Abstract: The present invention provides an optical multiplexer/demultiplexer which can demultiplex a multiplexed optical signal having a number of wavelength bands into respective wavelength regions, or multiplex light having respective wavelength regions in the field of optical communications. That is, light gained by multiplexing light having wavelengths ?1, ?2, ?3 and ?4 is emitted from an optical fiber (9a) and the optical axis thereof is bent by a micro lens (12a) of a micro lens array (14) so that the light is converted to parallel light which is then reflected from a mirror layer (19) so as to enter into a filter layer (17). A filter (17a) transmits only light having wavelength ?1, and light having other wavelengths is reflected and again reflected by the mirror layer (19) so as to enter into the filter layer (17). The optical axis of light that has transmitted through the filter (17a) is bent by a micro lens (12c) so that the light is coupled to an optical fiber (9c).

Abstract: [Problem] An optical path converting type optical coupling element able to be bidirectionally used and restrain the number of parts at its minimum is provided. [Means for Resolution] A resin molding body has two faces (front face 15 and lower face 19) perpendicular to each other, and also has a total reflecting face 23 approximately having an angle of 45° with respect to these two faces. Plural collimating lenses 16 and a spacer 17 are integrally formed on one face. Plural collimating lenses 20 and a spacer 21 are also integrally formed on the other face. A wall taking-away portion 26 is concavely arranged between the two faces so as to be located on the rear face side of the total reflecting face 23. Guide holes 18, 22 for inserting guide pins thereinto and connected to optical connectors, etc. are bored on the two faces of the resin molding body.

Abstract: An anti-reaction valve device is configured to open such that a plunger and a sheet member move away from each other in association with first and second set difference pressures. Two anti-reaction valve devices are provided between two pipes fluidically connected to a hydraulically powered actuator such that directional relationship of connection of primary and secondary ports is reversed between the two anti-reaction valve devices so that a reaction of the actuator is inhibited quickly and reliably. A one-way valve is positioned between the secondary port and an open and close control chamber within which the plunger and the sheet member are movable into contact with and away from each other and serves to inhibit a back flow of a hydraulic fluid. The one-way valve is capable of inhibiting the plunger and the sheet member from moving away from each other undesirably, and hence malfunction of the anti-reaction valve devices.

Abstract: An anti-reaction valve device is configured to open such that a plunger and a sheet member move away from each other in association with first and second set difference pressures. Two anti-reaction valve devices are provided between two pipes fluidically connected to a hydraulically powered actuator such that directional relationship of connection of primary and secondary ports is reversed between the two anti-reaction valve devices so that a reaction of the actuator is inhibited quickly and reliably. A one-way valve means is positioned between the secondary port and an open and close control chamber within which the plunger and the sheet member are movable into contact with and away from each other and serves to inhibit a back flow of a hydraulic fluid. The one-way valve means is capable of inhibiting the plunger and the sheet member from moving away from each other undesirably, and hence malfunction of the anti-reaction valve devices.

Abstract: The object of the present invention is to provide an electronic device which is thin and whose heat-generating components are cooled efficiently. The electronic device of the present invention is characterized by heat-transmitting sheets 72 and 47 being stuck to inside surfaces of a lower section 27 and an upper section 28 of the electronic device's case and being in contact with heat-generating components 58 and 60, which are semiconductor components such as an image processor and a central processor mounted on both sides of a motherboard 30 provided in the case, and elastic sheets 83 and 48, which are laid between the portions, contacting the heat-generating components 58 and 60, of the heat-transmitting sheets 72 and 47 and the inside surfaces of the sections 27 and 28.

