Abstract: The present invention provides a reversible thermosensitive recording medium including: a support, and a reversible thermosensitive recording layer laid on the support, the recording layer containing a reversible thermosensitive composition, wherein the reversible thermosensitive composition forms a relatively color-developed state and a colorless state depending on a difference in a heating temperature and/or a cooling rate after heating by the use of an electron-donating color-forming compound and an electron-accepting compound; a resin component contained in the reversible thermosensitive recording layer is a resin in which a polyol resin having a hydroxyl value within the range of 100 KOHmg/g to 250 KOHmg/g is crosslinked; and as the electron-accepting compound, a urea compound represented by the following General Formula (1) is used, where “n” is an integer of 23 or greater.

Abstract: The present invention provides a thermoreversible recording medium which includes a support, a thermoreversible recording layer which comprises a thermoreversible composition containing an electron-donating color-forming compound and an electron-accepting compound, a metal compound-containing layer which includes a resin, an organic metal compound, and an inorganic layer compound, in which the resin is at least one selected from the group consisting of polyvinyl alcohol polymers, and ethylene-vinyl alcohol copolymers, and the organic metal compound is at least one selected from the group consisting of an organic titanium compound and an organic zirconium compound, and a protective layer which protects the metal compound-containing layer, wherein the support, the thermoreversible recording layer, the metal compound-containing layer and the protective layer are laminated in this order.

Abstract: A bearing seal includes: a ring-shaped outer seal portion; a ring-shaped inner seal portion provided inside the outer seal portion; a connecting portion for connecting the inner seal portion and the outer seal portion; and a ring-shaped rigid portion provided at the connecting portion. The outer seal portion, the inner seal portion, and the connecting portion are integrally formed of the same material consisting of an elastic material. The inner seal portion has rigidity higher than that of the outer seal portion, and has a ring-shaped seal surface gradually approaching a ring center axis of the inner seal portion while extending from a ring-shaped base end side connected to the connecting portion toward a distal end side. The inner seal portion is formed in a tapered cylindrical shape having the ring-shaped seal surface on an inner peripheral surface thereof, and has a thickness which gradually decreases from the base end side toward the distal end side.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A heat resistance improver including a heat resistance improving component which has a benzotriazole skeleton having an electron attractive group and a reactive aliphatic hydroxyl group or a reactive aliphatic mercapto group, wherein the heat resistance improver is used in a reversible thermosensitive recording medium.

Abstract: An engine valve device includes an intake valve which opens and closes an intake port by a pressing force of a rotating cam and a pressing force of a valve spring, a piston which is movable in a same direction as the intake valve, a cylinder portion which houses the piston such that the piston is movable inside, a hydraulic actuator including the piston and the cylinder portion, a supply discharge pipe line which communicates with a pressure chamber formed by the piston and the cylinder portion, an accumulator which accumulates hydraulic oil flowed out from the pressure chamber via the supply discharge pipe line, and an electromagnetic on-off valve which controls a flow of the hydraulic oil between the pressure chamber and the accumulator. The electromagnetic on-off valve is arranged on the supply discharge pipe line between the hydraulic actuator and the accumulator.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A multi-input multi-output communication device can communicate with other communication device. The multi-input multi-output communication device includes: an antenna device configured to perform communication using a plurality of polarized waves; a transmitting circuit configured to divide data to be transmitted into a plurality of data streams, and transmit the data by multiplexing signals corresponding to the data streams on the plurality of polarized waves from the antenna device; and a receiving circuit configured to receive data by separating signals multiplexed at the other communication device from a signal received by the antenna device via the plurality of polarized waves.

Abstract: The present invention provides a reversible thermosensitive recording medium including: a support, and a reversible thermosensitive recording layer laid on the support, the recording layer containing a reversible thermosensitive composition, wherein the reversible thermosensitive composition forms a relatively color-developed state and a colorless state depending on a difference in a heating temperature and/or a cooling rate after heating by the use of an electron-donating color-forming compound and an electron-accepting compound; a resin component contained in the reversible thermosensitive recording layer is a resin in which a polyol resin having a hydroxyl value within the range of 100 KOHmg/g to 250 KOHmg/g is crosslinked; and as the electron-accepting compound, a urea compound represented by the following General Formula (1) is used, where “n” is an integer of 23 or greater.

