Abstract: A conveying apparatus for an industrial robot in which a first arcuate rail is fixed to a ceiling and extends parallel to a turning locus of a robot arm suspended form a ceiling surface. A second linear rail is attached to the first rail and is rotatable therearound while maintaining an orientation normal to the first rail. A gripper mounted on a forward end portion of the robot arm is suspended by a balancer from the second rail, or alternatively by a first link having one end rotatably fixed to the ceiling and connected at its other end to one end of a second link with the gripper suspended by a wire from a balancer mounted on the other end of the second link. With this arrangement, not only is the vertical load due to objects conveyed by the robot reduced, but the horizontal load due to the same is also reduced, even in a horizontal conveying operation.

Abstract: An inexpensive, very fine wire of high-purity copper is disclosed as an alternative to the fine gold wire which is currently used in the bonding of semiconductor devices. The very fine wire of high-purity copper is prepared from a copper ingot that contains 0-2 ppm of S, 0-2 ppm of Ag, 0-1 ppm of Se and 0-1 ppm of Te as incidental impurities with the total content of these and any other incidental impurities present being held at a level not exceeding 10 ppm. By subjecting it to an appropriate heat treatment, the wire acquires an elongation of 5-22%, a breaking strength of 14-33 kg/mm.sup.2, and a Vickers hardness of 38-50, the latter value being measured with respect to said high-purity copper in an ingot form.

Abstract: A two-needle sewing machine which is switched to one-needle sewing at corners. The number of stitches at the beginning of the corner before the changing of the cloth direction is independently set from the number of stitches afterwards. Multiple corners are accommodated by multiple pairs of numerical switches.

Abstract: A method of fabricating a MOS field effect semiconductor device having an LDD structure is described in which an insulating film is formed on a gate electrode and a layer of polycrystalline silicon, oxide, high melting point metal or a silicide of a high melting point metal is formed on a wafer and etched away by unisotropic RIE, except a portion thereof on a sidewall of the gate. With the resulting structure, degradation of the transconductance of the device due to injection of hot carriers is prevented. Also, the size of the device can be minimized without unduly increasing the resistances of the drain/source region, the gate electrode, and the contacts of the device.

Abstract: A homogeneous fine grained metal film (6') on a substrate in accordance with the present invention comprises multiple metal layers and intervening layers (14) between the respective metal layers, the intervening layers being formed of a compound of the metal and a reactive gas and serving to suppress growth of grains (12') in the respective metal layers and to suppress electromigration of grain boundaries (13').In a method for manufacturing a metal film (6') having homogeneous and fine grains on a substrate in accordance with the present invention, one or more intervening layers (14) are formed by introducing a gas reactive with the metal film one or more times during deposition of the metal film, whereby intervening layers of a metal compound are interposed between the successively deposited metal layers. Thus, a metal film of a multilayered structure including multiple metal layers separated by the intervening layers is formed.

Abstract: A service estimation apparatus for an elevator adopting an estimated index with which service by the elevator can be estimated in any building and under any traffic state comprising a measurement apparatus to measure periods of service time and a microprocessor operating under program control to calculate a mean value and a variance of the periods of service time to set a reference value for designating a range of the periods of service time and to determine the estimated index, namely, an upper limit presumption value based on the mean value, the variance, and the reference value, and to determine an unachieved rate of service reference corresponding to the upper limit presumption value, the unachieved rate of service reference being a probability value at which the elevator periods of service time fall outside the range designated by the reference value.

Abstract: An optical data recording system has real time error checking by sensing the level of reflected radiation from the high energy level pulse used to form a spot on a disc, and then comparing the sensed level with a reference signal to thus sense a recording failure or defect in the disc. The sensed signal may be voltage shifted by passing through a coupling capacitance with the output discharged during an initial portion of the recording. Additionally, the reference signal may be derived from the sensed signal by passing through a second capacitive coupling circuit whose output is clamped to zero during a standby mode, the reference output being inverted and reduced by a fixed ratio to provide a proper reference voltage.

Abstract: A frame structure for a curved escalator comprises a plurality of truss units connected to each other to define an arc in plan, the frame structure having upper and lower horizontal sections and a sloped section therebetween. The frame structure further comprises an upper transition section including at least one truss unit and connected between the upper horizontal section and the sloped section, and a lower transition section including at least one truss unit and connected between the lower horizontal section and the sloped section.

Abstract: A control apparatus for a vehicular generator for use in an automobile, etc., in which the temperature of the generator is detected so as to control switching of the field current of the generator when the temperature of the generator is below a predetermined value, so that the cold output current and cold drive torque of the generator are substantially the same as the hot output current and hot drive torque of the generator.

Abstract: A permanent magnet type electric motor including a cylindrical yoke, a plurality of magnetic poles arranged peripherally on an inner surface of the yoke and an armature arranged rotatably in a region surrounded by the magnetic poles is featured by the magnetic poles each composed of a rare earth metal containing magnet, a ferrite magnet and an auxiliary magnetic pole of a high permeability material all of which are juxtaposed in the order and satisfy axial length relations of (ferrite magnet)>(auxiliary pole).gtoreq.(rare earth metal containing magnet) and (ferrite magnet)>(armature core).