Abstract: A joystick device is provided including a larger number of proportional control actuators than the prior art thereby enjoying higher operability. Joystick device includes an operation lever having a grip portion provided on a surface thereof with a slide switch substantially T-shaped in section. The slide switch has a web portion connected to an upper surface of a shaft rotatably supported at a lower portion of the operation panel. A magnet is embedded in a lower surface of the shaft. When the operator slides the slide switch, the web portion of the slide switch pivots about the shaft, while the shaft rotates to displace the magnet in accordance with pivotal movement of the web portion. A magnetic sensor detects a variation in magnetic field intensity in accordance with displacement of the magnet, whereby a voltage proportional to the amount of movement of the slide switch is outputted.

Abstract: The present invention provides a hydraulic circuit for a crane wherein a switching valve is provided between a plurality of motor circuits connected in series within the same actuator group, and at the time of simultaneous operation of the motor circuits, the switching valve is switched from a first position to a second position whereby the series connection between the motor circuits is cut off, and they are driven by each of separate hydraulic sources, thereby enabling prevention of pressure interference at the time of simultaneous operation of the motor circuits within the same actuator group without increasing hydraulic sources.

Abstract: An information processing apparatus is disclosed which is superior in usability when it is used as a portable apparatus. The information processing apparatus includes an apparatus body section having a keyboard and a display section having a display screen and supported on the apparatus body section for pivotal motion by and around a pivot shaft. An indication mark moving operation member for moving an indication mark on the display screen is disposed at an end portion of the apparatus body section in an axial direction of the pivot shaft at an end portion of the apparatus body section adjacent the pivot shaft. A control operation member for controlling an object indicated by the indication mark moved on the display screen is disposed at the other end portion of the apparatus body in the axial direction of the pivot shaft at the end portion of the apparatus body section adjacent the pivot shaft.

Abstract: A joystick device is provided including a larger number of proportional control actuators than the prior art thereby enjoying higher operability. Joystick device includes an operation lever having a grip portion provided on a surface thereof with a slide switch substantially T-shaped in section. The slide switch has a web portion connected to an upper surface of a shaft rotatably supported at a lower portion of the operation panel. A magnet is embedded in a lower surface of the shaft. When the operator slides the slide switch, the web portion of the slide switch pivots about the shaft, while the shaft rotates to displace the magnet in accordance with pivotal movement of the web portion. A magnetic sensor detects a variation in magnetic field intensity in accordance with displacement of the magnet, whereby a voltage proportional to the amount of movement of the slide switch is outputted.

Abstract: The present invention provides a hydraulic circuit for a crane wherein a switching valve is provided between a plurality of motor circuits connected in series within the same actuator group, and at the time of simultaneous operation of the motor circuits, the switching valve is switched from a first position to a second position whereby the series connection between the motor circuits is cut off, and they are driven by each of separate hydraulic sources, thereby enabling prevention of pressure interference at the time of simultaneous operation of the motor circuits within the same actuator group without increasing hydraulic sources.

Abstract: A relief valve, including a case having an inner bore, and an opening defining an outlet; a valve seat adjacent to a forward end of the case, the valve seat defining an inlet, a plunger slidably disposed within the case and pressed forward by a spring to shut off fluid communication between the inlet and the outlet, a piston slidably disposed within the case, and slidably receiving the plunger, the piston being configured for pushing forward a rear end of the spring, and which piston moves forward with the increase in the pressure at the inlet to compress the spring, thereby regulating a relief pressure, wherein the piston further comprises a first sliding portion configured for sliding with liquidtightness in the inner bore of case, and a sliding bore formed along a central axis of the piston, a rear portion of the plunger slidably inserted and fitted in the sliding bore formed along a central axis of the piston, and the plunger further comprising a through hole configured for feeding a pressurized liquid fr

Abstract: A heat fumigation apparatus for transpiring a solution of a chemical agent dissolved in a solvent by heating which comprises a container having the solution therein, a wick a part of which is immersed in the solution and a heater for heating the upper portion of the wick thereby transpiring the solution drawn up the wick. The wick is composed of an inorganic powder and/or an organic powder, a binding agent and at least one antioxidant which is substantially non-evaporative at a heating temperature.