摘要:
An inverted F-type antenna apparatus is provided with a grounding conductor and an antenna element arranged on the grounding conductor so as to face the grounding conductor. The inverted F-type antenna apparatus further includes at least one coupling element provided between the grounding conductor and the antenna element so as to face the grounding conductor and the antenna element, and a connection conductor is provided for electrically connecting the antenna element with the grounding conductor at least in one place. In the inverted F-type antenna apparatus, the grounding conductor, the antenna element and the coupling element are arranged so as to be substantially parallel to each other.
摘要:
A displacement detecting switch device is assembled with ultrasonic welding techniques, so that easiness of assembling work for it is further increased. The device comprises a switch body including a cover body and a base plate; an operation lever disposed pivotably outside of the switching body; and a movable plate disposed inside of the switch body and linked with the operation lever. There are disposed a first joint portion and a second joint portion formed by ultrasonic welding between the cover body and the base plate and between the operation lever and the movable plate, respectively.
摘要:
A hydrogen-fueled internal combustion engine that uses liquid hydrocarbon fuel and hydrogen gas as fuel, which improves mixability of liquid hydrocarbon fuel and hydrogen gas and reduces the number of parts required for a fuel supply that supplies the two types of fuel. The hydrogen-fueled internal combustion engine includes a fuel injection device injecting hydrocarbon fuel; a fuel supply supplying hydrocarbon fuel to the fuel injection device; and a microbubble generation device generating microbubbles of hydrogen gas and mixing the generated microbubbles of hydrogen gas into liquid hydrocarbon fuel in the fuel supply. The hydrogen gas microbubbles are supplied, for instance, to a fuel supply path and fuel tank, which constitute the fuel supply.
摘要:
A hydraulic control apparatus (1) is provided with an oil pump (4) that draws oil from an oil pan (3) due to the rotation of the crankshaft, a piston jet (6) that open when the hydraulic pressure of the oil that has been drawn from this oil pump (4) attains a valve opening pressure Qa and injects oil toward a piston through an oil injection path (5), a relief valve (8) that is disposed on an oil return path (7) and opens when the hydraulic pressure of the oil that has been drawn by the oil pump (4) has attained a valve opening pressure Qb, and a switching valve (9) that is disposed on the oil return path (7). The valve opening pressure Qb is set to a pressure that is lower than that of the valve opening pressure Qa.
摘要:
For a PDC (Personal Digital Cellular) folding cellular phone that uses, for example, an 800-MHz band for communication, it is desirable to reduce a height of an antenna apparatus in order to reduce a thickness of the cellular phone.An antenna apparatus including an antenna element having a feeding plate, a ground plate arranged opposite the antenna element, a short circuit section that connects the antenna element and the ground plate together, and one or more ground wires each connected to the ground plate at a predetermined position and each having a (1) linear shape or a (2) bent or curved shape.
摘要:
A conductive metal frame and a first hinge portion fitted onto an upper case are connected electrically, first and second hinge portions are joined to turn on a rotating shaft, and the first and second hinge portions and the rotating shaft are formed of a conductive metal and conducted electrically via respective contact points. The second hinge portion as the feeding portion is connected to a matching circuit on a circuit board, and one end of a conductive metal element having a predetermined length is connected to the second hinge portion to have an electrical conduction thereto and the other end of the conductive metal element is opened. The conductive metal element is arranged in parallel with a direction orthogonal with a longitudinal direction of a lower case, and is arranged near a surface on the opposite side to the surface on which the operation keys are arranged.
摘要:
In the application of plasma spraying to a metal body, it is intended to attain reduction of spraying cost and improvement of working efficiency in roughening operation while maintaining anticorrosive effects. An adhesion strength of spray coating comparable to that obtained in the conventional combination of blast treatment and gas flame spraying can be realized even if roughening is conducted with the use of simple tools by performing in advance such a roughening treatment that the average roughness (Ra) of surface of thermal spray subject falls within the range of 2 to 10 μm with the use of a grinding tool and thereafter carrying out thermal spraying under such conditions that the average area of each of molten particles when molten particles of a thermal spray material have stuck to the surface of thermal spray subject falls within the range of 10000 to 100000 μm2. In the roughening by means of grinding tools, large-scale apparatus is not needed as different from the blast treatment, and portable small tools can be used in overhead location work at field repair. The scattering of powder resulting from grinding is slight so that the danger of environmental pollution is low.