Abstract: There is disclosed a coating composition comprising a binder component consisting of (A′) hydroxyl group-containing polyester resin having a number average molecular weight of 2,000-20,000, glass transition temperature of −40° C. to 30° C. and hydroxyl value of 5-95 mgKOH/g, (B) blocked polyisocyanate compound blocked with &egr;-caprolactam, and the equivalent ratio of the blocked isocyanate groups in said blocked polyisocyanate compound (B)/the hydroxyl groups in said polyester resin (A) being in the range of 0.7-1.2, and 0.5-30 parts by weight of said resin fine particles (C) with an average particle diameter of 8-70 &mgr;m, which do not completely melt at the time of coating film curing, per 100 parts by weight of said binder component. Said coating composition can form a coating film having excellent popping resistance. hardness, processibility, anti-tackiness, blocking resistance and curability by a high temperature short time baking.

Abstract: A bright and dark field switching device, according to the present invention, comprises a glare-proof filter 31 and a condenser lens 32 for a dark field, a guide mechanism 40, and a switching mechanism 60. The glare-proof filter 31 and the condenser lens 32 for a dark field are arranged on both sides with an optical path L of an illuminating optical system interposed therebetween. The guide mechanism 40 holds the glare-proof filter 31 and the condenser lens 32 for a dark field such that they can be moved to the optical path L and can be returned from the optical path L. The switching mechanism 60 moves the glare-proof filter 31 and the condenser lens 32 for a dark field to the optical path L and returns them from the optical path L. Further, the switching mechanism 60 moves the glare-proof filter 31 together so as to position the same on the optical path L only when returning the condenser lens 32 for a dark field from the optical path L.

Abstract: A feeding mechanism for moving a table relative to a base has a pair of pulley (301, 302, 401, 402) supported by either one of the table (21) and the base (22), a loop-shaped belt (303, 403) stretched between the pulleys and having a part thereof extending in a movement direction of the relative movement, a joint (304, 404) for connecting the other one of the table and the base with the belt, and a pinch mechanism (310, 410) provided to the either one of the table and the base to hold a part of the belt.

Abstract: A polyamide with excellent stretching properties is disclosed, which comprises 50 to 99.8 mol % of a unit derived from a lactam and/or an aminocarboxylic acid, 0.1 to 25 mol % of a unit derived from a dicarboxylic acid, and 0.1 to 25 mol % of a unit derived from a diamine component containing 10 to 100 mol % of at least one compound selected from the group consisting of a branched saturated diamine having 6 to 22 carbon atoms, a branched alicyclic diamine having 6 to 16 carbon atoms, and a norbornanediamine.

Abstract: A testing board for testing the electric characteristics of semiconductor integrated circuit elements by applying a voltage to each of the testing electrodes of the semiconductor integrated circuit elements comprises a wiring board having a wiring layer at the surface thereof opposing the semiconductor integrated circuit elements. An elastic sheet is disposed in spaced relation to the opposing surface of the wiring board. Probe terminals are disposed on the surface of the elastic sheet opposing the semiconductor integrated circuit elements to correspond to the testing electrodes. A conductive wire has both end portions joined to the wiring layer of the wiring board and a middle portion spaced from the opposing surface of the wiring board. An elastic member for biasing the conductive wire such that the middle portion of the conductive wire is brought into contact with the probe terminal is disposed between the wiring board and the conductive wire.

Abstract: This invention provides a paint composition which comprises a film-forming resin component comprising from 65 to 95 parts by weight of a hydroxyl-containing polyester resin (A) having a number average molecular weight of from 1,500 to 35,000, a glass transition temperature of from −30° C. to 60° C. and a hydroxyl value of from 3 to 100 mg KOH/g; and 5-35 parts by weight of a melamine resin crosslinking agent (B) which is a methylolated melamine resin whose methylol groups are alkyl etherified, at least 20% of the total number of methylol groups therein having been etherified with a C6-C12 alkyl group; and (C) 0.1 to 2.0 parts by weight, per 100 parts by weight of the total resin component, of a curing catalyst. The paint composition excels in popping resistance, and can form paint film of favorable hardness, formability, curability (solvent resistance) and adhesion.

