Abstract: An improved structure of a mechanical seal for keeping a gas chamber and a reference gas chamber airtight in a sensor body. A packing seal is disposed between a shoulder formed on an inner wall of a housing of the sensor body and a tapered surface of an insulation porcelain installed in the housing to define the gas chamber and the reference gas chamber hermetically. The packing ring is formed by a metal plate which has a thickness of 0.1 mm or more and a Vickers hardness of 200 or more and which is made of at least one of a nickel, a nickel alloy, a titanium, and a stainless steel.

Abstract: An easy-to-manufacture structure of a ceramic heater having a high durability and a manufacturing method thereof are provided. The ceramic heater may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.

Abstract: A ceramic heater that may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.

Abstract: A ceramic heater that may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.

Abstract: A metallic layer is provided on the surface of a ceramic body. A junction layer is provided on the metallic layer. The junction layer contains 40.about.98 wt % Cu and 2.about.20 wt % Ni. A conductive member is bonded to the metallic layer via the junction layer.

Abstract: A metallic layer is provided on the surface of a ceramic body. A junction layer is provided on the metallic layer. The junction layer contains 40.about.98 wt % Cu and 2.about.20 wt % Ni. A conductive member is bonded to the metallic layer via the junction layer.

Abstract: The engine balancer unit includes a first oil pan attaching to the bottom of an engine cylinder block, a second oil pan attaching to the first oil pan to close a bottom of the first oil pan, and a unitary case inserted in the first oil pan to support counterbalance shafts with balance weights. The cylinder block does not need to be modified to install the engine balancer unit because the first oil pan which encloses the unitary case is attached under the cylinder block. Further, fluid tightness between the first oil pan block is not spoiled by the unitary case because the unitary case is provided inside the first oil pan. Furthermore, fluid tightness between the first oil pan and the second oil pan is not spoiled by conventional fastening structure.

Abstract: Several heater patterns are printed on a ceramic green sheet for substrates, and the ceramic green sheet is laminated with a ceramic green sheet for cover plates, thereby forming a lamination body. Then, the lamination body is cut so that it is divided into several intermediate bodies, each of which holds a corresponding one of the heater patterns therein and has a side surface on which a terminal portion of the heater pattern is exposed. Then, the intermediate body is baked. As a result, a ceramic heater composed of a heater substrate holding the heater pattern and a cover plate disposed on the heater substrate to cover the heater pattern can be provided without any micro-cracks therein.

Abstract: An oxygen sensor element has a cup-type solid electrolyte body defining an air chamber therein, and a plate-like lamination-type ceramic heater is disposed in the air chamber with a front end portion contacting the bottom portion of the air chamber. Accordingly, the lamination type ceramic heater is prevented form being swung and hit against the electrolyte body.

Abstract: A process for production of inositol comprising the steps of (1) culturing a microorganism capable of extracellularly secreting inositol and belonging to the genus Candida in a medium so as to extracellularly accumulate inositol in the medium; and optionally (2) recovering inositol from the culture. Preferably, the producer microorganism is resistant to an antibiotic such as cerulenine or D-cycloserine, or resistant to a glucose metabolism antagonist such as 2-deoxyglucose.

Abstract: A sunlight sensor for use in control of vehicle air conditioners, and provides which detects the sunlight thermal load. A light-cutoff film is formed on the upper surface of the transparent substrate (intermediate element) of the light-sensing element, and at the center of this light-cutoff film is formed a light-guiding hole. Left and right light-detection sections and are formed on the lower surface of the transparent substrate.

Abstract: A position detection element 4 is formed by sequentially depositing an X-axis resistor film 5, a photoconductive film 6 and a Y-axis resistor film 7 on one surface of a glass substrate 2 which is a transparent member. Further, a light screening film 3 is formed on the other surface of the glass substrate 2. At that time, a pin hole 31 through which light is transmitted is formed at a central portion of the light screening film 3. Where the position detection element 4 and the light screening film 3 are formed integrally with and on the glass substrate 2, mounting of the glass substrate 2 on a casing of a sensor enables the position detection element 4 and the light screening film 3 to be mounted on the casing of the sensor, thus improving the mounting property of the light position detection element 4 and the light screening film 3 on the casing.

