Abstract: According to this invention, there is provided a process for preparing a low-crystalline soft or semi-hard copolymer, characterized in that 90 to 98 mole % of propylene, 0.2 to 9 mole % of ethylene and 0.2 to 9 mole % of a straight-chained (.alpha.-olefin having not less than four carbon atoms are copolymerized using a catalyst, said catalyst comprising (1) a solid substance containing magnesium and titanium, (2) an organometallic compound and (3) an electron donor.

Abstract: A device for locking the webbing for the seat belt of an automotive vehicle is provided with a webbing reel biased in a direction to wind the webbing, a drum on which the webbing is partially wound, a drum base supporting the drum and having an axis of rotation eccentric from the axis of rotation of the drum, and a base supporting the reel and drum base. A fixed plate is provided on the base with a sufficient distance with respect to the drum to permit the webbing to pass therethrough, and a sensing device sensing a sudden shock or acceleration or deceleration of the vehicle is also provided. Means are provided for preventing rotation of the reel and the drum when a sudden shock or acceleration or deceleration has been imparted to the vehicle, and means for rotating the drum base at its eccentric axis of rotation to press the drum into contact with the fixed plate and intensely tighten the webbing therebetween is provided to thereby impede the draw-out of the webbing by the tightening thereof.

Abstract: Polyurethane foams which may be rendered flame resistant by the addition of flame retardants are produced by reaction between a carbohydrate, a polyisocyanate and water in the presence of a suitable surfactant and polyurethane forming catalyst.

Abstract: Chloroalkylthiolcarbamate compounds of the formula: ##STR1## wherein Z represents ##STR2## and when Z is ##STR3## n is an integer of 4 to 10, whereas when Z is ##STR4## n is an integer of 3 to 10. These compounds are useful as effective herbicides having no harmful effect on the ecosystem, particularly extremely low toxicity to fish, and can be obtained, for example, by reacting the corresponding thiolcarbamate derivatives with a chloroalkyl halide.

Abstract: In a retractor wherein webbing is drawn out from a take-up spool and extends partially around a drum, a locking device for the webbing for the seat belt is provided with a sensor for sensing sudden acceleration or deceleration exerted on a vehicle body. A first restraining pawl is moved by the sensor to a position preventing rotation of the spool. A second restraining pawl is driven by a tilting member to prevent rotation of the drum, and a frictional restraining member for pressing the webbing is provided on the base of the drum in a position opposed to a fixed frictional restraining member provided on the base of the retainer.

Abstract: A tilt steering device has an upper bracket and a lower bracket. The upper bracket has downwardly extending side plates on the opposite sides thereof and overlapping portions of upwardly extending side plates on the lower bracket. An angle limiting device couples the upper bracket tiltably with the lower bracket, and a first spring urges the upper bracket toward an upper-most position. A rod is supported for rotation and axial movement by the side plates of one of the brackets. A connecting arm is fixed to the rod and extends adjacent to one of the side plates of the other bracket. An operating lever is connected to the rod so as to be capable of imparting to the rod rotation and axial movement resisting biasing force of a second spring which urges the connecting arm axially of the rod toward the one side plates. A selecting device is provided on said one bracket.

Abstract: A magnetic recording medium including a substrate having a magnetic coating layer thereon, said magnetic coating layer comprising ferromagnetic particles dispersed in a binder vehicle, characterized in that the magnetic coating layer contains one or more ketones selected from the compounds expressed by the general formula ##STR1## wherein R.sub.1 and R.sub.2 represent saturated or unsaturated chain aliphatic radicals, both or either of which have 11 to 22 carbon atoms and may contain hydroxyl, carboxyl or amino groups.

Abstract: A magnetic tape cassette including an intermediate frame which has flat upper and under surfaces in parallel and provides a sufficient space therein to hold a length of magnetic tape, and substantially flat top and bottom plates fastened, respectively, to the flat upper and under surfaces of the intermediate frame, characterized in that said intermediate frame is made of a composite resin material which comprises an unsaturated polyester resin and a thermoplastic polymer containing from 50 to 75% by weight of calcium carbonate and glass fiber on the basis of the total resin weight, the intermediate frame having a linear expansion coefficient in the range from 1.times.10.sup.-5 to 3.times.10.sup.-5 /.degree.C., said calcium carbonate and said glass fiber being used in a ratio by weight of from 60:10 to 40:30.

Abstract: Novel hemostatic agent comprises equine arterial fibrillar collagen in a carrier. The agent is useful for the aggregation of platelets for clinical diagnostic tests and for the clotting of blood, such as for controlling bleeding in warm blooded species. The fibrillar collagen is obtained by extracting homogenized equine arterial tissue with aqueous solutions followed by extensive dialysis.