Abstract: A crystal oscillation circuit includes a main oscillation circuit, an auxiliary oscillation circuit, and a control circuit. The main oscillation circuit has a crystal resonator. The auxiliary oscillation circuit increases an exciting current of the crystal resonator to assist the start of oscillation of the main oscillation circuit. The control circuit connects the auxiliary oscillation circuit parallel to the main oscillation circuit at the start of oscillation to increase an exciting current of the crystal resonator.

Abstract: The invention offers a connector which does not require a sheet or suction aid to be attached to the connector when conveying the connector using a suction nozzle.

Abstract: The present invention provides a coating composition capable of forming, on a zinc or zinc alloy plated steel plate subjected to a chromate chemical treatment, a coating film superior in processability, corrosion resistance, adhesive property, impact resistance, scratch resistance, etc. This composition comprises:(A) a polyester resin having a glass transition temperature of -25.degree. C. to 35.degree. C., a number-average molecular weight of 1,000-35,000 and a hydroxyl value of 3-80 mgKOH/g,(B) a melamine resin curing agent which is a methyl-etherified melamine resin, or a mixture of a methyl-etherified mel amine resin and a butyl-etherified melamine resin,(C) a rust preventive pigment, and(D) organic polymer fine particles,wherein the proportions of the individual components are:(A) 60-95 parts by weight,(B) 5-40 parts by weight,(C) 1-50 parts by weight per 100 parts by weight of the total of (A) and (B), and(D) 2-40 parts by weight per 100 parts by weight of the total of (A) and (B).

Abstract: A distance measuring device having an improved control performance in a compact body by simplifying a structure for scanning a laser beam and a method of controlling the scanning. The device has a mirror for scanning an emitted laser beam, an axis around which the mirror is swung, a permanent magnet which swings along with the mirror, a core disposed opposite to the permanent magnet, a coil provided in the periphery of the core, a Hall element for detecting a swing angle of the mirror, and a circuit for controlling swing motion with a signal derived from a swing waveform formed in a predetermined shape in order to control a current in the coil, and a control signal formed by a controlled variable calculated from a deviation between a predetermined position of the mirror and a detected position.

Abstract: The direct synthesis of methylchlorosilanes to react metallic silicon with methyl chloride in the presence of a copper catalyst yields a high-boiling fraction of methylchlorodisilanes as by-products. The invention provides a method for preparing monosilanes from the high-boiling fraction by reacting it with hydrogen chloride in the presence of an amine or amide catalyst. The reaction is effected under the condition that the amount of iron, aluminum, zinc, tin and compounds thereof present in the reaction system is less than the equimolar amount with respect to the catalyst. This increases the conversion of disilanes into monosilanes.

Abstract: A coating composition for coating metal plates comprising a hydroxyl group-containing polyester resin having a number average molecular weight of 1,500 to 30,000, a glass transition temperature of -20.degree. to 40.degree. C. and a hydroxyl value of 3 to 50 mg KOH/g; a melamine resin curing agent comprising a methyl etherified melamine resin and a butyl etherified melamine resin; a curing catalyst comprising an optionally neutralized sulfonic acid compound; a secondary amine compound having a boiling point of 30.degree. to 250.degree. C.; and optionally titanium dioxide.

Abstract: Disclosed herein is a distance measuring apparatus comprising an irradiation unit for generating an electromagnetic wave, a receiving unit for receiving a reflected wave of the electromagnetic wave reflected by an object of measurement and generating a reception signal, and a propagation delay time measuring unit for measuring a propagation delay time by counting the number of pulses of a pulse train having a predetermined frequency. The propagation delay time is the time between the time that the irradiation unit irradiates the electromagnetic wave and the time that the reflected wave is received by the receiving unit.

