Abstract: A nitride semiconductor substrate includes: a heat-resistant support substrate having a core including nitride ceramic enclosed in an encapsulating layer; a planarization layer provided on the heat-resistant support substrate; a silicon single crystal layer having a carbon concentration of 1×1017 atoms/cm3 or higher provided on the planarization layer; a carbonized layer containing silicon carbide as a main component and having a thickness of 4 to 2000 nm provided on the silicon single crystal layer; and a nitride semiconductor layer provided on the carbonized layer. This provides a high-quality nitride semiconductor substrate (a nitride semiconductor substrate particularly suitable for GaN-based high mobility transistors (HEMT) for high-frequency switches, power amplifiers, and power switching devices); and a method for producing the same.

Abstract: The present invention relates to a method for producing a group III compound substrate, including: a base substrate forming step for forming a group III nitride base substrate by a vapor phase synthesis method; a seed substrate forming step for forming a seed substrate on the base substrate; and a group III compound crystal forming step for forming a group III compound crystal on the seed substrate by a hydride vapor phase epitaxy method. The group III compound substrate of the present invention is produced by the method for producing a group III compound substrate of the present invention. According to the present invention, a large-sized and high-quality group III compound substrate can be obtained at a low cost while taking advantage of the high film formation rate characteristic of the hydride vapor phase epitaxy method.

Abstract: A sewing machine includes a needle, a needle bar which supports the needle, an upper feeding foot operable to feed the workpiece interlockingly with an up and down movement of the needle bar, a presser foot operable to press the workpiece, a holding bar which supports the presser foot, an actuator including an operating member operable to be changed to a first state, a second state or a no-load state, and a connecting portion which couples the operating member and the holding bar. The holding bar is constantly biased downward by a biasing force. The actuator moves the presser foot up against the first biasing force when the operating member is in the first state, and moves the presser foot down when the operating member is in the second state.

Abstract: A wave activated power generation device includes a cylindrical floating body anchored on water and extending vertically to a water surface, a ballast provided at a lower end portion of the floating body, and a power generating equipment provided at an upper end portion of the floating body. The floating body includes a buoyancy control chamber allowing the floating body to vertically float in the water and adjusting a position of the floating body relative to the water surface to a predetermined height in accordance with a relation between buoyancy of the floating body and weight of the ballast, and an air chamber formed between the buoyancy control chamber and the power generating equipment. The power generating equipment includes an air turbine provided above the air chamber and driven by air flow generated between an inside and outside of the air chamber by vertical motion of the water surface, and a generator rotationally driven by the air turbine.

Abstract: A wave activated power generation device includes a cylindrical floating body anchored on water and extending vertically to a water surface. a ba last provided at a lower end portion of the floating body and a power generating equipment provided at an upper end portion of the floating body The floating body includes a buoyancy control chamber allowing the floating body to vertically float in the water and adjusting a position of the floating body relative to the water surface to a predetermined height in accordance with a relation between buoyancy of the floating body and weight of the ballast, ad an air chamber formed between the buoyancy control chamber and the power generating equipment. The power generating equipment includes an air turbine provided above the air chamber and driven by air flow generated between a inside and outside of the air chamber by vertical motion of the water surface, ad a generator rotationally driven by the air turbine.

Abstract: A sewing machine includes a needle, a needle bar which supports the needle, an upper feeding foot operable to feed the workpiece interlockingly with an up and down movement of the needle bar, a presser foot operable to press the workpiece, a holding bar which supports the presser foot, an actuator including an operating member operable to be changed to a first state, a second state or a no-load state, and a connecting portion which couples the operating member and the holding bar. The holding bar is constantly biased downward by a biasing force. The actuator moves the presser foot up against the first biasing force when the operating member is in the first state, and moves the presser foot down when the operating member is in the second state.

Abstract: In a electronic control unit, a computer is operable based on a first power supply voltage output from a power supply circuit. The computer executes a fault diagnostic task. As the fault diagnostic task, the computer controls a timer circuit to change the level of a second activate signal between an inactive level and an active level during an active level of a first activate signal. The computer monitors a level of a monitor signal output from the timer circuit to determine whether the level of the second activate signal is turned depending on the change of the second activate signal by the timer circuit based on the monitored level of the monitor signal.

Abstract: In a electronic control unit, a computer is operable based on a first power supply voltage output from a power supply circuit. The computer executes a fault diagnostic task. As the fault diagnostic task, the computer controls a timer circuit to change the level of a second activate signal between an inactive level and an active level during an active level of a first activate signal. The computer monitors a level of a monitor signal output from the timer circuit to determine whether the level of the second activate signal is turned depending on the change of the second activate signal by the timer circuit based on the monitored level of the monitor signal.

Abstract: A housing for enclosing an electronic control unit is constructed of a resinous cover and a metallic case having heat conductivity higher than that of the resinous cover. An air intake module is mounted on an engine inside an engine compartment. The air intake module forms an air passage through which air flows from an air inlet toward the engine. The electronic control unit is mounted on the air intake module such that the metallic case is exposed to the air passage in the air intake module and the resinous cover is exposed to the outside of the air intake module, that is, exposed in the engine compartment.

