Abstract: An insulative resin coating film 9 of the range of 10 to 40 &mgr;m thick is formed, by electrodeposition coating, on the outer surface of a pulley 2 inclusive of an outer surface 2E of the iron pulley 2 which is in sliding contact with a belt 3 and an inner surface 2I fit to a rotary shaft 4. With formation of the insulative resin coating film, an electrical resistance after 10 hours of the unit running is 1M&OHgr; or larger. A static electricity caused by a friction between the pulley 2 and the belt 3 is −1kV or lower. As a result, a potential difference between the rolling element and the race ring (outer ring or inner ring) is 1V or lower.

Abstract: As a steel material for an inner race, an outer race and a rolling element constituting a rolling bearing, there is used one containing carbon (C) and chromium (Cr) in an amount of 0.65 wt % to 1.10 wt % and 2.0 wt % to 6.0 wt %, respectively. At least one of the inner race, the outer race and the rolling element is formed from the steel material. The inner race, outer race and the rolling element thus formed is then subjected to hardening, tempering and polishing. Further, a chromium oxide layer (Cr2O3) having a thickness of 5 nm to 300 nm is formed on a race track surface of at least one of the inner race, the outer race and the rolling element. If the rolling bearing is used in operation under the lubrication at a high traction coefficient with water mixed therein, finely particulate molybdenum carbide and/or vanadium carbide having a particle diameter of 50 nm to 300 nm is distributed in the matrix.

Abstract: An induction-hardened rolling bearing device used by disposing rolling elements in a raceway track member, with excellent cold drawability and improved wear resistance and extended service life, in which ingredients of an alloy for the raceway track member contain, from 0.40 to 0.90% of C, from 0.05 to 0.80% of Si, from 0.10 to 2.0% of Mn, from 0.05 to 0.50% of Ti and 0.03% or less of N, on the weight basis, induction hardening is applied at least to the raceway surface of the raceway track member, and Ti carbide and Ti carbonitride each having an average particle diameter of from 5 to 100 nm are dispersed on the surface and in the steels of the raceway track member to make the hardness of the raceway surface to HRC 59 or more.

Abstract: An outer ring 2 as a stationary ring is fabricated with an iron-steel material of the following composition. Alloying components contain carbon (C) 0.40 wt % to 1.20 wt %, silicon (Si) and/or aluminum (Al) 0.7 wt % to 2.0 wt %, manganese (Mn) 0.2 wt % to 2.0 wt %, nickel (Ni) 0.1 wt % to 3.0 wt % and chromium (Cr) 3.0 wt % to 9.0 wt %. Cr-equivalent amount shown in the following (1) formula is 9.0 wt % to 17.0 wt %. In the bearing face, the hardness is HRC57 or higher, fine carbides (diameter 50 to 500 nm) are dispersively precipitated, and the maximum diameter of carbide is less than 10 &mgr;m.

Abstract: An outer ring 2 as a stationary ring is fabricated with a steel material having the composition as shown under. The steel material contains, as alloying elements, C 0.80 to 1.10 wt %, Si 0.20 to 0.50 wt %, Mn 0.2 to 1.0 wt %. It also contains any two kinds or more of Cr, Mo and V at rates of Cr: 1.2 to 3.5 wt %, Mo: 0.5 to 1.5 wt % and V: 0.2 to 1.0 wt %. The containing rates of Cr, Mo and V satisfy the under mentioned formula (1). It further contains Ti and/or Cu at rates of Ti: 0.05 to 0.20 wt % and Cu: 0.2 to 2.

Abstract: An inner ring 3 of the rolling bearing is formed by a steel material having the following composition. This steel material contains as alloying constituents C, Si, Mn and Cr in an amount of from 0.65 to 1.20% by weight, from 0.10 to 0.70% by weight, from 0.20 to 1.20% by weight and from 0.20 to 1.80% by weight, respectively, and has an oxygen content of not more than 16 ppm. The content of retained austenite left after heat treatment is from 0 to 6% by volume and the surface hardness HRC of the bearing surface is from not less than 57 to not more than 65. Accordingly, it is possible to drastically prolong the lifetime of a rolling bearing operating under high vibration and load such as bearing for alternator.

