Abstract: Provided is a guide device for a guide rail-type vehicle which travels while being guided along a travel track. The guide device is provided with: guide wheels which include main guide wheels and branched guide wheels, the main and branched guide wheels being in contact with and roll on guide rails arranged on both sides of the travel track; steering arms which steer the vehicle; and elastic support members which each includes one end affixed to each of the steering arms and which each includes the other end including guide wheels rotatably supported thereon, the elastic support members absorbing an impact load by deflecting about the one end thereof.

Abstract: Provided is a guide device for a rail-guided vehicle that is guided to travel along a travel track, the guide device including: guide wheels that roll in contact with guide rails arranged on both sides of the travel track; steering arms that steer the vehicle; guide wheel support members; and shock-absorbing members. One end of each guide wheel support member is supported at the tip end of a steering arm with shock-absorbing members interposed therebetween, and the other end of each guide wheel support member rollably supports a main guide wheel and a diverging guide wheel. The shock-absorbing members are disposed between each guide wheel support member and the corresponding steering arm, and mitigate the impact load transmitted from the guide wheels to the steering arms.

Abstract: Provided is a guide device for a guide rail-type vehicle which travels while being guided along a travel track. The guide device is provided with: guide wheels which include main guide wheels and branched guide wheels, the main and branched guide wheels being in contact with and roll on guide rails arranged on both sides of the travel track; steering arms which steer the vehicle; and elastic support members which each includes one end affixed to each of the steering arms and which each includes the other end including guide wheels rotatably supported thereon, the elastic support members absorbing an impact load by deflecting about the one end thereof.

Abstract: Provided is a guide device for a rail-guided vehicle that is guided to travel along a travel track, the guide device including: guide wheels that roll in contact with guide rails arranged on both sides of the travel track; steering arms that steer the vehicle; guide wheel support members; and shock-absorbing members. One end of each guide wheel support member is supported at the tip end of a steering arm with shock-absorbing members interposed therebetween, and the other end of each guide wheel support member rollably supports a main guide wheel and a diverging guide wheel. The shock-absorbing members are disposed between each guide wheel support member and the corresponding steering arm, and mitigate the impact load transmitted from the guide wheels to the steering arms.

Abstract: A movable-body-speed-detecting apparatus includes a movable body capable of moving linearly and/or circularly, a plate fixed to the movable body, the plate having a predetermined length in a direction in which the movable body moves, and light emission/reception means arranged such that light output from a light-emitting element enters a light-receiving element. The plate has a window section that passes between the light-emitting element and the light-receiving element in accordance with movement of the movable body and that blocks or allows passage of light to the light-receiving element. The apparatus further comprises speed calculation means for calculating the speed of the movable body by converting the amount of light received by the light-receiving element into a signal and measuring the signal.

Abstract: A movable-body-speed-detecting apparatus includes a movable body capable of moving linearly and/or circularly, a plate fixed to the movable body, the plate having a predetermined length in a direction in which the movable body moves, and light emission/reception means arranged such that light output from a light-emitting element enters a light-receiving element. The plate has a window section that passes between the light-emitting element and the light-receiving element in accordance with movement of the movable body and that blocks or allows passage of light to the light-receiving element. The apparatus further comprises speed calculation means for calculating the speed of the movable body by converting the amount of light received by the light-receiving element into a signal and measuring the signal.

Abstract: By using a second Roberval mechanism having beams orthogonal to beams of a first Roberval mechanism for supporting a weighing dish by a movable pillar and integrating a movable pillar of the second Roberval mechanism with a movable pillar of the first Roberval mechanism, longitudinal and crosswise one-sided loads are shouldered by first and second Roberval mechanisms and. Furthermore, by forming flexible portions flexible for one-sided loads (right and left one-sided loads) about the axis of the first Roberval mechanism on the first Roberval mechanism, torsions due to one-sided loads in the crosswise directions are prevented and influences of the torsions can be reduced. Moreover, by forming flexible portions flexible for a longitudinal one-sided load on the second Roberval mechanism, a torsion due to the longitudinal one-sided load is prevented and influences of the torsion can be reduced.

Abstract: By using a second Roberval mechanism having beams orthogonal to beams of a first Roberval mechanism for supporting a weighing dish by a movable pillar and integrating a movable pillar of the second Roberval mechanism with a movable pillar of the first Roberval mechanism, longitudinal and crosswise one-sided loads are shouldered by first and second Roberval mechanisms and. Furthermore, by forming flexible portions flexible for one-sided loads (right and left one-sided loads) about the axis of the first Roberval mechanism on the first Roberval mechanism, torsions due to one-sided loads in the crosswise directions are prevented and influences of the torsions can be reduced. Moreover, by forming flexible portions flexible for a longitudinal one-sided load on the second Roberval mechanism, a torsion due to the longitudinal one-sided load is prevented and influences of the torsion can be reduced.

Abstract: An electronic balance including a first Roberval's chain, a second Roberval's chain connected to the first Roberval's chain, and a detector. The first Roberval's chain includes a first fixed pillar, a plurality of first beams, and a first movable pillar supported by the first fixed pillar via the plurality of first beams. The first beams extends substantially in parallel with each other and in a first extending direction. The first movable pillar is configured to receive a load to be measured. The second Roberval's chain includes a second fixed pillar, a plurality of second beams, and a second movable pillar supported by the second fixed pillar via the plurality of second beams. The plurality of second beams extends substantially in parallel with each other and in a second extending direction substantially perpendicular to the first extending direction of the plurality of first beams. The second movable pillar is connected to the first movable pillar.

