Abstract: To provide a drive device for a self-propelled elevator which is capable of moving a car in a vertical direction and a horizontal direction with a simple configuration. The drive device for a self-propelled elevator includes: a rotating body which is rotatably coupled to a back face of a cab; and wheels which are provided on the rotating body so as to sandwich guide surfaces of a rail on a back face side of the cab, which generate, by friction between the wheels and the rail, a force that moves the cab in a vertical direction when a longitudinal direction of the rail is the vertical direction, and which generate, by a friction force between the wheels and the rail, a force that moves the cab in a horizontal direction when the longitudinal direction of the rail is the horizontal direction.

Abstract: An optical fiber ribbon according to the present invention includes a collective coating layer containing an ultraviolet curable resin containing amorphous PPG and an amorphous monomer, the collective coating layer formed around coated optical fibers. The collective coating layer has an equilibrium elastic modulus of 12 MPa to 20 MPa, both inclusive, and a yield point elongation of 5% to 9%, both inclusive, and the adhesion between the collective coating layer and the outermost layers of the coated optical fibers is 12 N/cm to 15 N/cm, both inclusive.

Abstract: An optical fiber ribbon according to the present invention includes a collective coating layer containing an ultraviolet curable resin containing amorphous PPG and an amorphous monomer, the collective coating layer formed around coated optical fibers. The collective coating layer has an equilibrium elastic modulus of 12 MPa to 20 MPa, both inclusive, and a yield point elongation of 5% to 9%, both inclusive, and the adhesion between the collective coating layer and the outermost layers of the coated optical fibers is 12 N/cm to 15 N/cm, both inclusive.

Abstract: A method and a device are disclosed with which high-temperature combustion is attained using a fuel and an aqueous solution of an organic compound, e.g., an aqueous alcohol solution. In a combustion chamber, a fuel is sprayed and burned with a first burner to elevate the interior temperature of the combustion chamber (and/or a heat-resistant reflector disposed inside the combustion chamber) to a high temperature of 700° C. or above, and an aqueous solution of an organic compound (e.g., an alcohol-water mixture) is subsequently sprayed with a second burner into the high-temperature combustion gas obtained with the first burner, thereby causing microexplosion of water vaper and further elevating the interior temperature. As such, the fuels and organic compounds (e.g., Alcoholic aqueous solution) are fully burned, and thus the fuel cost can be reduced. Thus, high-temperature superheated steam containing a large amount of water vapor is yielded.

Abstract: Foaming polypropylene resin compositions are excellent in balance between melt tension and flowability, can give injection-molded foams having superior mechanical strength such as impact resistance, and are suited for the production of automobile parts or the like. Processes of the invention produce injection-molded foams from the compositions. A foaming polypropylene resin composition according to the present invention includes a polypropylene resin (A) and an ethylene/?-olefin having 3-10 carbon atoms copolymer (B) in a specific ratio; the ethylene/?-olefin having 3-10-carbon atoms copolymer (B) includes a higher molecular weight component (B-H) having MFR190 of 1 to 10 g/10 min and a lower molecular weight component (B-L) having MFR190 of 20 to 50 g/10 min; and the weight ratio between (B-H) and (B-L), (B-H):(B-L), is in the range of 6:4 to 2:8.

Abstract: An injection-molding die including: a fixed die; a movable die; a cavity defined by the fixed die and the movable die; and a gate for injecting a melt resin into the cavity. The cavity includes: a flow-dividing structure that divides a flow of the melt resin injected into the cavity into a plurality of resin flows; and a flow-advancing area in which the resin flows generated by the flow-dividing structure are merged together. The flow-advancing area is formed thicker than a flow-hesitating area of the flow-advancing area in the cavity.

