Abstract: A light control sheet capable of scattering an incident light of particular incident angle is produced by a method composed of preparing a film of a composition containing at least two photopolymerizable components having different refractive indexes, irradiating on the film a light from a particular direction, and obtaining a cured film of the light control sheet product. Such other light control sheets as capable of scattering a plurality of incident lights each of particular incident angle are obtained by modification of the above-mentioned method.

Abstract: Disclosed are a papermaking method comprising the steps of sheet-formation of an aqueous papermaking stock which contains a cellulose fiber or the said fiber and an inorganic filler, dewatering and drying, characterized by the addition of a starch ether derivative of a general formula (I): ##STR1## where St-O represents a starch molecule residue, R.sub.1, R.sub.2 and R.sub.3 independently represent an alkyl group having from 1 to 18 carbon atoms or a benzyl group, provided that two or more of these R.sub.1, R.sub.2 and R.sub.3 must not be a benzyl group or an alkyl group having from 5 to 18 carbon atoms at the same time, and any two of these R.sub.1, R.sub.2 and R.sub.3 may be bonded to form a cyclic structure, the said derivative containing the ether bond preferably in a degree of substitution of from 0.01 to 0.1, to the said papermaking stock in an amount of from 0.05 to 5.

Abstract: A workpiece lifting apparatus for carrying workpieces into and out of a die in a press machine. A work support portion of the lifting apparatus comprises vacuum cups which reduce impacts caused when the workpiece is set in and detached from the die so as to prevent deformations of the workpiece and to stabilize the setting position of the same.

Abstract: A hydraulic damper includes a cylinder containing hydraulic fluid therein, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers, a piston rod connected to the piston and extending through one of the liquid chambers to project to the outside of the cylinder, and disc valves provided on opposite sides of the piston for generating damping force both in the extension and contraction strokes of the damper. A liquid passage is formed in the piston rod to communicate the two liquid chambers separately from the disc valves. An adjusting member is provided in the liquid passage and is displaceable between three or more adjusting positions for changing the effective area thereof. A digital encoder connected to the adjusting member for detecting the adjusting positions. The digital encoder includes a common electric line which ON-OFF controls at least two other electric lines when the other two lines generate the same digital signals.

Abstract: A novel digitized measuring system is disclosed for the measurement of the DC parameters of a wide variety of electrical and electronic devices. A stimulus measuring unit (SMU) is disclosed which can alternatively act as a voltage source and current monitor or as a current source and voltage monitor. A device under test (DUT) can be characterized without changing external connections and the resulting data can be manipulated and displayed in a wide variety of graphical or tabular forms.

Abstract: A novel digitized measuring system is disclosed for the measurement of the DC parameters of a wide variety of electrical and electronic devices. A stimulus measuring unit (SMU) is disclosed which can alternatively act as a voltage source and current monitor or as a current source and voltage monitor. A device under test (DUT) can be characterized without changing external connections and the resulting data can be manipulated and displayed in a wide variety of graphical or tabular forms.

Abstract: A vehicle leveling system is disclosed having an air compressor adapted to issue pressurized air, a tank communicated with the compressor through an electromagnetically operated valve, and a suspension disposed between a chassis and a vehicle axle and having an air chamber to which the tank and the compressor supply the pressurized air through an electromagnetically operated valve.

Abstract: A vehicle height adjusting device includes an air compressor, an air tank storing pressurized air produced in the air compressor, a dehumidifying device provided between the air compressor and the air tank, and an elevating device for elevating or descending the height of a vehicle and receiving pressurized air from the air tank or from the air compressor in elevating the height of the vehicle and exhausting pressurized air therefrom through the dehumidifying device to atmosphere in descending the height of the vehicle. There are provided a pressure detector detecting the pressure in the air tank, a height detector detecting the height of the vehicle, and a controlling circuit connected to the pressure detector and the height detector for controlling the operation of the elevating device in accordance with the output signal of the height detector and that of the air compressor in accordance with the output signals of the pressure detector and the height detector.

Abstract: A vehicle height detecting device including a casing mounted on a body of a vehicle, a rotatable member rotatably disposed in the casing, a link arm connected with the rotatable member and with a member associated with a road wheel of the vehicle, and a detector provided in the casing for detecting the angular position of the rotatable member with respect to the casing. A retaining device is provided in the casing and is selectively engageable with the rotatable member at a predetermined angular position thereof.

Abstract: A process and apparatus for recycling iron material components of dusts discharged from iron manufacturing furnaces such as blast furnaces and converters and removing zinc type metals and compounds from such dusts to avoid their deposition and accumulation on the furnace walls. A welt method is employed for separating the iron dust components from the zinc and removing these zinc type metals and compounds. The zinc material is made identifiable or "earmarked" from the iron material by being selectively ground or otherwise reduced to finer particles than the iron material, the zinc material then being removed from the iron material by wet separation under negative pressures for reclamation or disposal. The iron material remaining is processed for recycling into the furnace.