摘要:
An edge connector is adapted for use with a printed circuit board having a mating edge and a plurality of contact pads on opposite sides of the board adjacent the edge. The connector includes an elongated dielectric housing having a slot for receiving the mating edge of the printed circuit board. A plurality of terminals are mounted on the housing along the slot. Each terminal includes a pair of side support portions fixed to the housing outside opposite sides of the slot, a cross brace portion extending between the side support portions, a terminating portion projecting below the cross brace portion and a spring contact arm projecting upwardly from the cross brace portion and including a contact portion for engaging one of the contact pads on the printed circuit board. The terminals are oriented in an alternating array along the slot whereby the contact portions alternatingly engage contact pads on opposite sides of the printed circuit board.
摘要:
An articulated shield tunneling machine suitable for excavation along a curvature with an articulated shield having front and rear shield sections. In contrast to the conventional apparatus which suffers from various disadvantages such as interference between the front ends of shield jacks with front shield section and necessity for expensive strong construction of shield jacks, the articulated shield tunneling machine of the present invention has trunnions (10) to which the shield jacks (7) are connected, and the trunnions (10) are connected to front portions of the rear shield section (1b) for pivotal movement in the radial direction of the articulated shield (1). Each trunnion (10) can have therein an elastic member which urges the front end of the shield jack (7) towards the center of the articulated shield (1). With this arrangement, it is possible to conduct excavation along a curve of a small radius of curvature, with a simple and inexpensive articulated shield composed of two shield sections, without allowing any interference between the shield jacks and the front shield section.
摘要:
A fuel injection valve for injecting into a combustion chamber of an internal combustion engine, comprises a valve housing with a fuel inlet and nozzle portion having an injection opening, a first fuel passage for communicating the nozzle portion with the fuel inlet, a first needle valve element for opening and closing the injection opening, a first spring for urging the first needle valve element to close the first fuel passage, a pin disposed for providing an axial gap between the first needle valve element and itself, a second pin urging the pin towards the first needle valve element, a second fuel passage for communicating the back pressure chamber with the fuel inlet, an ON-OFF valve for opening and closing the fuel passage, a drain passage for communicating the back pressure chamber to a lower pressure than that of the back pressure chamber and an orifice disposed in the drain passage.
摘要:
A method and apparatus for controlling the injection of fuel into an internal combustion engine having a plurality of unit injectors which are each controllable separately for each cylinder of the engine. The occurrence of a malfunction in the fuel injection of each of the injectors is discriminated in accordance with the engine operating condition detected by sensors whereby when the presence of a malfunction in the injector of any one of the cylinders is discriminated, the operation of the engine is not stopped but the operation is continued in a fault mode of operation so that the injection of fuel from the malfunctioning injector is stopped and the injection of fuel from the injector of at least one of the other cylinders is stopped or its number of events of injection is decreased from the standpoint of balance in the generation of engine power output.
摘要:
This computation device and method exponentially shortens a computation time of an NP-complete problem or the like mapped into an Ising model by exponentially shortening a computation time of the Ising mode. For each pair of a plurality of slave lasers, by controlling the intensity, the polarization, and the phase of light exchanged between two slave lasers using an attenuator and a wave plate, the magnitude and the sign of pseudo Ising interaction between two slave lasers are implemented. Then, after the plurality of slave lasers arrive at a steady state, by measuring the polarization of light generated by each slave laser with left-handed circular polarization and right-handed circular polarization used as bases, a pseudo spin of each slave laser is measured.
摘要:
Differential phase shift (DPS) quantum key distribution (QKD) is provided, where the average number of photons per transmitted pulse is predetermined such that the secure key generation rate is maximal or nearly maximal, given other system parameters. These parameters include detector quantum efficiency, channel transmittance and pulse spacing (or clock rate). Additional system parameters that can optionally be included in the optimization include baseline error rate, sifted key error rate, detector dead time, detector dark count rate, and error correction algorithm performance factor. The security analysis leading to these results is based on consideration of a hybrid beam splitter and intercept-resend attack.
摘要:
A metal-clad laminate, including metal foil, and a first resin layer arranged on the metal foil, the first resin layer including an epoxy resin and a fluoropolymer with a curable functional group. Also disclosed is a method of producing the metal-clad laminate.
摘要:
In a rotor for the dynamo, the interior circumference face of a rotor core main body makes contact in a thermally transmissible manner with a rotor axle, and the rotor axle includes a cooling medium circulation space. The rotor is provided with a cooling medium supply member, which supplies the cooling medium to the cooling medium circulation space. The cooling medium supply member is provided with a cooling medium supply path that extends in the rotor axle direction, and cooling medium supply holes that extend externally in the direction of the rotor diameter. The cooling medium supply holes are provided with supply apertures that open toward the cooling interior circumference face. The rotor axle is provided with cooling medium discharge holes that extend externally in the direction of the rotor diameter. The cooling medium discharge holes are provided with discharge apertures that open externally in the diameter direction.
摘要:
In an exhaust gas treatment system including a denitration device that removes nitrogen oxide in exhaust gas from a heavy fuel-fired boiler, an air preheater that recovers heat in the gas after the nitrogen oxide is removed, an electric precipitator that removes dust while adding ammonia into the gas after heat recovery, a desulfurization device that removes sulfur oxide in the gas after dust removal, and a stack that exhausts the gas after desulfurization to the outside, an ash-shear-force measuring instrument is provided to measure an ash shear force, which is ash flowability, on the downstream side of the electric precipitator, so that a feed rate of an air supply unit that supplies air to the boiler is reduced according to ash shear-force information.
摘要:
In a direction control valve, a bottom face of an insertion hole of a first movable member is at a predetermined distance from a second movable member with respect to a first axial direction when communication between a first communication switching port and a communication object port is made and communication between a second communication switching port and the communication object port is broken. The bottom face contacts and pushes the second movable member in a second axial direction opposite to the first axial direction after the first movable member moves in the second axial direction by the predetermined distance while the first and second movable members move in the second axial direction to switch a port communicating with the communication object port from the first communication switching port to the second communication switching port.