Abstract: In a pupil divisional type focusing position detection apparatus of the type capable of detecting the infocus state of a taking lens based on a phase difference of output signals produced from at least one photosensor array for receiving rays of image formation light from the exit pupil of the taking lens, the focusing position detection accuracy can be changed as desired or in accordance with F-number of the taking lens.

Abstract: A moving table assembly has a base, a table supported by the base for movement in one direction, a feed screw having its axis parallel to the direction of movement of the table, a nut threadably engaged with the feed screw, and a connecting mechanism for connecting the table and the nut, the connecting mechanism comprising a first connecting portion for transmitting the axial displacement of the nut to the table and a second connecting portion for preventing the nut from rotating relative to the axis of the feed screw, the first connecting portion being provided with a guide member having a pair of guide surfaces provided on one of the table and the nut in orthogonal relationship with the axis of the feed screw, two support shafts corresponding to the guide surfaces respectively and secured to the other of the table and the nut, and two arms rockably provided on the support shafts respectively and having at the opposite ends thereof rotatable rollers engaging the guide surfaces, the rollers being pressed agai

Abstract: This invention provides a process for preparing polyolefins by polymerizing or copolymerizing olefins using as the catalyst a titanium compound-containing solid component and an organometal compound, said solid component comprising a substance obtained by copulverizing (1) magnesium halide and/or manganese halide, (2) an organic halide compound, (3) a chain or cyclic silicone compound with a recurring structural unit represented by the general formula ##STR1## wherein R' and R" respectively represent a hydrogen, alkyl, aryl, alkoxy or hydroxyl group and (4) tetravalent and/or trivalent titanium compound(s).

Abstract: Method and kit for measuring lipid peroxides is provided, in which the measuring reagent contains peroxidase and a hydrogen donor. The method can be used to determine the amount of lipid peroxides in foods or body fluids.

Abstract: The invention provides a novel electric power source unit such as a high-speed pulse power source unit built with a pulse-forming circuit and a DC electric power source unit built with a high-frequency voltage-multipler rectifying circuit having high performance in comparison with conventional units. The inventive unit comprises, as a part of the circuit, at least one ceramic capacitor composed of a ceramic dielectric body made of a strontium titanate-based composition unlike the conventional ones in the prior art comprising barium titanate-based ceramic capacitors. Four classes of the preferred compositions are disclosed each containing strontium titanate as the principal component.

Abstract: A track guide linear motion bearing device comprises an outer sleeve, a square elongated guide bar, a retainer, a number of balls, and end caps. The outer sleeve has three no-load ball guide grooves formed in the axial inner surface thereof having a substantially C-shaped cross-section and two ball rolling grooves formed between the no-load ball guide grooves. The grooves extend over the entire axial length of the outer sleeve. The guide bar is provided, in both upper corner portions thereof, with axially extending ball guide grooves corresponding to the ball rolling grooves of the outer sleeve. The retainer is loosely fitted between the guide bar and the outer sleeve and is formed in the outer surface thereof with a plurality of outwardly opening endless track grooves each comprising a load side groove, a no-load side groove and a U-turn groove.

Abstract: A slit-exposure type illumination apparatus capable of scanning a stationary original document by swinging an exposure lamp at a predetermined position and having side reflectors on the opposite sides of each linear light source and a pair of auxiliary plane reflectors which are disposed in the scanning direction of the illumination apparatus.

Abstract: A magnetic recording medium is provided which satisfies electromagnetic conversion characteristics and typical physical properties such as bonding strength, repeated-passage stability, still-playback characteristics, etc. without unfavorably affecting the surface smoothness. The binder in the magnetic coating contains in combination specific proportions of three components, a polyurethane resin, an epoxy resin, and a nitrocellulose whose protective ingredient has been replaced by a vinyl chloride-vinyl acetate copolymer is used as a resin binder in magnetic coating material together with a polyisocyanate curing agent.

Abstract: L-amino acid oxidase is obtained by culturing a microorganism which can produce L-amino acid oxidase and belongs to the genus Colletotrichum, e.g. Colletotrichum sp. M5073, deposition number FERMP 5441, in a culturing medium and recovering the oxidase from cells of the microorganism.

Abstract: 1,5-Dimethyl-6,7-dioxabicyclo[3.2.1]-octane and 1,5-dimethyl-6,7-diazabicyclo[3.2.1]-oct-6-ene are synthesized. They are analogs of the western and southern pine beetle natural-pheromone, frontalin. They are useful for controlling the multiplication of these harmful insects and for limiting infestation of wooded areas by them.

Abstract: A developing system is provided for a copying process such as an electrophotographic copying process in which a developer is supplied to the surface of a member which is formed with an electrostatic latent image to provide developing thereof. An electrode is disposed opposite the surface of the member with the developer interposed therebetween, and the induction potential of the electrode is maintained below a given value by means of a constant voltage element. The potential of the electrode is induced by either the image portion of the member's surface having the electrostatic latent image or by an unexposed, separate charged portion thereof.