Abstract: A reversible thermosensitive recording material including a support, a reversible thermosensitive recording layer, and a gas barrier layer, the reversible thermosensitive recording layer and gas barrier layer being laid over the support, wherein the reversible thermosensitive recording layer is formed of a reversible thermosensitive composition containing a mixture of an electron-accepting compound and an electron-donating color-forming compound whose color-developed state varies depending upon at least one of a heating temperature and a cooling rate after heating, and wherein the gas barrier layer contains an inorganic layered compound and a gas barrier resin which is at least one selected from the group consisting of polyvinyl alcohol polymers and ethylene-vinyl alcohol copolymers.

Abstract: It is an object of the present invention to provide a bearing seal not only whose sealing performance is favorable in normal time, but also whose sealing performance can be prevented from being deteriorated when subjected to vibration caused by impact. A bearing seal includes: a ring-shaped outer seal portion 51; a ring-shaped inner seal portion 52 provided inside the outer seal portion 51; a connecting portion 53 for connecting the inner seal portion 52 and the outer seal portion 51; and an inner ring 60 provided at the connecting portion 53. The outer seal portion 51, the inner seal portion 52, and the connecting portion 53 are integrally formed of the same material consisting of an elastic material.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: The present invention is to provide a reversible two-color heat-sensitive recording material which uses an electron-donative dye precursor which is usually colorless or a pale color and an electron-accepting compound, and a reversible heat-sensitive color-forming composition which is capable of forming a color-formation state and decolorization state relatively due to difference in heating temperature and/or cooling rate after heating is formed on a support, wherein the reversible heat-sensitive color-forming composition comprises at least two kinds of compositions having different color tones to be formed and the compositions are each present separately and in an independent state, and crystallization rates of the electron-donative compounds at the time of changing from the color-formation state to the decolorization state are different from each other.

Abstract: A hydraulic pipe arrangement of a working machine is not in contact with an obstacle and no torsion and no bending are generated. Accordingly, in a hydraulically driven type working machine provided with a boom (1) having a vertical swing supporting point supported at a base end side by a machine frame and a joint connection supporting point in a front end side, an arm (2) connected in a base end side to the joint connection supporting point, a boom driving hydraulic cylinder (6a) hoisting around a hoist supporting point provided in the machine frame so as to drive the boom, an arm driving hydraulic cylinder (7), and a working tool driving hydraulic cylinder (8), a swivel joint mechanism relaying a hydraulic pipe arrangement from a side of the machine frame is provided at a center of at least one of the vertical swing supporting point, the joint connection supporting point and the boom driving hydraulic cylinder hoist supporting point.

Abstract: A hydraulic pipe arrangement of a working machine is not in contact with an obstacle and no torsion and no bending are generated. Accordingly, in a hydraulically driven type working machine provided with a boom (1) having a vertical swing supporting point supported at a base end side by a machine frame and a joint connection supporting point in a front end side, an arm (2) connected in a base end side to the joint connection supporting point, a boom driving hydraulic cylinder (6a) hoisting around a hoist supporting point provided in the machine frame so as to drive the boom, an arm driving hydraulic cylinder (7), and a working tool driving hydraulic cylinder (8), a swivel joint mechanism relaying a hydraulic pipe arrangement from a side of the machine frame is provided at a center of at least one of the vertical swing supporting point, the joint connection supporting point and the boom driving hydraulic cylinder hoist supporting point.

Abstract: Disclosed is a reversible heat-sensitive recording material which is excellent in light resistance and is remarkably free from discoloration caused by exposure to light and erasing failure and which shows a high layer strength and has durability against repeated printing and erasing, the reversible heat-sensitive recording material having a support, a reversible heat-sensitive recording layer formed on the support and at least one protective layer formed thereon, the reversible heat-sensitive recording layer containing a normally colorless or slightly colored dye precursor and a reversible color developer capable of causing a reversible change in color density of the dye precursor on the basis of a difference in cooling rate after heating, wherein at least one of the said layers contains an isocyanate compound and an ultraviolet absorbent capable of reacting with the isocyanate compound to undergo crosslinking.

Abstract: Disclosed is a reversible heat-sensitive recording material comprising a support and a reversible heat-sensitive recording layer containing a dye precursor which is usually colorless or a pale color and a reversible color developing agent capable of causing a reversible change in color density of the dye precursor due to the difference in cooling rate after heating, and the reversible color developing agent is a compound represented by the following formula (I): wherein R1 and R2 may be the same or different from each other and each represent a C1-18 divalent hydrocarbon group; R3 represents a C1-24 hydrocarbon group; X1 represents a divalent connecting group having at least one —CONH— bonding; X2 represents an oxygen atom or a sulfur atom; n is an integer of 1 to 3; and m is 0 or 1.