Abstract: In a top scale balance which has a Roberval's chain 10 and a load weight transmitting lever 30 and in which a movable post 13 of the Roberval's chain 10 is connected to a point of force 32 of the lever 30 through an elastic connection fulcrum 51, a horizontal member 12 nearer to the elastic connection fulcrum 51, out of upper and lower horizontal members 11, 12 of the Roberval's chain 10, is greater in rigidity than the other horizontal member 11. Alternately, the upper and lower horizontal members 11, 12 are equal in rigidity and the elastic connection fulcrum 51 is positioned, in the vertical direction, at the center between the upper and lower horizontal members 11, 12. Such an arrangement prevents or reduces the movement of the elastic connection fulcrum 51 in the back-and-forth direction due to an offset placed load. Thus, even though the top scale balance is made in a compact and thin design with the lever ratio increased, the top scale balance is high in precision with a less offset position error.

Abstract: A force measuring instrument for determining the strength of an applied force by measuring the strength of an electromagnetic force developed so as to counterbalance the applied force, the instrument including a force coil, a displacement sensor for detecting any displacement occurring on a scale balance, an analog arithmetic unit for performing PD operation of analog detecting signals sent by the displacement sensor, a pulse converter for converting the analog signal into a signal having a frequency depending upon the magnitude of the analog signal, an up/down counter for counting up or down pulse signals from the pulse converter depending upon the polarity of the analog signal, a D/A (digital-to-analog) converter for converting the number of counts by the up/down counter into an analog signal, and wherein the sum of the output of the D/A converter and the output of the analog arithmetic unit is fed back to the force coil, thereby ensuring that the counts by the counter alone are used to determine the measur

Abstract: An electric balance which allows a pulse current to flow through a force coil with pulses having two kinds of duties for each period of control time, and generates an electromagnetic force at the ratio of mixture of these pulses wherein the duties are controlled so as to bring the electromagnetic force into equilibrium with a load weight, thereby enhancing the resolution of pulse current duty and achieving the production of a high-resolution electronic balance at a reduced cost.

Abstract: In a PID-controlled electronic balance consisting essentially of a weighing pan, a pan stopper for defining the lowest position of the weighing pan, a displacement detector for detecting the displacement of the weighing pan, a PID operation circuit and an electromagnetic force transducer, the PID operation circuit is devised so as to operate, when the weighing pan has its movement kept restricted by the pan stopper, with at least one of the mathematical coefficients increased, the coefficients respectively multiplying the proportionality term integral term and differential term contained in the mathematical operation process carried out by the PID operation circuit.

Abstract: An electronic counter having an electronic force transducer operated with a plurality of pulse currents.

Abstract: A vibration type force detector comprising: a string to which a force to be measured is applied in the direction in which the string is tensioned; a driver for causing the string to vibrate at its natural frequency and simultaneously producing a series of pulses at a frequency in synchronism with the vibration of the string; a gate to which the series of pulses are applied; a counter for counting the series of pulses that have passed through the gate; means for providing a gating time determined in accordance with the result of the counting of the counter; and a controller for controlling the gate in accordance with the gating time. The gating time providing means is so arranged that as the vibration frequency of the string increases, the gating time lengthens.

Abstract: This invention provides an electronic balance comprising a housing; weighing means enclosed in the housing; a pan on which an object to be weighed is placed and having a space under the top plate thereof; a sensing member having one end connected to the weighing means and projecting out of the housing top wall, with the other end of the sensing member being connected to and supporting the pan outside the housing; a calibration weight arranged in the space under the pan; and operating means for loading and unloading the calibration weight on and from the sensing member. There are disclosed a variety of constructions of the operating means.

Abstract: An electronic balance in which a means for transmitting a force due to a weight loaded on a weighting pan to a weight sensing means is made of one metallic block from which are integratedly cut out a Roberval mechanism, a lever and a connecting portion for connecting the lever to the Roberval mechanism.

Abstract: An electronic balance devised so that the weighing pan of the balance may settle down fast to make the balance indicate a correct value of measurement quickly without being long disturbed by the air turbulence arising when the door of the weighing pan protecting chamber of the balance is opened and continuing for a while after the door has been closed. This electronic balance is provided witha heater on the base portion of the weighing pan protecting chamber so that the heater is located just below the door of the chamber. The heater generates hot air streams rising upward therefrom along the outer surface of the door. When the door is opened, the air streams play a role of an air curtain to prevent a possible air exchange between the hotter chamber warmed by the electronic circuit of the balance and the cooler surrounding atmosphere.

Abstract: A vibration type force detector in which the vibration string is made of a platinum-based nickel-containing alloy. The magnitude of a force to be detected is obtained through the measurement of a natural vibration frequency of a string vibrating with the force loaded thereto. However, the force detector using a Pt-Ni alloy vibration string based on the invention makes it possible, for the first time, to apply a vibrational type force detector to a precision measurement of force or weight. Measurement with an accuracy of 10.sup.-5 is made possible by the present invention.

Abstract: There is disclosed a weighing scale in which a non-Roberval type load cell is used to detect a weight to be measured. The load cell used consists of two parallel cantilevers with the free ends connected to each other through a connecting means and of four strain gauges applied to the cantilevers by sticking every two of the four strain gauges on two separate positions in the longitudinal direction of each of the cantilevers. The four strain gauges constitute a bridge circuit which outputs the weight value of a weight placed on a weighing tray connected to the two cantilevers so that the center of the tray is positioned above the center of the plane made by the two cantilevers. According to this invention the weighing errors due to an eccentric or uneven weight loading on the tray are automatically eliminated on account of the structural symmetry of the load cell used. The difficulties in manufacturing a Roberval type precision load cell have finally be put out of the way by the present invention.