Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.

Abstract: The present invention relates to a polyether compound having a halogen atom content of 0.1000% by mass or less in terms of a polymer molecule thereof as measured by combustion ion chromatography and a weight average molecular weight (Mw) of 140,000 or more and 1,000,000 or less.

Abstract: [Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link plates 2 for a silent chain having pinholes 22 for inserting linking pins 3 are formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes 22, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.

Abstract: The purpose of the present invention is to provide a display device wherein offsetting of substrates with each other in a liquid crystal panel by force applied during curve formation can be suppressed and thereby display defects can be reduced, and a method for manufacturing the display device. Provided is a display device that is provided with a curved liquid crystal panel comprising a pair of glass substrates that are made to face each other with liquid crystals encapsulated therebetween, said display device being provided with a translucent sheet material that is disposed on one surface side, which is the inside of the curve, of the liquid crystal panel, is larger than the liquid crystal panel, and is curved along the liquid crystal panel.

Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.

Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.

Abstract: A cap includes a main body attached to an end part of a charging port for fuel gas. The main body includes an elastic deformable portion for locking the main body to the end part when the main body is attached to the end part. The cap further includes a cover covering at least part of the elastic deformable portion and surrounding the main body. The elastic deformable portion at least partially elastically deforms when the main body is attached to the end part and when the main body is detached from the end part. The cover is a separate member from the main body. When the elastic deformable portion elastically deforms, the cover applies force to the elastic deformable portion in a direction opposite from the deforming direction.

Abstract: A vapor film-rupturing agent is provided that is prepared from asphalt as a staring material, so as to have a fraction (x) (% by mass) of a saturated component and a fraction (y) (% by mass) of an asphaltene component based on the total fraction 100% by mass of the saturated component, the asphaltene component, an aromatic component, and a resin component obtained by any one of analysis methods described in the Japan Petroleum Institute Standard and Manuals Testing Method for Petroleum Products JPI-5S-70-10 and the British Standard Test Method IP-469 that satisfy one or more of the following conditions (1) to (3): condition (1): 1.2926×(x)/100?8.113×(y)/100+2.3384?2.400, condition (2): (y) ?7.0, and condition (3): ((y)/(x)) ?0.5. The vapor film-rupturing agent is capable of preparing a thermal treatment oil composition having a high vapor film-rupturing effect with a characteristic number of seconds in the cooling capability test according to JIS K2242 (2012) of 2.50 seconds or less.

Abstract: A liquid crystal panel according to an embodiment of the present invention comprises: a liquid crystal layer containing liquid crystal molecules; a first alignment film in contact with a front surface of the liquid crystal layer; and a second alignment film in contact with a rear surface of the liquid crystal layer, the liquid crystal panel being curved in the shape of a cylindrical surface. The first alignment film includes a plurality of first strip portions extending along a first direction and causing the liquid crystal molecules to be aligned. The second alignment film includes a plurality of second strip portions extending along a second direction and causing the liquid crystal molecules to be aligned. The first direction is a peripheral direction of the cylindrical surface. The second direction is a direction which crosses the peripheral direction.

Abstract: Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl3) catalyst, and WC particles penetrate the surface of the pins together with chromium carbide (CrC). As a result, a chromium carbide layer in which WC particles are diffused in a CrC layer (CrC—WC layer) is formed on the outermost surface part of the steel forming the parent material of the pins.

Abstract: A fluid fitting of an embodiment mainly includes a socket part, a spherical valve inserted in the socket part, and a plug part configured to be inserted at a tip portion thereof into the spherical valve. Moreover, the plug part is fixed in the direction of turn by engaging an expanded-diameter portion of the plug part with a recess of the socket part. Thus, the plug part is prevented from being detached from the socket part while the fluid fitting is in use.

Abstract: A method of machining a metal plate, the method processing a net body made of a metal plate into a dome shape, the net body having a plurality of lattice-shaped through holes. An extension allowance portion is formed in a plurality of side portions so as to curve along a surface area direction, the side portions are formed in a process area of the net body being pressed at a time of drawing-machining, and the extension allowance portion is formed when forming the net body having the side portions constituting the through holes by processing the metal plate. The net body is processed into the dome shape by drawing-machining from one side to an other side.

Abstract: The invention provides a dialkyl ether represented by the following formula (1): (wherein each of R1 and R2 represents a C1 to C20 alkyl group, and n is an integer of 1 to 20), and a lubricating base oil and a lubricating oil composition containing the dialkyl ether. The lubricating base oil and the lubricating oil composition exhibit low viscosity, excellent viscosity-temperature characteristics, and high fluidity at low temperature.

Abstract: [Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link plates 2 for a silent chain having pinholes 22 for inserting linking pins 3 are formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes 22, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.

Abstract: A cap includes a main body attached to an end part of a charging port of fuel gas, an elastic deformable portion provided to the main body and for locking the main body to the end part when the main body is attached to the end part, and a cover covering at least part of the elastic deformable portion and surrounding the main body. The elastic deformable portion at least partially elastically deforms when the main body is attached to the end part and when the main body is detached from the end part. The cover is a separate member from the main body. When the elastic deformable portion elastically deforms, the cover applies force to the elastic deformable portion in a direction opposite from the deforming direction.

Abstract: In a reaction in which a boron trifluoride complex is used as a catalyst, the expensive and harmful boron trifluoride complex is separated from a reaction mixture containing the boron trifluoride complex by separating the boron trifluoride complex present in the reaction mixture by using a saturated hydrocarbon-based solvent.

Abstract: Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl3) catalyst, and WC particles penetrate the surface of the pins together with chromium carbide (CrC). As a result, a chromium carbide layer in which WC particles are diffused in a CrC layer (CrC—WC layer) is formed on the outermost surface part of the steel forming the parent material of the pins.

Abstract: A fluid fitting of an embodiment mainly includes a socket part, a spherical valve inserted in the socket part, and a plug part configured to be inserted at a tip portion thereof into the spherical valve. Moreover, the plug part is fixed in the direction of turn by engaging an expanded-diameter portion of the plug part with a recess of the socket part. Thus, the plug part is prevented from being detached from the socket part while the fluid fitting is in use.

Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.

Abstract: A method of machining a metal plate, the method processing a net body made of a metal plate into a dome shape, the net body having a plurality of lattice-shaped through holes. An extension allowance portion is formed in a plurality of side portions so as to curve along a surface area direction, the side portions are formed in a process area of the net body being pressed at a time of drawing-machining, and the extension allowance portion is formed when forming the net body having the side portions constituting the through holes by processing the metal plate. The net body is processed into the dome shape by drawing-machining from one side to an other side.