nitryl resin.(1) A compression ratio is set to a value of 1.8 to 2.5.(2) Ratios of the lengths of the feed section, the compression section, and the metering section are set to[1 to 1.5]:[1.8 to 2.8]:[1].(3) A depth T (unit:mm) of groove of the metering section in relation to an inner diameter D (unit:mm) of the cylinder is set toT.gtoreq.0.057D-0.2.(4) A radius of curvature R (unit:mm) of the arc surface of the rear side corner portion which is formed between a screw shaft and a flight in relation to the inner diameter D (unit:mm) of the cylinder is set toR.gtoreq.0.36D+2.0.

Abstract: A vessel according to the invention has a double-layer structure in which a vessel wall is constructed by an inner layer made of a special high-nitryl resin having excellent chemical resistance, gas barrier property, and the like and an outer layer made of a synthetic resin having excellent heat resistance, shock resistance, and the like. The vessel is suitable for use as a vessel for aerosol.

Abstract: A fuel injector to be mounted on a branch of an engine intake manifold has a hollow body with an injection orifice therein and a valve member mounted slidably in the body and having a pintle extending from one end of the valve member and slidably received in and extending through the injection orifice. A sleeve member is mounted on the body to cover the injection orifice and defines a pintle-receiving space into which the forward end of the pintle extends. Communication apertures are formed in the outer end of the sleeve member to communicate the pintle receiving space with an engine intake passage. The total of the cross-sectional areas of the communication apertures is smaller than the cross-sectional area of the pintle-receiving space.