Abstract: A tank 1 having a valve 6 in a head portion 4 and protected by a substantially cylindrical head skirt portion 7 is accommodated in a protective container 2. A load receiving member 23 having a projection 23c, to which a free end 7a of the head skirt portion 7 is fixed, is disposed between the head skirt portion 7 and the head support member 11. The head support member 11 is formed into a triple-layer structure formed by stacking, when viewed from the tank, a first layer having strong deformation resistance, and second and third layers 15 and 16 having weak deformation resistance. The second layer 15 includes an annular outer layer 15a having deformation resistance weaker than that of the first layer and an inner layer 15b fitted in the central space and having much weaker deformation resistance. The third layer 16 is made of the same material as that of the outer layer of the second layer. A rotation-stopper 20 is provided for the head skirt portion 7 so as to be attached to the protective container 2.

Abstract: A distance measuring apparatus for a vehicle including: an irradiating means for emitting and irradiating an electromagnetic wave; a receiving means for receiving a reflected wave produced when the electromagnetic wave is reflected by an obstacle and generating a receiving signal; a propagation delay time period measuring means provided with a comparison value set such that a value for a comparison reference is larger in a case in which a propagation delay time period from irradiating to receiving the electromagnetic wave is shorter than in a case in which the propagation delay time period thereof is longer for comparing the receiving signal with the comparison value, recognizing a time point at which the receiving signal is equal to or larger than the comparison value when the receiving signal is compared with the comparison value as a receive detecting time point and measuring the propagation delay time period from a time point at which the irradiating means irradiates the electromagnetic wave to the receiv

Abstract: A distance measuring equipment which can detect a beam sending direction with a compact and simple structure is provided.The distance measuring equipment is equipped with a scanning means which swings a reflection means in a predetermined range to scan a beam, an original point detecting means which detects the original point as a reference position of the reflecting means, and a beam sending direction operating means which calculates a direction of the sending beam reflected by the reflecting means based on a detected output from the original point detecting means.

Abstract: In a distance measuring apparatus, a large number of distance data within a certain calculation angle region are acquired so as to obtain distance data with high reliability.

Abstract: A coating composition containing 100 parts by weight of a resin composition consisting of 30 to 90 parts by weight of (A) a hydroxyl group-containing polyester resin and 10 to 70 parts by weight of (B) a melamine resin curing agent selected from the group consisting of a mixture of methyl etherified melamine resin with butyl etherified melamine resin and a melamine resin having three or more on an average of methyl etherified methylol group per one of triazine nucleus and having a number average molecular weight of 1,000 or less; 0.2 to 3.0 parts by weight, calculated in terms of an amount of a sulfonic acid compound, of (C) a curing catalyst consisting of a neutralized product between the sulfonic acid compound and an amine; and 1 to 20 parts by weight of (D) a silicone compound mainly consisting of polydimethylsiloxane chain and having at least one selected from hydroxyl group, carboxyl group, epoxy group and mercapto group as a functional group.

Abstract: A coating composition containing a resin composition consisting of (A) 10 to 90 parts by weight of at least one resin selected from polyester resin having a glass transition temperature of -5.degree. C. to 80.degree. C. and a number average molecular weight of 5,000 to 30,000, and epoxy-modified polyester resin having a glass transition temperature of 10.degree. C. to 130.degree.0 C. and a number average molecular weight of 6,000 to 30,000; (B) 5 to 70 parts by weight of novolac-based epoxy resin and (C) 5 to 40 parts by weight of a curing agent per 100 parts by weight of the resin composition respectively; and (D) 20 to 120 parts by weight of an anticorrosion pigment per 100 parts by weight of the resin composition.

Abstract: Disclosed is a method of producing dimethylpolysiloxanes through hydrolysis of dimethyldichlorosilane wherein a water solution containing a water-soluble oxygen-containing organic compound is introduced into dimethyldichlorosilane. Therein, linear dimethylpolysiloxanes alone having both ends blocked with chlorine atoms can be selectively produced by properly controlling the water content in the hydrolysis system and further by rendering the hydrolysis system acidic, and cyclic dimethylpolysiloxanes alone can also be selectively produced by properly controlling the water content in the hydrolysis system and optionally rendering the hydrolysis system acidic.