Abstract: A deep groove ball bearing includes an outer ring, an inner ring, a plurality of balls, and a seal member. An axial cross-sectional width is smaller than a radial cross-sectional height, a thickness of the inner ring is greater than a thickness of the outer ring, and a pitch diameter of the ball is larger than a median diameter between an inner diameter of the inner ring and an outer diameter of the outer ring A radial dimension between an outer diameter of a shoulder portion of the inner ring and an inner diameter of the seal member is greater than the thickness of the outer ring. As a result, width and weight can be reduced, a load capacity can be secured, grease leakage can be prevented, and a service lifespan can be extended.

Abstract: According to one embodiment, a damaged region determination system of the embodiment includes a plurality of sensors, a position locator, and a determiner. The plurality of sensors detects elastic waves generated in a target object related to a railway which is a determination target of a damaged region. The position locator locates positions of sources of a plurality of elastic waves based on the plurality of elastic waves detected by each of the plurality of sensors. The determiner determines the damaged region in the target object based on the positions of the sources of the plurality of elastic waves.

Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, a corrector, and an evaluator. The plurality of sensors detect elastic waves generated from a structure. The position locator is configured to locate positions of sources of a plurality of elastic waves detected by the plurality of sensors on the basis of the plurality of elastic waves. The corrector is configured to correct information based on the position location in the position locator using a correction value which is determined according to a temperature of the structure. The evaluator is configured to evaluate a deterioration state of the structure on the basis of the corrected information.

Abstract: A holding mechanism prevents a device at a back side of a held object from being hidden by the object. Even if a large smartphone is held, clamping with a fixed clamping part and a movable clamping part prevents the fixed part from being moved, wherein a device located back of the smartphone and at the side of the fixed clamping part cannot be hidden by the smartphone. Due to the movable clamping part being movable farther from a rotation axis than the fixed clamping part, a middle portion of the smartphone in the clamping direction substantially coincides with the rotation axis when holding a smartphone with a specified width, wherein the smartphone cannot be easily moved in a Y- and Z-direction when rotating a holding part to change orientation, and also at the back side, a device located at the side of the clamp cannot be easily hidden.

Abstract: A holding device for holding a held object is downsized to reduce an occupied space in an installation space. The holding device in which a holding mechanism for holding the held object is supported on a device main body so as to slidably project and retract includes a lock mounted on the holding mechanism and configured to lock the holding mechanism at an arbitrary projected position, the lock part including a first rotary body pivotally supported on the holding mechanism and configured to rotate upon application of certain operation, a second rotary body that rotates by a force directly or indirectly applied from the first rotary body by the rotation of the first rotary body, and an engagement part that moves between an engaged position at which the engagement part is engaged to the device main body and a disengaged position by the rotation of the second rotary body.

Abstract: A holding mechanism prevents a device at a back side of a held object from being hidden by the object. Even if a large smartphone is held, clamping with a fixed clamping part and a movable clamping part prevents the fixed part from being moved, wherein a device located back of the smartphone and at the side of the fixed clamping part cannot be hidden by the smartphone. Due to the movable clamping part being movable farther from a rotation axis than the fixed clamping part, a middle portion of the smartphone in the clamping direction substantially coincides with the rotation axis when holding a smartphone with a specified width, wherein the smartphone cannot be easily moved in a Y- and Z-direction when rotating a holding part to change orientation, and also at the back side, a device located at the side of the clamp cannot be easily hidden.

Abstract: A holding mechanism prevents a device at a back side of a held object from being hidden by the object. Even if a large smartphone is held, clamping with a fixed clamping part and a movable clamping part prevents the fixed part from being moved, wherein a device located back of the smartphone and at the side of the fixed clamping part cannot be hidden by the smartphone. Due to the movable clamping part being movable farther from a rotation axis than the fixed clamping part, a middle portion of the smartphone in the clamping direction substantially coincides with the rotation axis when holding a smartphone with a specified width, wherein the smartphone cannot be easily moved in a Y- and Z-direction when rotating a holding part to change orientation, and also at the back side, a device located at the side of the clamp cannot be easily hidden.

Abstract: This valve device is provided with: a body (10) that has at least one passage (11, 12) for passing a fluid and valve shaft holes (13, 14, 15); a valve shaft (20), which is passed through the valve shaft holes so as to be rotatable; and butterfly valves (30, 40), which are fixed on the valve shaft and are for opening and closing the passages (11, 12). The butterfly valves (30, 40) are disposed so as to close the passages (11, 12) on a downstream side or an upstream side of the valve shaft holes (13, 14, 15) in a flow direction of the fluid. As a result, it is possible to prevent fluid leakage and achieve effective utilization of exhaust heat in an exhaust heat recovery system.

