Abstract: A rubber crawler including: an endless belt shaped rubber belt; a main cord layer that is disposed within the rubber belt, that is configured by plural main cords extending along a crawler peripheral direction and arranged side-by-side in a crawler width direction, and that is formed with an overlapping portion where both end, sides in the crawler peripheral direction overlap one another in a crawler thickness direction; and a stretching and contracting portion that is formed at the overlapping portion of the main cords, and is capable of stretching and contracting more in the crawler peripheral direction than other portions of the main cords, wherein the stretching and contracting portion includes a curved portion where the main cords are curved with an amplitude in the crawler width direction as viewed along the crawler thickness direction.

Abstract: An elastic crawler includes an elastic crawler body and plural cord layers. The elastic crawler body is shaped into an endless loop. The plural cord layers are formed by plural cords covered by the elastic body, and the plural cord layers are embedded in the elastic crawler body. Respective cords included in mutually adjacent cord layers are disposed so as to intersect each other when viewed along a thickness direction of the elastic crawler body, and in at least one pair of adjacent cord layers inside at least a partial region of the elastic crawler body, a total area of portions where the respective cords included in each layer of the adjacent cord layers overlap with each other, is smaller than a total area of portions where respective regions of each layer of the adjacent cord layers in which none of the cords are disposed overlap with each other.

Abstract: An elastic crawler includes an elastic crawler body and plural cord layers. The elastic crawler body is shaped into an endless loop. The plural cord layers are formed by plural cords covered by the elastic body, and the plural cord layers are embedded in the elastic crawler body. Respective cords included in mutually adjacent cord layers are disposed so as to intersect each other when viewed along a thickness direction of the elastic crawler body, and in at least one pair of adjacent cord layers inside at least a partial region of the elastic crawler body, a total area of portions where the respective cords included in each layer of the adjacent cord layers overlap with each other, is smaller than a total area of portions where respective regions of each layer of the adjacent cord layers in which none of the cords are disposed overlap with each other.

Abstract: A rubber crawler serving as an example of a crawler of the present invention includes: an endless belt shaped rubber belt; a main cord layer that is disposed within the rubber belt, that is configured by plural main cords extending along a crawler peripheral direction and arranged side-by-side in a crawler width direction, and that is formed with an overlapping portion where both end sides in the crawler peripheral direction overlap one another in a crawler thickness direction; and a stretching and contracting portion that is formed at the overlapping portion of the main cords, and is capable of stretching and contracting more in the crawler peripheral direction than other portions of the main cords, wherein the stretching and contracting portion includes a curved portion where the main cords are curved with an amplitude in the crawler width direction as viewed along the crawler thickness direction.

Abstract: A sprocket used to transmit drive force to a coreless crawler track having rubber projections arranged at predetermined intervals on the inner peripheral surface of the crawler track. The sprocket has, on its circumferential edge, sprocket teeth arranged at the same pitch as the rubber projections. A cutout is formed at the outer circumferential tip of each sprocket tooth. Even if meshing between the rubber projections and the sprocket teeth has a trouble caused by the entry of soil and sands, the rubber projections are affected less, which greatly contributes to improvement of durability of the crawler track.

Abstract: The present invention provides a crawler in which, due to alteration of a shape of rubber projections which mesh with a sprocket, even when earth, sand and the like has been deposited at an inner peripheral surface of the crawler, damage to the concerned rubber projections will not be incurred. It is a core-less crawler track at an inner peripheral surface of which rubber projections for driving are formed with a certain pitch. In side view, the rubber projections form a substantially triangular shape provided with a drive side inclination surface Pa and a brake side inclination surface Pb. The inclination surfaces of this rubber projection are divided into the drive side inclination surface Pa and the brake side inclination surface Pb. Steps D are formed at both the inclination surfaces.

Abstract: A structure of a coreless crawler comprising: main cords that are embedded in rows in a longitudinal direction of the crawler, two layers of bias cords (a, b) that are embedded at an outer peripheral side of the main cords, bias cords (c) that are laid perpendicular to the main cords and embedded at an inner peripheral side of the main cords, rubber protrusions that are formed at constant intervals at a central portion on an inner peripheral surface of the crawler, and rubber lugs that are formed on an outer peripheral surface of the crawler, wherein the bias cords (a, b, c) and the main cords are held between treatment rubbers, and a rubber layer having lower hardness than treatment rubber is interposed between the main cords and the bias cords (c).