Abstract: An object of the invention is to provide foaming polypropylene resin compositions that are suited for injection foam molding, have excellent balance between flowability and melt tension, are foamable at high expansion ratio, and can give lightweight molded foams having excellent appearance and mechanical strength. Another object is to provide injection-molded foams using the compositions. A foaming polypropylene resin composition of the invention includes: 50 to 90 parts by weight of a high-molecular weight component-containing impact polypropylene (AB); 10 to 30 parts by weight of a rubber component (C); and 0 to 20 parts by weight of an inorganic filler (D) (wherein the total of (AB), (C) and (D) is 100 parts by weight); and the high-molecular weight component-containing impact polypropylene (AB) contains 4.5 to 31.

Abstract: A storage container according to an aspect of the invention is provided with a tube-shaped storing portion formed of a resin having an extraction opening enabling a stored substance to be sucked in a center area on one end side, and a circular opening on the other end side, and a bag-shaped storing portion which is welded along the circular opening of the tube-shaped storing portion, enters inside the tube-shaped storing portion to be able to come into intimate contact with an inner surface of the tube-shaped storing portion in sucking through the extraction opening, and is formed of a thin film in the shape of a bag to be a non-independent body, where the tube-shaped storing portion changes in cross-sectional shape from a circular shape to an elliptical shape toward one end side from the other end side.

Abstract: An injection-molding die including: a fixed die; a movable die; a cavity defined by the fixed die and the movable die; and a gate for injecting a melt resin into the cavity. The cavity includes: a flow-dividing structure that divides a flow of the melt resin injected into the cavity into a plurality of resin flows; and a flow-advancing area in which the resin flows generated by the flow-dividing structure are merged together. The flow-advancing area is formed thicker than a flow-hesitating area of the flow-advancing area in the cavity.

Abstract: A buffered optical fiber having an excellent pistoning characteristic compared with a conventional one and a manufacturing method thereof are provided. The buffered optical fiber of the present invention is composed of an optical fiber with a primary coating layer and a secondary coating layer provided on a circumference of a glass optical fiber and a tertiary coating layer having thermoplastic polyester elastomer as the main ingredient provided on a circumference of the optical fiber and is characterized in that an outer diameter of the primary coating layer is 180 to 200 ?m, an outer diameter of the secondary coating layer is 350 to 450 ?m and the product of a thickness of the secondary coating layer of the optical fiber and a force of pulling out the glass optical fiber from the optical fiber is 720 N/mm·?m or more.

Abstract: A buffered optical fiber having an excellent pistoning characteristic compared with a conventional one and a manufacturing method thereof are provided. The buffered optical fiber of the present invention is composed of an optical fiber with a primary coating layer and a secondary coating layer provided on a circumference of a glass optical fiber and a tertiary coating layer having thermoplastic polyester elastomer as the main ingredient provided on a circumference of the optical fiber and is characterized in that an outer diameter of the primary coating layer is 180 to 200 ?m, an outer diameter of the secondary coating layer is 350 to 450 ?m and the product of a thickness of the secondary coating layer of the optical fiber and a force of pulling out the glass optical fiber from the optical fiber is 720 N/mm·?m or more.

Abstract: There are herein disclosed a novel metallocene compound represented by the formula [1] and a process for preparing a polyolefin comprising the step of polymerizing an olefin in a catalytic system including the metallocene compound.

Abstract: There are herein disclosed a novel metallocene compound represented by the formula [1] and a process for preparing a polyolefin comprising the step of polymerizing an olefin in a catalytic system including the metallocene compound. The metallocene compound of the present invention particularly permits the preparation of a polyolefin having a high stereoregularity and a low molecular weight, and it is industrially extremely valuable: wherein R1 and R2 are each selected from the group consisting of an alkyl group, an aryl group and a silicon-containing alkyl group; M is a metal selected from the group IV of the periodic table; Q is carbon or silicon; X is a halogen, an alkyl group or an anionic ligand, and they may be selected so as to be the same or a combination of different ones; i is an integer of 1 to 10; n is an integer of 1 to 4; m is an integer of 0 to 4; and h is an integer of 1 to 3.

