Abstract: Photocurrents outputted by photo detecting circuits (1.sub.1 to 1.sub.n) disposed in first current paths (2.sub.1 to 2.sub.n) are amplified by current amplifying means (3.sub.1 to 3.sub.n) disposed in the first current paths (2.sub.1 to 2.sub.n), respectively. The output currents from the plurality of current amplifying means (3.sub.1 to 3.sub.n) are converted into voltage all by one current-voltage converting means (5). The current amplifying means (3.sub.1 to 3.sub.n) are turned on or off by control signals (3.sub.1S to 3.sub.nS), and therefore the luminance detecting circuit amplifies the current of the required photo detecting element only, and outputs into the current-voltage converting means (5).

Abstract: The object of the present invention is to provide a semiconductor integrated circuit device wherein the input signal is made to have a low amplitude to shorten transition time of the input signal, said integrated circuit device operating at a low power consumption, without flowing of breakthrough current, despite entry of the input signal featuring low-amplitude operations, and said integrated circuit device comprising a gate circuit, memory and processor.

Abstract: A current-voltage conversion circuit which is capable of performing logarithmic compression is obtained using only CMOS processes. An emitter of a PNP transistor (10) and a current input terminal (51) are connected commonly to a reverse input terminal of an operational amplifier (53), while a first reference voltage input terminal is connected to a non-reverse input terminal of the operational amplifier (53). A collector of the PNP transistor (10) is grounded and a base of the PNP transistor (10) is connected to an output terminal of the operational amplifier (53) and an output terminal (55). A current (I) is supplied to the current input terminal (51) while a first reference voltage (V.sub.REF1) is applied to the first reference voltage input terminal. The PNP transistor (10) is formed by CMOS processes. The current-voltage conversion circuit is manufactured in a shorter manufacturing time and at a reduced cost.

Abstract: In an exposure light source for use in exposing a pattern onto a substrate, an exposure lamp substantially encloses only a single isotope of a specific metal. The single isotope emits far ultraviolet light which has a very narrow bandwidth when vaporized and excited in the exposure lamp. Preferably, the single isotope may have a nuclear spin equal to zero and is effective to make the bandwidth of the far ultraviolet light narrower. The single isotope may be determined in consideration of an abundance ratio of each isotope. The specific metal may be selected from a group consisting of mercury, lead, zinc, and cadmium.

Abstract: A laser beam harmonics generator comprises a laser beam source for emitting a laser beam, a harmonics generator for generating harmonics of the laser beam in response to the irradiation of the laser beam, and a displacement unit for relatively displacing the harmonics generator and the laser beam substantially perpendicular to a light path of the laser beam.

Abstract: A magnetic core for a signal line filter adapted to be assembled in a terminal connector for a signal line cable for connecting electronic devices to form a signal line filter, wherein the magnetic core is provided with pin insertion holes each having a tapered portion in the direction of thickness of the magnetic core, or tapered portions at both sides in the direction of thickness of the magnetic core.

Abstract: To improve traveling stability, riding comfort, high-speed durability, etc., the uniformity in the main belt of a belted tire is improved by dividing an auxiliary layer into at least three areas in an axial direction of the tire, and both ends of the three divided auxiliary layers are bonded in the divided areas at different bonding positions, respectively, in circumferentially spaced relationship to each other. In particular, lateral force variation of the tire is reduced and separation trouble at the auxiliary layer bonding area can be settled.

Abstract: A pneumatic radial tire for passenger car having an improved riding comfort against vibration without substantially degrading the cornering stability is disclosed, which comprises a bead filler disposed between the carcass and its turnup, at least a part of which has a complex modulus of elasticity of 1.times.10.sup.8 .about.8.times.10.sup.8 dyn/cm.sup.2 and a sin .delta. of not less than 0.28 under a strain energy of 10.sup.4 dyn/cm.sup.2.

Abstract: A pulse width modulation circuit which can cancel the mean error of pulse width modulation with respect to time due to the offset voltage of a triangular wave signal and to the offset voltage of a comparator, by adding simple circuits to an existing pulse width modulation circuit. The invention relates also to an integration circuit of the product of two analog signals using the pulse width modulation circuit described above.The principle of the present invention combines a circuit for cancelling the offset of a triangular wave signal by inverting either the triangular wave signal with respect to an input signal or the input signal with respect to the triangular wave signal, in every predetermined period, with a circuit for eliminating the offset of a comparator by inverting the output of the comparator and replacing the input terminals of the comparator if the input signal is not inverted, or connecting the input terminal of the comparator as such if the input signal is inverted.

