Abstract: A choke-coil fixture for miniature motors of a type having choke coils housed in recesses formed in an end bell closing an end of a motor housing, characterized in that choke-coil housing recesses are formed in such a manner as to lock ends of the choke coils when the choke coils are inserted into the recesses in the longitudinal direction, terminals having flat portions for pushing the other ends of the choke coils at portions electrically connecting the lead ends of the choke coils, and engaging portions for locking to the end bell is disclosed. The terminals for miniature motors can have positioning portions for positioning the terminals with respect to the lead ends of the choke coils, and cylindrical portions for engaging with the connecting power-feeding connecting pins; the cylindrical portion adapted to be flexible in size by being plastically deformed.

Abstract: Disclosed herein is a process for the preparation of a thiazolecarboxylic acid chloride represented by the following general formula (II): ##STR1## wherein R.sub.1 represents a hydrogen or halogen atom, a lower alkyl group, a lower alkoxy group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, and R.sub.2 represents a hydrogen atom, a lower alkyl group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, which comprises reacting a thiazolecarboxylic acid represented by the following general formula (I): ##STR2## wherein R.sub.1 and R.sub.2 have the same meanings as defined with respect to formula (II), with phosgene or trichloromethyl chloroformate in the presence or absence of a catalyst.

Abstract: An injection-compression mold having a stationary part and a movable part which are used for injection-molding a molten thermoplastic resin, at least one spring member with one end fixed to at least one of the mold parts and the other arranged so that it can abut against the opposite mold part when the mold is clamped in order that the bias force of the spring member to absorb the clamp force of a molding machine.

Abstract: Disclosed is an information storage medium having an air-sandwich structure which comprises two disc-shaped substrates joined together through a ring-shaped inner spacer and a ring-shaped outer spacer. These spacers are made of the same kind of resin as those forming the disc substrates and the resin of the spacers has a viscosity-average molecular weight larger than that of the resin of the substrates. Also disclosed is a process for producing the information storage medium by joining the spacers to the disc substrates by means of ultrasonic welding.

Abstract: A gas accumulation space, in which a predetermined amount of a gas is to accumulate and which communicates with said gas passageway, is located in a mold. After a cavity of the mold has been filled with a synthetic resin but before the mold is opened, the gas is fed into the gas passageway and the gas accumulation space until the pressure of the gas in the gas passageway and the gas accumulation space reaches a predetermined value. After the pressure of the gas in the gas passageway and the gas accumulation space has reached the predetermined value, the gas passageway is closed at a position upstream from where the gas passageway communicates with the gas accumulation space.

Abstract: This invention relates to a microwave plasma processing method and apparatus.An electromagnetic field intensity distribution of a microwave, which is incident into a plasma generation chamber and is again incident due to irregular reflection, is made uniform by uniforming means fixed inside a waveguide, a processing gas is converted to plasma by use of the microwave having the uniformed electromagnetic field intensity distribution, and a sample is plasma-processed by the resulting plasma. Accordingly, the electro-magnetic field of the microwave, which is incident, and is again incident, into the plasma generation region and locally increases a plasma density, is absorbed, attenuated or diffused by the uniforming means so that the distribution of the plasma density is made uniform and uniform processing can be effected.

Abstract: An improved injection molding process for producing a substrate of an optical disc having a high quality is disclosed. The process includes the steps of: fixing a stamper having protrusions corresponding to pits for recorded information or a groove for tracking onto one mold unit of a pair of mold units of an injection molding machine; combining the mold units to form a closed cavity between the pair of mold units; charging a molten molding resin into the cavity; cooling the resin in the cavity to form a molded substrate; separating one mold unit from another mold unit; and releasing the molded substrate simultaneously from both mold units when the two mold units are separated from each other by applying pressurized air onto both sides of the substrate.

Abstract: In a container for a photographic film cartridge having a body and a cap made of a high-pressure branched low-density polyethylene resin and fitted to said body, the improvement comprising that said polyethylene resin has a melt index of 7 to 40 g/10 minutes and a density of 0.918 to 0.930 g/cm.sup.3 and contains 0.05 to 1 wt. % of a fatty acid amide lubricant and that the bending rigidity of said cap is 1200 to 4000 kg/cm.sup.2.This resin for the cap is superior in fluidity, and molding troubles and coloring troubles at molding remarkably decrease. The molding cycle is also shortened. This cap is superior in fitness to the container body, and moisture sealing is improved.

Abstract: A semiconductor apparatus which includes a semiconductor substrate with semi-insulating properties and with a first region of a first conductivity type which will become the emitter region and a second region of the same first conductivity type which will become a collector region with the first and second regions formed in the semi-insulating semiconductor substrate and spaced apart from each other and a third region of a second conductivity type formed in the semi-insulating conductor substrate between the first and second regions and with forward biasing voltage applied between the third and first regions so as to form an imaginary base region in the semi-insulating semiconductor substrate beneath the third region due to implanted majority carriers from the third region so that the semiconductor apparatus operates as a bipolar transistor and wherein at least the first and/or the third regions consist of a plurality of regions.

Abstract: A complex of an electron-attracting group-substituted .eta..sup.5 -cyclopentadienylcobalt with a polyene or an acetylene for use as a catalyst, for example, for the synthesis of a substituted pyridine from an alkyne and a nitrile.