Abstract: A sprocket used to transmit drive force to a coreless crawler track having rubber projections arranged at predetermined intervals on the inner peripheral surface of the crawler track. The sprocket has, on its circumferential edge, sprocket teeth arranged at the same pitch as the rubber projections. A cutout is formed at the outer circumferential tip of each sprocket tooth. Even if meshing between the rubber projections and the sprocket teeth has a trouble caused by the entry of soil and sands, the rubber projections are affected less, which greatly contributes to improvement of durability of the crawler track.

Abstract: The present invention provides a crawler in which, due to alteration of a shape of rubber projections which mesh with a sprocket, even when earth, sand and the like has been deposited at an inner peripheral surface of the crawler, damage to the concerned rubber projections will not be incurred. It is a core-less crawler track at an inner peripheral surface of which rubber projections for driving are formed with a certain pitch. In side view, the rubber projections form a substantially triangular shape provided with a drive side inclination surface Pa and a brake side inclination surface Pb. The inclination surfaces of this rubber projection are divided into the drive side inclination surface Pa and the brake side inclination surface Pb. Steps D are formed at both the inclination surfaces.

Abstract: Even if track rollers roll both on the left and right of rubber protrusions, bias cords are not broken, whereby cracking or chipping of rubber and rusting or cutting of the main cords resulting from cracking or chipping of the rubber are prevented.

Abstract: A rubber crawler having a very good straight driving property is obtained by modifying a method of embedding bias cords in a rubber crawler and neutralizing shear stresses caused by tensile load of bent portions of the crawler when the crawler is entrained about a vehicle main body. The rubber crawler is comprised of an endless rubber elastic body, a main cord row, two layers of bias cords having opposite angles of inclination, guide projections, and a lug. The bias cords of the first layer at a side near the main cord row are embedded over a region having substantially the same transverse dimension as that of the main cord row, at a fixed angle of inclination, and the bias cords of the second layer are divided into two sections, covering a region having substantially the same transverse dimension as that of the bias cords of the first layer other than a portions corresponding to the guide projections.

Abstract: A temperature-programmed desorbed gas analyzing apparatus including a sample chamber 1 in which a sample S is disposed, an infrared heating furnace 2 for heating the sample S disposed in the sample chamber 1, a measuring chamber 3 in which gas desorbed from the sample S by heating is introduced, a turbo molecular pump 4 for reducing the pressure in the measuring chamber 3, a mass spectrometer 5 having a gas detection portion 5a disposed in the measuring chamber 3, an intermediate pressure-reduced chamber 6 provided between the sample chamber 1 and the measuring chamber 3, a first orifice 7 which the intermediate pressure-reduced chamber 6 and the sample chamber 1 intercommunicate with each other, and a second orifice 8 through which the intermediate pressure-reduced chamber 6 and the measuring chamber 3 intercommunicate with each other, and the desorbed gas occurring in the sample chamber 1 is introduced through the first orifice 7, the intermediate pressure-reduced chamber 6 and the second orifice 8 into the

Abstract: The object of the present invention is to provide a coreless rubber which ensures running stability by compensating shift (deviation) in the width direction even if prepared by combination of usual rollers, and which is easily and in low cost prepared by adoption of simple structure.

Abstract: A rubber crawler having a very good straight driving property is obtained by modifying a method of embedding bias cords in a rubber crawler and neutralizing shear stresses caused by tensile load of bent portions of the crawler when the crawler is entrained about a vehicle main body. The rubber crawler is comprised of an endless rubber elastic body, a main cord row, two layers of bias cords having opposite angles of inclination, guide projections, and a lug. The bias cords of the first layer at a side near the main cord row are embedded over a region having substantially the same transverse dimension as that of the main cord row, at a fixed angle of inclination, and the bias cords of the second layer are divided into two sections, covering a region having substantially the same transverse dimension as that of the bias cords of the first layer other than a portions corresponding to the guide projections.

