Abstract: In a wet friction material, a plurality of segment pieces is disposed at both sides of inter-segment grooves. The segment pieces are composed of first segment pieces and second segment pieces. The first segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the first segment piece has a short dimension. The second segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the second segment piece has a long dimension.

Abstract: A wide slit nozzle having a slit as a discharge opening. The thickness of a lateral end part is set smaller than the thickness at a lateral center part. The thickness of the lateral center part is fixed. The thickness of the lateral end part changes linearly from opposite lateral ends of the lateral center part to the opposite lateral ends of the slit. Coating material is discharged from the slit while applied with pressure, so that the coating material is coated while expanded wider than the width of the slit. The coating material is discharged at 7 liter per minute, and a coating width of a first example is 100 mm, for example. A thickness increase of the overlapped part is +25% even when a width or an overlapped margin z of the overlapped part is 10 mm or 20 mm.

Abstract: A coating nozzle for high-viscosity paint includes a nozzle slit. The nozzle slit exhibits a specific reduced slit angle, and includes a nozzle-slit outlet, and a nozzle-slit inlet. The nozzle-slit outlet is formed as a distinct substantially-arced shape elongating lopsidedly from the nozzle-slit inlet to the nozzle-slit outlet. The coating nozzle including the nozzle slit can optimize a shear velocity of high-viscosity paint for a discharge rate of the high-viscosity paint in a setting of the actual employment.

Abstract: To absorb a noise produced by an external force that generates an audio frequency even if it is applied thereto, and to make it hard to become a noise source to a surrounding area. It includes a surface layer 20 having microscopic pores 21 formed on a surface 20A, communicating passages 24 communicating with the microscopic pores 21 and a porous layer 10 having sound pores 14 that are formed at an inner part deeper than the surface layer 20 having the microscopic pores 21 formed, communicate with the communicating passage 24 and that have a volume larger than volumes of the microscopic pore 21 formed on the surface 20A and the communicating passage 24. A sound absorption characteristic and/or a sound insulation characteristic is provided by the microscopic pores 21 of the surface 20A, the communicating passages 24 of the porous layer 10, and the sound pores 14 of the porous layer 10.

Abstract: A wet friction member contains a pulverized cork heated to 150-200° C. if necessary. The pulverized cork is mixed with other papermaking materials and formed into a paper-made substrate. The paper-made substrate is impregnated with a synthetic resin to be a binder and heated and cured. The cork itself has a high friction coefficient ?. Moreover, a powder thereof increases surface area and area in contact with a separator plate of a counter member, thereby improving a friction coefficient of a friction surface of the wet friction member. The friction coefficient of the cork itself and capacities for absorbing and discharging oil are improved by heating the cork. Thus, there is provided a wet friction member that has a higher friction coefficient ?. An increase in the friction coefficient ?, weight reduction by reducing the number of friction members, and high efficiency are achieved when used as a wet friction member.

Abstract: A segment-type friction material is composed of segment pieces. An outer circumference of the segment piece is away from an outer circumference of a core plate. A setback amount is about 2 mm. Then, a gap between the outer circumference of the segment piece and an inner peripheral part of an automatic transmission case becomes large. Thus, there is generated a part at which a gap between the segment pieces and a separator plate becomes large in a disengaged state.

Abstract: A sealing compound composition as an adhesive composition contains a vinyl chloride resin, a plasticizer, a filler, a moisture absorbent and an acrylic resin as a pH control material. The moisture absorbent is blended within a range of 0.3 to 2.0% by weight. The acrylic resin is blended within a range of 1.0% by weight or more to less than 7.0% by weight. A blending ratio of the moisture absorbent is half or less than that of the acrylic resin.

