Abstract: A sinter of noble metal produced by forming in a required shape or attaching to a given object a plastic art grade clayish composition or adhesion composition comprising a noble metal powder containing at least one member selected from the group consisting of pure noble metal powders and noble metal alloy powders, 0.022-3.0 wt. % of a water-soluble cellulose type resin, 0.02-3.0 wt. % of starch, or 0-0.5 wt. % of a reticular macromolecular substance formed by condensation of a component unit having phenyl propane as a backbone as an organic type binder, and water, drying to hardness the shaped composition or adhering composition, and sintering the hardened shaped composition or adhering composition at a temperature in the range of from the melting point of the noble metal and 70° C. lower than the melting point. A method for the production of the sinter of noble metal. A sinter of noble metal and an attached sinter of noble metal.

Abstract: This invention relates to map displaying system, in which the reference altitude value determining means obtains a reference altitude value in accordance with the altitude data in the specific area, and the altitude data changing means performs the processing that each altitude both in the plane area and the solid area have the continuity from one area to another. And the 2-dimensional road data storage means stores the 2-dimensional ground road data and the 2-dimensional underground road data separately. Therefore, the 3-dimensional road data preparing means prepares the 3-dimensional ground road data in accordance with the 2-dimensioanl ground road data and the altitude data, while preparing the 3-dimensional underground road data in accordance with the 2-dimensional underground road data and the altitude data.

Abstract: In manufacturing a CVD film (interlayer insulating film or passivation film) using material gases containing a gas having Si--H combination, the amount of Si--H combination in the CVD film (12, 31, 32, 33, 34, 47, 48, 49, 57, 59) is set to 0.6.times.10.sup.21 cm.sup.-3 or less to thereby suppress the formation of electron traps in the gate oxide film or tunnel oxide film and prevent variations in the threshold of transistors. In addition, the moisture resistance can be improved by setting the refractive index of the CVD film to 1.65 or more or by setting the concentration of nitrogen in the CVD film to 3.times.10.sup.21 cm.sup.-3 or more.

Abstract: The non-volatile semiconductor device includes a sub control gate in addition to the conventional structure having a control gate and a floating gate. When writing or erasing is performed, by applying various to the control gate and the sub control gate, the potential of the floating gate which is capacitively connected to the control and sub control gates is determined. Accordingly, the floating gate voltage is maintained at lower control voltage compared to conventional one by selecting larger coupling ratio. The sub control gate covering a part where charge concentration apt to occur avoids charge concentration and deterioration of the tunnel oxide film.

Abstract: A clayish composition for producing a molded article of noble metal consists essentially of a noble metal powder, starch and a water-soluble cellulose resin as organic binder and water. The contents of the starch and the water-soluble cellulose resin each fall in the range of 0.02-3.0% by weight, based on the total amount of the organic binder and the noble metal powder. A method for producing the sintered article of noble metal consists essentially of a step for producing the clayish composition mentioned above, a step of molding the clayish composition in a desired shape, a step of drying the molded article and a step of sintering the dried molded article.

Abstract: The structure of the invention employs a lamination type memory cell and a lamination type select transistor having a floating gate. Since no contact holes are formed in a first polysilicon film of a high resistance, it is not necessary to form a contact hole in the gate wire of the select transistor between a cell array. A floating gate is beforehand charged with electricity so that the select transistor cab have a positive threshold value. Alternatively, an impurity is introduced into the channel region of the select transistor so that the neutral threshold voltage of the transistor after radiation of ultraviolet rays can have a positive value.

Abstract: A memory cell is formed in the main surface area of a semiconductor substrate. An inter-level insulation film is formed on the substrate to cover the memory cell. An opening is formed in the inter-level insulation film to reach the memory cell. An internal wiring layer is electrically connected to the memory cell via the opening. A protection film is formed on the inter-level insulation film to cover the internal wiring layer. The protection film is formed of a material containing at least silicon and oxygen and the refractive index thereof is set within a range of 1.48 to 1.65.

Abstract: The present invention provides a method of manufacturing a nonvolatile semiconductor memory device comprising a floating gate, a control gate, source and drain regions, and a wiring layer connected to the source or drain region. An insulation film having a flat surface is formed to fill the contact hole for the source or drain region, and an insulation film containing phosphorus is formed on the insulation film. The particular construction permits the insulation film to be uniform in thickness so as to improve the charge retaining capability of the floating gate.

Abstract: A fluid-filled elastic cushioning device for elastically connecting a first and a second member, including an inner sleeve attached to the first member, an elastic body fitted on the inner sleeve and having two pockets which are open in opposite axial end faces of the elastic body, two closure members for closing the open ends of the pockets to thereby form two fluid chambers, an orifice member embedded in the elastic body and having an orifice communicating with the fluid chambers, and a mounting plate secured to the orifice member. At least one of opposite ends of the orifice is open at a bottom of the corresponding at least one of the pockets, and at least one stopper rubber block is secured to each of at least one of the closure members which closes the corresponding at least one of the pockets. Each rubber block extends into the corresponding one of the fluid chambers such that a free end of each rubber block is normally spaced apart from the corresponding open end of the orifice.

Abstract: An air suspension system which includes an air spring provided between a car body and a suspension arm for adjusting the car height by changing the volume of the air spring. The air spring includes a diaphragm and an air piston formed to contact with the diaphragm. The air piston has a plurality of wall portions arranged longitudinally. Each wall portion is different in its external shape from the portion adjacent thereto. The external shapes of the air piston includes a combination of at least two shapes of the group including a straight cylindrical shape, a tapered shape converging downward and a tapered shape diverging downward.

Abstract: A method of adjusting the height of a vehicle provided with an air suspension system capable of adjusting the vehicle height and having two air chambers capable of being communicated with and shut off from each other. The method comprises the steps of shutting off temporarily one air chamber from the remaining one and supplying the compressed air to the other air chamber when the vehicle height is to be increased. The supply of the compressed air is carried out at the same time as or prior to the shutting-off.

Abstract: An air suspension comprises a shock absorber having a piston rod in which is disposed a control rod for adjusting a damping force, an air spring having a main air chamber and an auxiliary air chamber, a valve body for affording and shutting off communication between both air chambers to adjust the spring constant of the air spring, a support having a rigid member to which the piston rod is fixed and in which the valve body is disposed and connected to a car body and an actuator provided above the support to adjust at the same time the damping force of the shock absorber and the spring constant of the air spring. The actuator is provided with an electric motor, a gear fixed to the motor and a pair of rods arranged parallel to each other and extended toward the rigid member of the support, one rod being coupled with the control rod and the other being coupled with the valve body. The pair of rods are coupled respectively with a pair of tubes supported rotatably by a bracket through pins.

Abstract: In an ultrasonic flow meter for measuring the flow rate of a fluid flowing through a pipe by determining the frequency difference between ultrasonic waves traveling within the fluid in the direction of flow of the fluid and in a direction opposite thereto, respectively. Each of the ultrasonic transmitters and receivers is connected to the pipe through an individual guide rod having disposed on its outer surface ridges which are adapted to cause ultrasonic waves reflected from the ridged surface to conceal one another out, and a thin gold sheet interposed between the guide rod and the pipe.