Abstract: A rolling bearing having a plurality of rolling elements located between a fixed race and a rotating race, wherein at least one of bearing components comprising the fixed race, rotating race and rolling elements is made of a steel which contains from 0.05 to 0.40% by weight of at least one selected from the group consisting of Ti, Nb and Al along with from 0.65 to 1.20% by weight of C, from 0.05 to 0.70% by weight of Si, from 0.2 to 1.5% by weight of Mn, from 0.15 to 2.0% by weight of Cr, not more than 01.01% by weight of N and unavoidable contaminating elements and wherein particles of at least one of Ti carbide, Ti carbonitride, Nb carbide, Nb carbonitride and Al nitride are dispersed and deposited at least in the vicinity of the surface of the at Least one of bearing components.

Abstract: At least one of input/output disks, a power roller and a cam disk of a toroidal type continuously variable transmission is formed of a high-cleanness steel in which a size of a maximum inclusion is estimated by the following extremum statistical process. In step S1, a plane including a central line of the high-cleanness steel is cut out in a direction of rolling of the high-cleanness steel. In step S2, a portion d of the cut-out cross-section, which is defined by 40% of a diameter D in the vicinity of the central line, is used as a to-be-tested surface. In step S3, a test reference area S.sub.0 is set at an area not less than 300 mm.sup.2 within the to-be-tested surface, and a root of an area of the maximum inclusion is measured five times or more. In step S4, a maximum inclusion distribution straight line is obtained. In step S5, the root, that is, the size of the area of the maximum inclusion within an estimation area S is estimated.

Abstract: In the dyeing of hydrophobic fibers comprising new synthetic fibers, especially those called micronfine fibers, etc., it is difficult to obtain a dyed product having excellent fastness and it is further difficult to obtained a dyed product excellent also in color rendering. The present invention solved the problem as following:A specific dye composition containing a water-insoluble monoazo disperse dye represented by a specific structural formula is used to dye hydrophobic fibers, especially polyester fibers, comprising micronfine fibers, thereby giving a dyed products excellent in fastness balance and color rendering.

Abstract: A ball bearing in which races are well prevented from flaking in early stages under an environment using lubricating oil having a high traction coefficient so that a long life of the ball bearing is attained, while the cost of the bearing is reduced. The ball bearing has a plurality of balls disposed between a fixed race and a rotating race, and the ball bearing is used under an environment using lubricating oil having a traction coefficient of 0.07 or more under the conditions that a slip factor is 5% and a temperature is 40.degree. C. At least the groove radius of the rotating race is set to be in a range of from 0.53 Dw to 0.58 Dw both inclusive when Dw designates the diameter of balls. In addition, the hardness of the race is set to be in a range of from HRC 58 to HRC 64 both inclusive.

Abstract: A deep-raceway ball bearing 1 as a ball bearing includes an inner ring 2, an outer ring 3 and a rolling element 4. The inner ring 2 is annular as a whole and circular in cross section. A rotary shaft 5 is fastened to the inner peripheral surface of the inner ring 2. The outer ring 3 is annular as a whole and circular in cross section, and larger in inside diameter than the inner ring 2. A plural number of rolling elements 4 are disposed in reliable fashion between the inner ring 2 and the outer ring 3, while being in contact with the outer peripheral surface 6 of the inner ring 2 and the inner peripheral surface 7 of the outer ring 3. The outer peripheral surface 6 of the inner ring 2, while extending in the circumferential direction thereof, is curved inward to form an inner raceway 8 circular in cross section. The inner peripheral surface 7 of the outer ring 3, while extending in the circumferential direction thereof, is also curved inward to form an outer raceway 9 circular in cross section.

Abstract: Disclosed is a rolling bearing comprising races and rolling elements, in which at least one of the races and the rolling elements has at least one of a carbide and a carbonitride precipitated in a surface layer thereof, inclusive of a cutting allowance, wherein the finished surface of at least one of the races and the rolling elements has a hardness of Hv600 to Hv700 at 300.degree. C. The rolling bearing has reliable wear resistance under severe conditions and thereby having an extended bearing life.

Abstract: This invention related to a novel .beta.-crystal of the compound represented by the following formula (1), ##STR1## which is useful as a dyestuff. The .beta.-crystal of this invention is characterized by being stable in high temperature and having sharp peaks in the powder X-ray diffractometory.This invention is related to a process for producing a said .beta.-crystal, said process comprising heating a known thermally unstable .alpha.-crystal at a temperature higher than 15.degree. C., preferably higher than 40.degree. C. in water, a water-soluble organic solvent, or a solvent comprising water containing an anionic or nonionic surface active agent.Furthermore, this invention is related to a dyestuff composition containing of the said .beta.-crystal, and a process for dyeing comprising employing the said .beta.-crystal.