Abstract: In a dry friction material and a method for manufacturing the same, to maintain a content of glass fibers low on a whole dry friction material to apply a hole boring for caulking assembly with high strength and high stiffness at a part to be subjected to the hole boring. A part (glass-rich part 30) to be subjected to the hole boring is pressed at a higher pressure than a part not to be subjected to the hole boring in a press-shaping step by providing a rib 21 protruding toward a shaped body side on a part of press dies 20A, 20B corresponding to the part to be subjected to the hole boring. Thereby, only a compounded rubber 4 is pushed outward and only the glass-rich part 30 has an increase in a content of glass fibers 3. Thereby, strength that can withstand the hole boring is obtained. Accordingly, a dry friction material 1 with a bored hole 2 bored without generating a failure in the hole boring can be manufactured.

Abstract: To be able to promote discharge of lubricating oil in a disengaged state while maintaining a large lining area to such an extent that it does not affect torque transmission capacity, heat resistance, and peeling resistance thereby to obtain an excellent effect to reduce a drag torque in a wide range of relative rotation speeds. In a segment friction material 1A as a wet friction material, drag torque reducing grooves 5A are provided only on top surfaces of part of segment pieces 3A among thirty pieces of segment pieces 3, 3A. A series of drag torque reducing grooves 5A extend over five segment pieces 3A along a direction almost at right angles to a straight line connecting a center point 5Aa thereof and a center O of a circumference. The series of drag torque reducing grooves 5A are provided at three places on the circumference. Thereby, discharge of ATF is promoted without reducing a lining area and an oil film is formed on the top surface of the segment piece 3A.

Abstract: To absorb a noise produced by an external force that generates an audio frequency even if it is applied thereto, and to make it hard to become a noise source to a surrounding area. It includes a surface layer 20 having microscopic pores 21 formed on a surface 20A, communicating passages 24 communicating with the microscopic pores 21 and a porous layer 10 having sound pores 14 that are formed at an inner part deeper than the surface layer 20 having the microscopic pores 21 formed, communicate with the communicating passage 24 and that have a volume larger than volumes of the microscopic pore 21 formed on the surface 20A and the communicating passage 24. A sound absorption characteristic and/or a sound insulation characteristic is provided by the microscopic pores 21 of the surface 20A, the communicating passages 24 of the porous layer 10, and the sound pores 14 of the porous layer 10.

Abstract: A coating nozzle for a high-viscosity paint is equipped with an introduction passage, an inner space, and a nozzle slit, which communicate with one another, and sprays a coating body with the high-viscosity paint from the nozzle slit in a radial direction. The nozzle slit is constructed in a sectional shape having a predetermined angle in a plan view. When the nozzle slit is regarded as having the sectional shape, an arc of the sectional shaped nozzle slit serves as a nozzle slit outlet. The nozzle slit outlet has a nozzle slit outlet width equal to or larger than 35 mm and a flattening equal to or smaller than 0.01 where a slit height represents a clearance of the nozzle slit outlet, the nozzle slit outlet width represents a chord of the arc, and the flattening represents a ratio of the slit height to the nozzle slit outlet width.

Abstract: In a wet friction material, inorganic filler of small particle size is added to fill clearances or space between fibers with the inorganic filler. The inorganic filler is attached to the fibers with each other to reinforce strength of the wet friction material when an impregnated resin is hardened. Absolute specific gravity of the inorganic filler is set at a fixed value so as to make its compounding quantity small, thereby assuring a pore diameter of a friction material substrate without filling pores of the friction material substrate with the inorganic filler.

Abstract: A wet friction member contains a pulverized cork heated to 150-200° C. if necessary. The pulverized cork is mixed with other papermaking materials and formed into a paper-made substrate. The paper-made substrate is impregnated with a synthetic resin to be a binder and heated and cured. The cork itself has a high friction coefficient ?. Moreover, a powder thereof increases surface area and area in contact with a separator plate of a counter member, thereby improving a friction coefficient of a friction surface of the wet friction member. The friction coefficient of the cork itself and capacities for absorbing and discharging oil are improved by heating the cork. Thus, there is provided a wet friction member that has a higher friction coefficient ?. An increase in the friction coefficient ?, weight reduction by reducing the number of friction members, and high efficiency are achieved when used as a wet friction member.