Abstract: A pair of pumps deliver pressurized fluid to a steering control valve assembly controlling the operation of a steering cylinder. The steering control valve assembly diverts any excess of the incoming pressurized fluid to a hoist control valve assembly controlling the operation of a pair of implement hoist cylinders. The hoist control valve assembly also diverts any excess of the incoming fluid away from the hoist cylinder pair, this time to a retarder or brake system for cooling same. The retarder receives additional cooling fluid from a hydraulic torque converter, to which the fluid has been forced from another pump. On leaving the retarder the pressurized fluid is cooled and then delivered to a transmission lubricating circuit.

Abstract: An apparatus for coupling a tractor, a dump trailer and a dump truck wherein the dump trailer is adapted to be selectively towed by the tractor or by the dump truck. A draw bar having a trunnion and a hole at the leading end portion is pivotally mounted on the dump trailer. The trunnion is adapted to be engaged with a gripper mounted on an arm member of the tractor so as to enable the dump trailer to be towed by the tractor. The hole of the draw bar is adapted to be engageable with a coupler pivotally mounted on a rear axle of the dump truck thereby allowing the dump trailer to be drawn by the dump truck.

Abstract: A tone arm assembly for record players has first and second electro-magnetic motors operable for swinging a tone arm in vertical and horizontal directions, respectively, in respect to a record disc on a turntable, and a control circuit for controlling the first and second motors in such a manner that the tone arm is moved from a raised inoperative position to a lowered playing position, or from the lowered playing position to the raised inoperative position in response to control signals.

Abstract: An excavating and loading machine mounted on a wheeled type vehicle comprising front and rear frames having wheels rotatably mounted thereon, said front and rear frames being adapted to rotate relative to each other, and a vehicle body having an implement for effecting excavation and loading operations which is rotatably mounted on either of said front and rear frames.A pair of hydraulically operated cylinders are provided between said front and rear frames for controlling steering of the vehicle.

Abstract: A phonograph record turntable assembly comprises a rotatable turntable having a rubber or other elastically flexible sheet overlying a substantial portion of its upper surface and secured thereto at least along an edge or edges of the sheet for defining at least one sealed interior space which contains a fluid material, preferably in the form of a viscous liquid, so as to provide a cushioned, vibration-damping record supporting surface which conforms to the shape of a warped or otherwise distorted phonograph record placed thereon. In order to avoid the accumulation of the liquid at any one portion of the interior space when the turntable is not horizontally disposed, such interior space may be divided into a plurality of liquid-containing compartments which are isolated from each other, as by partitions therebetween, and/or each interior space or compartment may further contain absorbent material which takes up the viscous liquid.

Abstract: A safety device for hydraulically driven vehicles including a hydraulic motor for driving the vehicles, a variable displacement pump for supplying fluid to said motor, a servo control mechanism for controlling displacement of said variable displacement pump, an additional pump for supplying fluid to said servo-control mechanism, and a servo valve provided between said additional pump and said servo control mechanism for selectively communicating said servo control mechanism with said additional pump.Movement of the vehicle is prevented when an engine for driving the pumps is running while a shift control lever is either at forward movement position or backward movement position.

Abstract: For automatically terminating the operation of the vibrator in a self-propelled roller compactor when the vehicle is at rest or travelling slowly, a variable displacement pump driving the hydraulic motor of the vibrator is provided with a servo control mechanism including a spring-neutralized linear actuator capable of adjustably varying the per-cycle displacement of the pump by receiving hydraulic fluid pressure from another pump. Provided between the servo control mechanism and the said other pump is an on-off valve which is closed when the vehicle speed becomes less than a predetermined value, with the result that the actuator is neutralized to zero the displacement of the variable displacement pump. The on-off valve can be operated from an operator controlled shift lever, so as to be closed when the lever is in or adjacent a neutral position.

Abstract: A gas shielding method for a fuel exchange pool in which, in order to shield radioactive gas generated in said fuel exchange pool by forming a gas curtain flowing in one direction above the fuel pool, both a ratio between a blown-out quantity and a sucked quantity of the gas flow and a temperature difference between the gas and the water in the fuel pool are suitably selected.

Abstract: A magnetoresistive element comprising a substrate, a first conducting ferromagnetic film strip having current carrying ability predominantly in one direction, a second current carrying ferromagnetic metal film strip on said substrate having a current carrying ability predominantly in a direction substantially perpendicular to said one direction, said first film strip being spaced from said second film strip by a distance equal to one-half the wave length or multiple thereof of the alternating magnetic field in the magnetoresistive element. The strips are serially connected together and a current input terminal is connected to the opposed end of said strips and an output terminal is connected to the junction between said strips.Further embodiments of the invention are disclosed in which one film strip is separated from another by a distance equal to a quarter wave length or odd multiple thereof of the alternating magnetic field in the magnetoresistive element.