Abstract: In a floppy disc drive unit, the rotational speed of a floppy, a write current fed to a write head, electric characteristic of a signal processing circuit in a read circuit are all controlled so as to set them to values suitable for selected mode corresponding to magnetic recording data density. A switching signal is either manually produced or fed from an external circuit so as to effect switching between normal density mode and high density mode. The floppy disc drive unit according to the present invention is therefore capable of handling floppy discs of different density values.

Abstract: Chloroprene is produced by reacting 3,4-dichlorobutene-1 in an aqueous solution of an alkali metal hydroxide in the presence of at least one of furfuryl alcohol and tetrahydrofurfuryl alcohol preferably at 20.degree. to 70.degree. C.

Abstract: Chloroprene is produced by a dehydrochlorination of 3,4-dichlorobutene-1 by contacting 3,4-dichlorobutene with a metal alkoxide of tetrahydrofurfuryl alcohol. The reaction mixture in a form of a slurry obtained by the dehydrochlorination is distilled to separate lower boiling components comprising chloroprene and the unreacted 3,4-dichlorobutene-1 as main components from higher boiling components comprising tetrahydrofurfuryl alcohol and a metal chloride as main components.

Abstract: 3,4-Dichlorobutene-1 and 1,4-dichlorobutene-2 are isomerized in the presence of a catalyst of a combination of a copper compound or copper metal and at least one additive from the group of 1,3-diphenylguanidine, di-o-tolylguanidine, glycine ethyl ester hydrochloride and 2-amino-4-chlorophenol.

Abstract: Chromium-molybdenum structural steels which have high tensile strength, low susceptability to temper embrittlement, high hydrogen attack resistivity and high temperature ductility and which can be formed into very thick steel plates comprise 0.05 to 0.20% of C, 0 to 0.15% of Si, 0.46 to 1.00% of Mn, 2.00 to 3.50% of Cr, 0.80 to 1.20% of Mo, 0.00015 to 0.0015% of B, 0.005 to 0.070% of Sol. Al and inevitably entrained impurities, the balance to make up 100% of Fe. Preferably the inevitably entrained impurities of nitrogen and phosphorus are below 0.0060% of N and 0.0010% of P.

Abstract: Chromium-molybdenum steels which have high strengths, good hydrogen attack resistivities, good high-temperature ductilities and high creep rupture strength, and which, when formed into steel plates, welded and given a high-temperature strain relief annealing treatment will acquire high resistivity to creep damage, comprises 0.11 to 0.17% of C, 0.50 to 1.20% of Si, 0.46 to 1.00% of Mn, 1.00 to 1.50% of Cr, 0.45 to 0.65% of Mo, 0.00015 to 0.0015% of B, 0.010 to 0.100% of Sol. Al and inevitably entrained impurities, the balance to make up 100% of Fe. Preferably the inevitable nitrogen and phosphorus impurities are kept below 0.0060% of N and 0.010% of P.

Abstract: A heavy thick steel casting having high mechanical strength with a tensile strength of 80 kg/mm.sup.2 or more, excellent impact properties with a vE.sub.O value of more than 8 kg-m/cm.sup.2 and improved weldability, and also a method of manufacturing the same.In the method, steel containing boron as an essential component and with a Ceq value corresponding to the maximum thickness of the product is cast. The casting is solidified in air, then heated to a temperature of 930.degree. to 1,050.degree. C. for one hour or more, followed by air cooling. Thereafter, the casting is quenched and tempered to thereby impart the casting with the desired characteristics.

Abstract: An isomerization between 3,4-dichlorobutene-1 and 1,4-dichlorobutene-2 is carried out in the presence of a catalyst for isomerization as a combination of a copper compound and a dithiocarbamic acid derivative. The dithiocarbamic acid derivative is a compound having the formula ##STR1## wherein R and R' are the same and different and respectively represent a C.sub.1 -C.sub.8 alkyl group or an aryl group and M represents hydrogen atom or a metal atom or ammonium group and R" represents a C.sub.1 -C.sub.8 alkyl group, an aryl group or a heterocyclic group such as mercaptobenzothiazole.

Abstract: 3,4-Dichlorobutene-1 and 1,4-dichlorobutene-2 are isomerized in the presence of a catalyst of a combination of a copper compound or copper metal and at least one additive from the group of 1,3-diphenylguanidine, di-o-tolylguanidine, glycine ethyl ester hydrochloride and 2-amino-4-chlorophenol.

Abstract: A multiple-color, offset rotary press is disclosed wherein each plate cylinder carries two printing plates, with one of them wrapped around a larger diameter portion of the plate cylinder and the other around a tube slidably fitted over a smaller diameter portion of the cylinder. A shaft secured to the tube and extending coaxially from one end of the plate cylinder, and an axle extending coaxially from the other cylinder end, are mounted on frame means for independent rotary and axial motion. A pair of driven helical gears are mounted respectively on the shaft and the axle for simultaneous rotation therewith but for axial motion relative to same and are meshed respectively with a pair of driving helical gears fixedly mounted on the opposite axles of a corresponding blanket cylinder. The positions of the printing plates are separately adjusted in the circumferential direction by causing axial motion of the driven helical gears, and in the axial direction by causing axial motion of the shaft and the axle.