Abstract: A holding mechanism prevents a device at a back side of a held object from being hidden by the object. Even if a large smartphone is held, clamping with a fixed clamping part and a movable clamping part prevents the fixed part from being moved, wherein a device located back of the smartphone and at the side of the fixed clamping part cannot be hidden by the smartphone. Due to the movable clamping part being movable farther from a rotation axis than the fixed clamping part, a middle portion of the smartphone in the clamping direction substantially coincides with the rotation axis when holding a smartphone with a specified width, wherein the smartphone cannot be easily moved in a Y- and Z-direction when rotating a holding part to change orientation, and also at the back side, a device located at the side of the clamp cannot be easily hidden.

Abstract: A holding device for holding a held object is downsized to reduce an occupied space in an installation space. The holding device in which a holding mechanism for holding the held object is supported on a device main body so as to slidably project and retract includes a lock mounted on the holding mechanism and configured to lock the holding mechanism at an arbitrary projected position, the lock part including a first rotary body pivotally supported on the holding mechanism and configured to rotate upon application of certain operation, a second rotary body that rotates by a force directly or indirectly applied from the first rotary body by the rotation of the first rotary body, and an engagement part that moves between an engaged position at which the engagement part is engaged to the device main body and a disengaged position by the rotation of the second rotary body.

Abstract: This valve device is provided with: a body (10) that has at least one passage (11, 12) for passing a fluid and valve shaft holes (13, 14, 15); a valve shaft (20), which is passed through the valve shaft holes so as to be rotatable; and butterfly valves (30, 40), which are fixed on the valve shaft and are for opening and closing the passages (11, 12). The butterfly valves (30, 40) are disposed so as to close the passages (11, 12) on a downstream side or an upstream side of the valve shaft holes (13, 14, 15) in a flow direction of the fluid. As a result, it is possible to prevent fluid leakage and achieve effective utilization of exhaust heat in an exhaust heat recovery system.

Abstract: A room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1): —SiXaR13−a  (1) wherein R1 is a C1-20 substituted or unsubstituted monovalent organic group, X is a hydroxyl group or a hydrolyzable group, a is 1, 2 or 3, provided that when more than one R1 group is present, the R1 groups may be the same or different, and when more than one X group is present, the X groups may be the same or different, the composition comprising, as an essential component, the polyoxyalkylene polymer, having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of formula (1), wherein a is 3, or the composition comprises a polyoxyalkylene polymer component as defined above which contains said essential specific polyoxyalkylene polymer component, and a polymer (B) made by polymerization of a polymerizable unsaturated group-containing monom

Abstract: A room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1):

Abstract: A curable composition comprising a reactive silicon group-containing oxyalkylene polymer (A1) having at least one group of the formula 1 at its molecular terminal and satisfying the following (a) to (c), and a curing accelerator:

Abstract: The present invention provides a room temperature-setting composition containing a polyoxyalkylene polymer (A), having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1), which comprises, as an essential component, the polyoxyalkylene polymer, having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1), wherein a is 3 and a room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1), which comprises, as essential components, the polyoxyalkylene polymer having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1) wherein a is 3, and a polymer (B) made by polymerization of a polymerizable unsaturated group-containing monomer (C): —SiXaR13−a  (1) wherein R1 is a C1-20 substituted or unsubstituted monovalent organic group

Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

Abstract: The present invention has an object of producing a polyoxyalkylene compound by ring-opening polymerization of an alkylene oxide to a certain specific highly hydrophobic initiator. The present invention provides a process for producing a polyoxyalkylene compound, characterized in that the polyoxyalkylene compound is produced by ring-opening polymerization of an alkylene oxide, in the presence of a plural metal cyanide complex catalyst, with an initiator selected from an organopolysiloxane compound having an active hydrogen-containing functional group to which an alkylene oxide is reactive, and a fluorine-containing compound having such an active hydrogen-containing functional group and a fluorinated hydrocarbon group.

Abstract: A method for purifying a polyoxyalkylene alcohol, which comprises treating with a treating agent consisting essentially of a pH buffer, a polyoxyalkylene alcohol containing a double metal cyanide complex catalyst, synthesized by ring-opening polymerization of an alkylene oxide in the presence of said catalyst, and then removing the catalyst and the treating agent from the polyoxyalkylene alcohol.

Abstract: A process for producing a shaped article of a non-cellular or microcellular polyurethane elastomer by reaction injection molding by using a high molecular weight active hydrogen compound component (A), a chain extender component (B) and a polyisocyanate compound component (C) as starting materials,wherein(I) the high molecular weight active hydrogen compound component (A) comprises(1) at least one polyoxyalkylene polyol (a-1) having an average molecular weight per hydroxyl group of from 800 to 4000 and an average number of hydroxyl groups per molecule of from 2 to 8 and containing at least 5% by weight of oxyethylene groups at the terminal portions of its molecules,(2) a high molecular weight amine (a-2) having from 2 to 8 active hydrogen-containing groups, and optionally(3) a high molecular weight polyol (a-3) other than the polyalkylene polyol (a-1), and(II) the chain extender component (B) comprises(1) a low molecular weight polyol (b-1) having from 2 to 4 hydroxyl groups and a molecular weight of at most