Abstract: Laser beam radiating means has a center electrode at an inner periphery of an annular electrode. Center electrode potential control means controls potential of the center electrode so as to keep zero (0) or positive constant voltage, so that it is possible to absorb charged particles in plasma generating by radiation of laser beam through the center electrode, and dispersion of plasma can be restricted thereby. Even if a large volume of plasma is generated, a line of electric force from the annular electrode is not disturbed by plasma, and the variation of capacitance generating between the annular electrode and a workpiece can be prevented, thereby.

Abstract: A housing for enclosing an electronic control unit is constructed of a resinous cover and a metallic case having heat conductivity higher than that of the resinous cover. An air intake module is mounted on an engine inside an engine compartment. The air intake module forms an air passage through which air flows from an air inlet toward the engine. The electronic control unit is mounted on the air intake module such that the metallic case is exposed to the air passage in the air intake module and the resinous cover is exposed to the outside of the air intake module, that is, exposed in the engine compartment.

Abstract: A control section (3) outputs control information necessary for generating processing of despreading codes, address information necessary for reading-out processing of despreading codes, and timing information; a original code generating section (1) generates despreading codes, based on the control information; and a code accumulation section (2) stores the despreading codes for each address corresponding to the delay time of the multi-paths. And, a code reading-out section (4) receives despreading codes, which have been read out based on the address information, corresponding to each path, and outputs the received despreading-codes based on the timing information; a demodulating section (5) separately demodulates received signals, using despreading codes corresponding to each path; and a symbol combining section (6) combines all the demodulated signals.

Abstract: A color image system for adjusting colors of inputted images includes a color adjusting unit and color display unit. The color display unit simultaneously displays the original image, the adjusted image, and color information for both the original image and adjusted image. A color adjustment matrix is created by the color adjusting unit based upon color directions inputted to the color display unit with respect to the color information of the original color image. The color adjustment matrix is used to directly adjust the original image without converting the image to a second color space.

Abstract: An air cleaning apparatus for vehicles includes an ozone generator, diffusing plate, and activated charcoal filter, which are disposed sequentially from the upstream side of air flow in an air cleaning duct. The activated charcoal filter contains acid treated activated charcoal and alkali treated activated charcoal. Thus, in the air cleaning apparatus for vehicles, the ozone generator oxidizes ammonia and acetaldehyde and then absorbs and removes the products by acid activated charcoal and alkali activated charcoal. As a result, ammonia, acetaldehyde and acetic acid which are bad odor components of cigarette smoke can be removed sufficiently and effectively.

Abstract: A color image system for adjusting colors of inputted images includes a color adjusting unit and color display unit. The color display unit simultaneously displays the original image, the adjusted image, and color information for both the original image and adjusted image. A color adjustment matrix is created by the color adjusting unit based upon color directions inputted to the color display unit with respect to the color information of the original color image. The color adjustment matrix is used to directly adjust the original image without converting the image to a second color space.

Abstract: A method and apparatus is provided for controlling the automatic opening and closing of a window of the driver's cab of a working vehicle in which the automatic opening and closing operations and locking operation of the window are carried out smoothly by detecting the opening and closing stop positions of the window and the operation stop positions of the locking units without fail and with high safety.

Abstract: A method of automatically controlling the opening and closing of the window of the driver's cab of a working vehicle, and an apparatus for practicing the same method, are capable of carrying out the opening and closing of such a window smoothly and the shutting of such a window reliably, and have a high operability and a high safety. To obtain such effects, the apparatus is provided with a window (14) movable along guide rails (20L, 20R, 22L, 22R) extending between a window frame (16) and a top wall (18), a driving cable (28) for moving the window (14) vertically by operating a driving means (34), locking units (29L, 29R) adapted to press the window (14) against the window frame (16) of the driver's cab (12) and shut the same, and a controller (50) for controlling these operations.

Abstract: An engine of a construction vehicle is controlled by a system which includes an engine control operation transmitting mechanism having a loose spring means and connecting a fuel control lever and a governor control lever; a decelerator cylinder accommodating a piston therein and having a spring for biasing always the piston on the opposite side of a pressure chamber defined thereby and on the side of the spring a piston rod connected through a york having an elongated hole formed therein to said transmitting mechanism; a solenoid valve adapted to supply the fluid under pressure delivered by a hydraulic pump driven by the engine for exclusive use in control of the system into the pressure chamber of the decelerator cylinder, and cut off the fluid supply; and an electric circuit for controlling the solenoid valve.

Abstract: A number of embodiments of trimming devices for marine propulsion units wherein there is provided an arrangement for improving the contact area between the thrust member and the outboard drive member and wherein sliding movement is minimized through pivotal support of one of the bearing elements. In some embodiments, the bearing elements have cooperating complementary curved surfaces and, in other embodiments, one surface is curved and the other is not. An improved arrangement is also disclosed for facilitating replacement of worn elements.

Abstract: A crawler vehicle undercarriage which comprises a first cylindrical track frame pivotally mounted to a vehicle frame and a second cylindrical track frame telescopically received within the first track frame. An idler is pivotally and rotatably mounted through a cushion pad to a forward end of the second track frame while a drive sprocket is mounted to a drive shaft. A track chain encompasses the idler and the drive sprocket and is in driven engagement with the drive sprocket. A recoil spring is interposed between the first and second track frames for urging the idler away from the sprocket to maintain track tension. First and second crank members are pivotally mounted to the first track frame with a common pivot axis. A bogie is pivotally mounted to the respective crank members and a pair of track rollers are pivotally mounted to each bogie, the track rollers engaging the track chain.