Abstract: An olefin polymerization catalyst system comprising an organic transition metal compound and a support, wherein an organic transition metal compound is soluble in an inert organic solvent and a support which is insoluble in the inert organic solvent, and the support comprises an organic high molecular weight compound which contains a specific carbonyl-containing group. The catalyst system can polymerize an olefin in a high activity, provides polymer with high stereoregularity, prevents adhesion or fouling of the polymer generated in the course of polymerization or an organic aluminum oxy compound on the inner wall of the reactor, leads to high bulk density of the polymer and very reduced level of fisheye and/or gel generation on the processed item, can maintain high productivity, can manufacture high quality product, and thus provides extremely high contribution in industry.

Abstract: A packaged roll-shaped silver halide photosensitive material comprising a winding core, a roll-shaped silver halide photosensitive material wound on the winding core and a packaging material covering the periphery and the both two lateral sides of the roll-shaped silver halide photosensitive material, wherein at least one surface of the three surfaces in the periphery and the both two lateral sides of the roll-shaped silver halide photosensitive material is packaged with a packaging material comprising a combination of a paper material with a pored film, and the water vapor permeability of such packaging material is not less than 5.1 g/m.sup.2 .multidot.24 hours. It is possible to prevent deterioration of a roll-shaped silver halide photosensitive material through abnormal sensitization of photographic performance.

Abstract: There is provided a sintered silicon carbide with graphite added thereto having excellent lubrication characteristics. The sintered silicon carbide with graphite added thereto contains 10-30 wt. % of natural graphite flakes having an average grain size of 8-100 .mu.m and the remainder silicon carbide and a sintering aid, and having a relative density of 80-92%.

Abstract: A method for ejecting a molded product from a die. The method includes advancing an ejector pin from a withdrawn position to a projected position for ejecting a molded product and withdrawing the ejector pin from the projected position to the withdrawn position. At a preset range in at least one of the advancing step and the withdrawing step, the ejector pin undergoes very small reciprocating movements having a period less than 0.1 seconds. When the ejector pin is advanced while very small reciprocation is performed over a preset range in the advancing step, energy due to the projection of the ejector pin is continuously and gradually dissipated. When the ejector pin is withdrawn while very small reciprocation is performed over a preset range in the withdrawing step, the molded product is easily separated from the ejector pin. Accordingly, scattering of molded products and generation of cracks in the molded products can be prevented.

Abstract: The invention provides a polymeric insulating material having a high dielectric breakdown voltage. The material comprises polypropylene which has been obtained in a yield of at least 300,000 g/g-Ti based on titanium in a catalyst upon polymerization, contains ash in an amount not greater than 40 ppm by weight when analyzed by completely burning the polypropylene in air, said ash containing titanium in an amount not greater than 1 ppm by weight based on the weight of the polypropylene, and also contains chlorine in an amount not greater than 2 ppm by weight and boiling n-heptane soluble matter in an amount not smaller than 1 wt. % but not greater than 10 wt. %. To further improve the dielectric breakdown voltage an inorganic oxide or hydroxide free of particles of 10 .mu.m and greater in diameter and having an average particle size not greater than 1 .mu.

Abstract: The invention provides a polymeric insulating material having a high dielectric breakdown voltage. The material comprises polypropylene which has been obtained in a yield of at least 300,000 g/g-Ti based on titanium in a catalyst upon polymerization, contains ash in an amount not greater than 40 ppm by weight when analyzed by completely burning the polypropylene in air, said ash containing titanium in an amount not greater than 1 ppm by weight based on the weight of the polypropylene, and also contains chlorine in an amount not greater than 2 ppm by weight and boiling n-heptane soluble matter in an amount not smaller than 1 wt. % but not greater than 10 wt. %. According to the invention, it is possible to further improve the dielectric breakdown voltage by adding to the polypropylene an inorganic oxide or hydroxide free of particles of 10 .mu.m and greater in diameter and having an average particle size not greater than 1 .mu.

Abstract: An engine cover removably secured to the cylinder head of an internal combustion engine for housing suction and exhaust valves and a valve operating mechanism is provided with an arm which is pivotally connected to a stationary support located close to one side of the engine so that the cover can be rotated or shifted in the lateral direction.