Abstract: A segment-type friction material comprises segment pieces each having a supply passage formed thereon to supply lubricating oil to a surface of each of the segment pieces. The segment-type friction material further comprises oil grooves each having an outer peripheral opening portion extended in a curved shape or a linear shape. Thereby, lubricating oil is sufficiently supplied to the surface of each of the segment pieces from an outer peripheral side thereof or an inner peripheral side thereof and a clearance between the segment-type friction material and its associated separator plate is assured. Moreover, a space for the lubricating oil to flow through an outer periphery is sufficiently assured and a drag torque is reduced.

Abstract: Provided is a wet friction material that includes a ring shaped flat metal core and a plurality of segment-type friction material substrates joined onto one or both of surfaces of the ring shaped flat metal core with an adhesive and spaced apart along an entire circumference of the ring shaped flat metal core to form a plurality of oil grooves extending in a radial direction of the core metal by a clearance between adjacent ones of the above segment pieces. One or both of outer peripheral corner portions of each of the plurality of segment-type friction material substrates is chamfered to form a chamfered part such that a width of the oil grooves adjacent the chamfered part of the corner portions is larger than a width of a thinnest portion of the above plurality of the oil grooves.

Abstract: Three external tooth wet friction materials are each composed of an external tooth plate and a lining adhered to one surface thereof along an entire circumference. Three internal tooth wet friction materials are each composed of an internal tooth plate and a lining adhered to one surface thereof along an entire circumference. Then, the three external tooth wet friction materials and the three internal tooth wet friction materials are disposed side by side so as to constitute a multi-plate frictional engagement apparatus. A thickness of the internal tooth plate is made thinner in view of its good heat discharge capability, and the thickness of the external tooth plate is made thicker by that much.

Abstract: A friction material has a resin amount distribution that is the largest at a portion near a non-friction surface, that becomes lower toward an inside and that is the lowest at a portion near a friction surface. For example, such friction material is manufacture as follows. First, two friction materials are overlapped while the friction surfaces faced with each other. Then, the friction materials are dried at a room temperature. At this time, the resin has such a characteristic as to move while dragged by a solvent that dries from the non-friction surface located outside. Using such characteristic, the resin amount at the portion near the friction surface is lessened. Then, a temperature at the friction surface is made low and a temperature at the non-friction surface is made high in a drying step of the friction material. Thereby, the resin amount at the portion near the friction surface is lessened.

Abstract: In a wet-type friction material, a ring-shaped friction material substrate is compressed and fixed on a surface of a core metal by heat-pressing by a manufacturing metal mold. At the same time, a taper of an angle ? corresponding to a taper at an outer peripheral side of an upper mold is provided on an outer peripheral side of the ring-shaped friction material substrate. Thus, the taper is formed such that a thickness in a radial direction of the ring-shaped friction material substrate becomes smaller from a middle point toward an outer peripheral edge.

Abstract: A friction material has a resin amount distribution that is the largest at a portion near a non-friction surface, that becomes lower toward an inside and that is the lowest at a portion near a friction surface. For example, such friction material is manufacture as follows. First, two friction materials are overlapped while the friction surfaces faced with each other. Then, the friction materials are dried at a room temperature. At this time, the resin has such a characteristic as to move while dragged by a solvent that dries from the non-friction surface located outside. Using such characteristic, the resin amount at the portion near the friction surface is lessened. Then, a temperature at the friction surface is made low and a temperature at the non-friction surface is made high in a drying step of the friction material. Thereby, the resin amount at the portion near the friction surface is lessened.

Abstract: A water-based coated-type vibration damping material uses a styrene-butadiene copolymer emulsion as a resin emulsion and a calcium carbonate as an inorganic filler. The water-based coated-type vibration damping material limits a blending amount of a glycol to 2% by weight or less. In case of making a coated layer by such water-based coated-type vibration damping material, there is no blister generation observed after a hot water immersion of 168 hours (7 days), after a hot water immersion of 336 hours (14 days) and after a hot water immersion of 1000 hours, either.