Abstract: The present invention relates to an oil cooling apparatus for hydrostatic transmissions that includes a cooling main body coupled to a transmission case in which a hydrostatic transmission is installed; an accommodating groove formed in the cooling main body to accommodate oil; a cover unit coupled to the cooling main body to cover the accommodating groove; a supply port configured to supply the oil to the accommodating groove; a discharge port configured to discharge the oil from the accommodating groove; a plurality of guide ribs installed at positions spaced apart from each other to guide a flow direction of oil flowing along a flow path formed in the accommodating groove; a first hurdle unit coupled to at least one of the guide ribs to form a first flow region through which the oil passes; and a second hurdle unit coupled to at least one of the guide ribs to form a second flow region through which the oil passes.

Abstract: An agricultural work vehicle according to an aspect of the invention that can monitor a state of the agricultural work vehicle when the agricultural work vehicle performs agricultural work using a working machine which is attached thereto includes: a vehicle body; a working machine that is attached to the front or rear of the vehicle body and performs agricultural work; an engine that generates a driving force for movement of the vehicle body and work of the working machine; and a monitoring device that determines at least one of whether there is an abnormality in a temperature of a coolant for cooling the engine, whether there is an abnormality in a pressure of an engine oil supplied to the engine, and whether there is an abnormality in the engine when the working machine performs work using the driving force.

Abstract: An agricultural work vehicle according to an aspect of the invention that can monitor a state of the agricultural work vehicle when the agricultural work vehicle performs agricultural work using a working machine which is attached thereto includes: a vehicle body; a working machine that is attached to the front or rear of the vehicle body and performs agricultural work; an engine that generates a driving force for movement of the vehicle body and work of the working machine; and a monitoring device that determines at least one of whether there is an abnormality in a temperature of a coolant for cooling the engine, whether there is an abnormality in a pressure of an engine oil supplied to the engine, and whether there is an abnormality in the engine when the working machine performs work using the driving force.

Abstract: The present invention relates to an oil cooling apparatus for hydrostatic transmissions that includes a cooling main body coupled to a transmission case in which a hydrostatic transmission is installed; an accommodating groove formed in the cooling main body to accommodate oil; a cover unit coupled to the cooling main body to cover the accommodating groove; a supply port configured to supply the oil to the accommodating groove; a discharge port configured to discharge the oil from the accommodating groove; a plurality of guide ribs installed at positions spaced apart from each other to guide a flow direction of oil flowing along a flow path formed in the accommodating groove; a first hurdle unit coupled to at least one of the guide ribs to form a first flow region through which the oil passes; and a second hurdle unit coupled to at least one of the guide ribs to form a second flow region through which the oil passes.

Abstract: An optical module includes optical transmission member, optical element, substrate, electrode pad between the optical element and external circuit, and optical block including optical transmission member mounting portion. The optical transmission member mounting portion is formed on the optical block in optical axis direction such that optical transmission efficiency is the maximum. A manufacturing method of the optical module includes mounting and electrically connecting the optical element on one face of the substrate, calculating a position on a 2-dimensional plane of optical input/output point of the optical element, forming base material of the optical block to impregnate the optical element onto the substrate, forming the optical transmission member mounting portion at the position on the 3-dimensional plane of the optical input/output point calculated in the former step on the base material, and mounting the optical transmission member on the optical transmission member mounting portion.

Abstract: An optical module includes optical transmission member, optical element, substrate, electrode pad between the optical element and external circuit, and optical block including optical transmission member mounting portion. The optical transmission member mounting portion is formed on the optical block in optical axis direction such that optical transmission efficiency is the maximum. A manufacturing method of the optical module includes mounting and electrically connecting the optical element on one face of the substrate, calculating a position on a 2-dimensional plane of optical input/output point of the optical element, forming base material of the optical block to impregnate the optical element onto the substrate, forming the optical transmission member mounting portion at the position on the 3-dimensional plane of the optical input/output point calculated in the former step on the base material, and mounting the optical transmission member on the optical transmission member mounting portion.

Abstract: The present invention relates to a method for manufacturing a low roughness electrodeposited copper foil, and an electrodeposited copper foil manufactured thereby, and uses an electrolyte which basically consists of a sulfuric acid, a copper ion and a chloride ion is adapted with an additive which consists of a HEC (Hydroxyethyl Cellulose) of 0.05˜50 ppm, a SPS (bis(sodiumsulfopropyl)disulfide) of 0.05˜20 ppm, and a gelatin of 0.1˜100 ppm. The present invention is adapted to manufacture a low roughness electrodeposited copper foil using a conventional copper foil manufacture facility and the electrodeposited copper foil according to the present invention is adapted as a material for a copper clad laminate for a printed circuit substrate and an electrode material for a lithium ion battery.