Abstract: In a method for measuring thermo electricity and an apparatus thereof, enabling to measure the physical characteristics including electrification of a sample even in a humid (water-vapor) atmosphere, a sample 10 of powder to be measured and formed in a predetermined shape is disposed within an inside of an electric furnace 30, building up a heating and temperature increasing portion, which is stored within a constant-temperature container of three(3)-layers (51, 52, 53) structure (or may be two(2)-layers structure), forming a measuring chamber 50 in an inside thereof. While increasing the temperature, a measuring apparatus for detecting the thermal stimulated current (TSC) by means of a minute current detector connected to electrodes, which are provided opposing to the sample 10, and there is further provided a water-vapor generating apparatus 100 for guiding a water-vapor atmosphere at a predetermined value into the measuring chamber 50 of the constant-temperature container.

Abstract: Disclosed is a temperature correction method for a thermal analysis apparatus which measures electric current, voltage, and electric resistance of a measurement sample while changing the temperature of the measurement sample set between a pair of electrodes. The paired electrodes are connected by a reference substance, and a weight is set on the reference substance. The temperature at the time when the reference substance is fused and the weight falls cutting the reference substance is measured actually as melting point by a temperature sensor. Based on a difference between the actually measured value and a literature value of the melting point of the reference substance, the temperature measured by the temperature sensor is corrected.

Abstract: A temperature-programmed desorbed gas analyzing apparatus including a sample chamber 1 in which a sample S is disposed, an infrared heating furnace 2 for heating the sample S disposed in the sample chamber 1, a measuring chamber 3 in which gas desorbed from the sample S by heating is introduced, a turbo molecular pump 4 for reducing the pressure in the measuring chamber 3, a mass spectrometer 5 having a gas detection portion 5a disposed in the measuring chamber 3, an intermediate pressure-reduced chamber 6 provided between the sample chamber 1 and the measuring chamber 3, a first orifice 7 which the intermediate pressure-reduced chamber 6 and the sample chamber 1 intercommunicate with each other, and a second orifice 8 through which the intermediate pressure-reduced chamber 6 and the measuring chamber 3 intercommunicate with each other, and the desorbed gas occurring in the sample chamber 1 is introduced through the first orifice 7, the intermediate pressure-reduced chamber 6 and the second orifice 8 into the

Abstract: In a method for measuring thermoelectricity and an apparatus thereof, enabling to measure the physical characteristics including electrification of a sample even in a humid (water-vapor) atmosphere, a sample 10 of powder to be measured and formed in a predetermined shape is disposed within an inside of an electric furnace 30, building up a heating and temperature increasing portion, which is stored within a constant-temperature container of three(3)-layers (51, 52, 53) structure (or may be two(2)-layers structure), forming a measuring chamber 50 in an inside thereof. While increasing the temperature, a measuring apparatus for detecting the thermal stimulated current (TSC) by means of a minute current detector connected to electrodes, which are provided opposing to the sample 10, and there is further provided a water-vapor generating apparatus 100 for guiding a water-vapor atmosphere at a predetermined value into the measuring chamber 50 of the constant-temperature container.

Abstract: The object of the present invention is to provide a coreless rubber which ensures running stability by compensating shift (deviation) in the width direction even if prepared by combination of usual rollers, and which is easily and in low cost prepared by adoption of simple structure.

Abstract: In a sample assembly for a thermoelectric analyzer, typically TSC (Thermally Stimulated Current) analyzer, a sample is fixed to an electrically-insulating substrate via an adhesive layer. The material of the adhesive layer is indium or gold-tin alloy. The substrate has a pair of junction electrode layers formed thereon and a pair of electrode layers formed on the same plane of the sample. One of the electrode layers is connected with one of the junction electrode layers by electrically-conductive wire, while the other of the electrode layers is connected with the other of the junction electrode layers by another electrically-conductive wire. The substrate is made of preferably made of a highly electrically-insulating and highly thermally-conductive material which may be, for example, aluminum nitride (AlN), boron nitride (BN), beryllium oxide (BeO) or aluminum oxide (Al2O3). The sample may preferably be a compound semiconductor such as GaAs.