Abstract: Disclosed is a disperse dye composition comprising dyes of Formulae (I) and (II). ##STR1## Z.sub.1 is a halogen atom; R.sub.1 is a C.sub.1-4 alkyl group or a hydrogen atom; X.sub.1 and Y.sub.1 each are independently a chlorine atom or a bromine atom; R.sub.2 is a C.sub.1-4 alkyl group or a phenyl group. Using the composition, composite hydrophobic fiber materials can be dyed evenly, and the dyed materials have excellent color fastness.

Abstract: A bearing steel includes 0.70 to 0.93 wt % of C, 0.15 to 0.50 wt % of Si, 0.50 to 1.10 wt % of Mn and 0.3 to 0.65 wt % of Cr, with the balance being Fe and incidental impurities, and it has the ratio Cr/C specified to fall within 0.4 to 0.7. Because of these compositional features, the generation of macro carbides is prevented and the need to perform soaking at high temperature for a prolonged time is eliminated. Further, the bearing steel saves the materials cost and the overall cost of heat treatments in the manufacture of bearings and which yet is capable of satisfying the requirements of various characteristics of bearings, as well as a rolling bearing that employs the bearing steel.

Abstract: A bearing steel is provided which can satisfy bearing property requirements and, at the same time, is improved in mechanical properties, such as impact, crushing, and transverse properties, while reducing the cost of materials and the cost of heat treatment for the production of a bearing. The bearing steel comprises by weight C: 0.70 to 0.93%, Si: 0.15 to 0.50%, Mn: 0.50 to 1.10%, Cr: 0.30 to 0.65%, and N: 0.005 to 0.02% with the balance consisting of Fe and unavoidable impurities and 0.4.ltoreq.Cr/C.ltoreq.0.7, the steel further comprising at least one of (1) Al: 0.01 to 0.1% with Al.times.N.gtoreq.0.00015 and (2) Nb: 0.02 to 0.1%. A rolling bearing produced from the bearing steel is also provided.

Abstract: A disperse dye composition comprising one or more dyes represented by the formula: ##STR1## wherein X represents a chlorine or bromine atom; Y a hydrogen atom or an alkoxy or alkoxyalkoxy group; and each of R.sub.1 and R.sub.2 independently a hydrogen atom, a linear or branched unsubstituted or substituted alkyl group, an allyl group or a cycloalkyl group, provided that each of the alkyl and alkoxy groups has 1 to 4 carbon atoms, anda dye represented by the formula: ##STR2## wherein Y represents an alkoxy or alkoxyalkoxy group; each of R.sub.1 and R.sub.2 independently a hydrogen atom, a linear or branched unsubstituted or substituted alkyl group, an allyl group or a cycloalkyl group, and R.sub.3 an alkyl group, provided that each of the alkyl and alkoxy groups has 1 to 4 carbon atoms.

Abstract: The difference signal indicating a difference between the output of the horizontal deflection circuit unit and a desired horizontal raster signal is converted into a digital signal corresponding to the difference signal by the A/D converter. The converted digital signal is outputted to the digital signal processor. The digital signal processor performs a feedback control of raster width by digital operations. The digital signal processor outputs the result signal of the operation to the D/A converter where the result signal is converted into an analog result signal. The analog signal is sent to the horizontal deflection circuit unit where the power to be supplied to the deflection yoke is controlled.

Abstract: An electrophotographic photoconductor includes an electroconductive support and a photoconductive layer formed thereon containing a diamine compound represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each is independently a substituted or unsubstituted alkyl group or aryl group; R.sup.4 is hydrogen, an alkyl group or an alkoxyl group; n is an integer of 1 to 3; and ##STR2## is a substituted or unsubstituted bivalent arylene group or a bivalent heterocyclic group. This diamine compound is useful as a photoconductive material for electrophotographic photoconductors.

Abstract: There are provided a hydrazone compound represented by formula (I), an electrophotographic photoreceptor which has a photosensitive layer containing the compound on an electrically conductive support, and an organic electroluminescent element containing the compound as a charge transporting material: ##STR1## wherein Ar.sub.1 represents a substituted or unsubstituted phenylene group, a substitued or unsubstituted naphthylene group, a substitued or unsubstituted biphenylene group, or a substituted or unsubstituted anthrylene group, Ar.sub.2 represents a substituted or unsubstituted aryl group, R.sub.1 and R.sub.2 each independently represents a hydrogen atom, a halogen atom, an unsubstituted alkyl group, or an unsubstituted alkoxy group, R.sub.3 represents an unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group, Z represents an ethylene group or a vinylene group, and n is 0 or 1.