Abstract: A shadow mask for a color cathode ray tube has grooves formed in the curved surface in such a manner that the bending strength within the plane having a larger radius of curvature becomes greater than the bending strength within the plane having a smaller radius of curvature, thereby increasing the effective radius of curvature of the curved surface.

Abstract: A robot hand device is provided with a collision protection coupling between a protective plate holding the hand device and a base plate mounted on the robot arm. When the hand device collides against an object in its surroundings, spring biased balls are disengaged from the recesses of a tapered pin of the protective plate by the impact of the collision so that the tapered pin comes away from a tapered hole of the base plate and the protective plate is uncoupled and suspended by a coupling chain to prevent damage.

Abstract: A system for controlling a bar cutter in a steel bar line comprising a rolling length predicting circuit for calculating, on the basis of a scale loss coefficient, a predicted rolling length of a rolling bar material conveyed to the steel bar line, a flying shear cut instructing circuit responsive to the predicted length for determining a cutting length and for operating a flying shear to cut the rolling bar material in accordance therewith, a rolling length measuring circuit for determining an actual rolling length from the cut bar material, and a scale loss coefficient determining circuit for determining the scale loss coefficient based on the actual rolling length so as to correct the predicted rolling length and thereby reduce a cutting error.

Abstract: The present invention provides a communication system which employs a signal whose carrier phase is shifted by a constant amount .DELTA..theta. per time slot in correspondence to each symbol (1 or 0) transmitted, and the phase shift is performed by .DELTA..theta./2 (or -.DELTA..theta./2) in the first 1/2 time slot and further by .DELTA..theta./2 (or -.DELTA..theta./2) in the second 1/2 time slot thereby to improve the bit error rate in multipath propagation.

Abstract: An elevator group-supervisory apparatus in which elevator group-supervisory means is fed through read means with elevator status signals, for example, hall call, cage call and direction signals derived from the display equipment of an existing elevator such as a hall call response lamp, cage call response lamp, door opening or closing button and cage position indicating lamp that are standardized irrespective of differences in the date of manufacture and the manufacturer of the existing elevator, and manipulation signals that are the processed results of the group-supervisory means are delivered to the manipulation equipment of the existing elevator so as to control the control circuit of the existing elevator.

Abstract: In a display apparatus for an elevator wherein a display unit disposed in a cage or a hall of the elevator is divided into two display regions, and as the cage approaches the hall, a lighting area in the first display region is gradually decreased, while a lighting area in the second display region is gradually increased; a display apparatus for an elevator characterized by comprising first calculation means for calculating and delivering a distance or a time interval which is required for the cage to arrive at the hall, second calculation means for calculating and delivering a movement distance or a lapsed time which is taken with respect to a designated point of time, first display control means for displaying the quantity corresponding to the output of the first calculation means, in terms of the lighting area of the first display region, and second display control means for displaying the quantity corresponding to the output of the second calculation means, in terms of the lighting area of the second disp

Abstract: An idle revolution control device includes a water temperature sensor, a filter means and a control means which is constituted with a central processing unit and an interface connecting the water temperature sensor and the central processing unit. The filter means functions to provide a time constant which provide a high response speed for a temperature variation toward a high temperature side and a low response speed for a temperature variation toward a low temperature side and to pass an output signal of the water temperature sensor with such time constant a predetermined time after an engine starts.

Abstract: A semiconductor laser device is fabricated by forming a first semiconductor layer of N type GaAs to be a current narrowing layer on a P type GaAs semiconductor substrate, forming a second semiconductor layer of P type AlGaAs on the first semiconductor layer, removing said second semiconductor layer by etching except the proximity of the portion to be the end surface of a resonator, forming a striped groove which is deep enough to penetrate the first semiconductor layer and extends to that direction which crosses the surface to be the end surface of the resonator and, depositing a lower clad layer, an active layer, an upper layer and a contact layer in this order.

Abstract: An RF field generator and detector comprising an RF coil having an inductance and at least one conductor which includes at least first and second separated parts arranged to form stray capacitance between them, capacitors for impedance matching which are connected to the RF coil, and a balanced-to-unbalanced transformer by which a balanced load composed of the RF coil and the capacitors is coupled to an unbalanced RF transmitter and receiver, the stray capacitance being adjusted thereby to equivalently reduce the inductance of the RF coil.

Abstract: A nonvolatile random access memory comprising a memory cell including a first MOS transistor having a drain connected to a bit line and a gate connected to a word line, a memory transistor having a drain connected to a source of the first MOS transistor, a control gate connected to a first control signal line and a floating gate for storing charges, and a second MOS transistor connected between a source of the memory transistor and a ground potential and connected to a second control signal line. The memory cell operates as a random access memory cell when the first control signal line is an "H" level and the second MOS transistor is turned off in response to and "L" level on the second control signal line, and operates as an EEPROM when the first control signal line is an "L" level and/or a "V.sub.p " level.