Abstract: An insolation sensor for detecting a substantial insolation direction from the sun including a light shading film an aperture defined therein and provided on one of the surfaces of a glass substrate. A position detection element having a photoelectric conversion film made of a semiconductor is formed on the other surface. The rays of light from the sun are incident as a spot beam H onto the position detection element through the aperture. The position detection element detects a center of the intensity of photocurrent at the beam receiving portion. Therefore, even when the intensity of each of the direct rays and scattered rays from the sun change on the ground depending on the weather conditions, the center position of the distribution of the insolation intensity can be detected in accordance with the weather conditions, and a substantial insolation direction can be detected.

Abstract: The present invention pertains to a method for producing a mixture including an injected engine fuel from an injector, a combustion engine intake-air and an evaporative gas from the engine fuel. The method includes the steps of measuring a characteristic of the evaporative gas and changing step for changing a mixing ratio of the evaporative gas to at least one of the injected engine fuel and the combustion engine intake-air, according to the measured characteristic of the evaporative gas, by changing a flow rate of the combustion engine intake-air.

Abstract: A supercharged diesel engine is comprised an intake pipe, a diesel engine which is including an air cleaner and a cylinder which are installed both end of the intake pipe, respectively, a supercharger provided in the intake pipe and set to be driven by the diesel engine via clutch device, a bypass passage which is installed in the intake pipe in parallel with the supercharger, a bypass valve and a throttle device which are arranged on the bypass passage in series and the supercharger being supplied air in the case of that the bypass valve is opened and being rotated by the air.

Abstract: Microorganisms belonging to the genus Providencia or the genus Escherichia and having a resistance to isoleucine antagonist, produce L-threonine by fermentation in higher yield and in more amount of L-threonine accumulated.

Abstract: Disclosed is a vibratory sieve for separation of fibrous materials from materials containing them, the vibratory sieve comprising a sieve body and a mechanism for imparting vibration to the sieve, the sieve body including a screen to be vibrated by the mechanism, the sieve being adapted to convey a mixture of water and the materials containing the fibrous materials onto the screen through meshes of which finer particles and water are passed by the vibration of the screen, leaving the fibrous materials on the screen, the sieve being characterized in that the sieve is provided with an annular member which is movable on the screen surface by the vibration of the screen and whose movement is confined by an inlet member in such a way that the mixture of water and the materials containing the fibrous materials is placed inside the annular member.

Abstract: A turbocharger for supercharging an engine provided with an intake pipe and an exhaust pipe including a main pipe and a branched pipe disposed in parallel thereto includes a compressor rotor disposed in the intake pipe, a first turbine rotor disposed in the main pipe so as to be rotated by the pressure of the exhaust fluid therein and connected to the compressor rotor for the rotation thereof, a second turbine rotor disposed in the branched pipe so as to be rotated by the pressure of the exhaust fluid therein, a coupling device for establishing the connection between the first and second turbine rotors when the either of the turbine rotors is brought into rotation at a speed above a set value, a valve disposed between the main pipe and the branched pipe and being normally closed for interrupting the fluid communication therebetween, a sensor for detecting the rotational speed of the first or the second turbine rotor and a control device for opening the valve based on a signal from the sensor when the detected

Abstract: A centrifugal supercharger includes a housing, an input shaft rotatably supported on the housing, a pulley related with one end of the input shaft, an output shaft rotatably supported on the housing, a compressor rotor fixed to one end of the output shaft, a cover located around the compressor rotor, and fixed to the housing, and forming a supercharging passage, an rotating speed step-up device connecting between other end of the input shaft and other end of the output shaft, an oil-supplying device integrated with the step-up device, and a distributing device faced with the oil-supplying device, and formed on the housing.

Abstract: A throw away tip used for back-turning in which the throw away tip cuts deeply into work material in one direction in depth setting and machines in a different direction from the that of the depth setting has at least an end cutting flank for cutting into work material as depth setting. One or more than one middle cutting flanks are connected with the end cutting flank on the feed-direction side of the side cutting flank. The rake surface is provided with first and second chip breakers grooved along the end cutting flank and the middle cutting flank, respectively. A rake face is connected with the above flanks. The end cutting flank has an acute end cutting edge angle. The middle cutting flank has a cutting edge angle wider than the end cutting edge angle and narrower than a right angle. The side cutting flank has a setting angle which is wider than the entering angle.