Abstract: A turning system for use in a track-laying vehicle comprising: a power source; a steering motor driven by the rotation of the power source, for driving crawler belts provided at both sides of the vehicle such that a relative travel difference is caused between the crawler belts, thereby turning the vehicle rightwards or leftwards; a power source revolution speed detector for detecting the actual revolution speed of tile power source; and a steering motor control unit for performing a control such that, a target revolution speed set for the steering motor is decreased when the actual revolution speed of the power source detected by the power source revolution speed detector decreases below a target revolution speed set for the power source by a specified revolution speed or more.

Abstract: In a self-propelled crushing machine mounting an operator's platform (13), a hopper, (11) a crusher (8) coupled with the hopper and a driving power source (10) on a vehicular chassis (1) having a traveling device (19), the crusher (8) is provided at a longitudinally intermediate position of the vehicular chassis (1), the hopper (11) is located at the front side of the crusher, the driving power source (10) is located at the rear side of the crusher, the operator's platform (13) is located at one lateral side of the crusher, and a motor (24) for crusher is located at the other lateral side of the crusher. By this, the positions of the hopper (11), the engine (10) and the motor (24) can be low so that the overall height of the crushing machine can be low so as not to cause a problem in transportation by loading on the rear chassis of the truck.

Abstract: A turning control system for use in a track-laying vehicle comprising: a steering motor for driving crawler belts provided at both sides of the vehicle such that a relative travel difference is caused between the crawler belts, thereby turning the vehicle rightwards or leftwards; a steering instructing device which can be displaced from a neutral position by operation and which instructs, in accordance with its displacement direction and displacement distance, a turning direction and a turning radius for the vehicle, the turning radius decreasing as the displacement distance increases; a displacement detector for detecting the displacement of the steering instructing device; a vehicle speed detector for detecting the vehicle speed at which the vehicle moves forwards or backwards; and a steering motor revolution speed control unit for controlling the revolution speed of the steering motor such that the revolution speed of the steering motor becomes proportional to the vehicle speed detected by the vehicle spee

Abstract: A steering control system for use in a track-laying vehicle comprising: a power source; a steering motor driven by the rotation of the power source, for driving crawler belts provided at both sides of the vehicle such that a relative travel difference is caused between the crawler belts, thereby turning the vehicle rightwards or leftwards; a steering instructing device which can be displaced from a neutral position by operation and which instructs, according to the direction and distance of its displacement, a turning direction and a turning radius for the vehicle, the turning radius decreasing as the displacement distance increases; a displacement detector for detecting the displacement of the steering instructing device; and a steering motor revolution speed control unit for obtaining a target steering motor revolution speed which is made proportional to the revolution speed of the power source based on the displacement of the steering instructing device detected by the displacement detector and controlling

Abstract: A hydraulic drive system of a steerable wheel of a dump truck facilitates the attaching and detaching of a hydraulic motor and allows for a large hydraulic motor to be used. In the drive system, a wheel axle is rotatably supported within a receptacle seat supported on a yoke. The steerable wheel is rotatably mounted on the outer periphery of the receptacle seat. The steerable wheel and one end of the wheel axle are connected via a speed reducer. A motor casing 33 of a hydraulic motor is connected by bolts to the receptacle seat at an end of the seat remote from the steerable wheel so that the hydraulic motor can be attached to and detached from the receptacle seat by tightening and loosening the bolts.

Abstract: A hydraulic excavator adapted to be changed over simply to a fine operation mode so as to control the capacity of a hydraulic pump through load-sensing control to thereby make it possible to perform accurate work when the machine needs to be finely operated temporarily for operations such as ground levelling, and position adjustment on a dump vessel, wherein the fine operation mode is easily cleared to switch the excavator to a standard mode to thereby improve operability, as well as work efficiency. When the excavator is switched to the fine operation mode so as to control the capacity of the hydraulic pump through load-sensing control for accurate work, the engine is driven at such a torque and engine revolution as permitting a minimum fuel consumption, thus reducing the fuel consumption of the engine.

Abstract: An injection compression molding machine (1) has a clamping unit (10) for positioning an upper mold (15) with respect to a lower mold (16), and an injection unit (30). When the upper mold (15) moves to a specified, slightly open position, a screw (61) of the injection unit (30) is advanced to start the injection of molten resin. When the screw advances to a specified position, the screw speed is decelerated to a specified speed. In addition, when the screw advances to a predetermined stop position, the screw is stopped and the injection rate of molten resin is simultaneously reduced and the molten resin is kept pressurized until the gate (71) is closed.

Abstract: An operating valve device for supplying fluid under pressure to an actuator comprises: a first hole (3) and a second hole (4) for allowing fluid under pressure supplied by a pump (P) into an inlet port (2) connected with the pump to selectively flow into pressure chambers (B.sub.1, B.sub.

Abstract: A thin sulfide film can be formed by simultaneously generating under different conditions a plurality of deposition materials to be deposited on a substrate, using the fact that sulfur has a higher vapor pressure. Sulfur vapors can be generated in an external vessel (6) which is located outside the vacuum deposition vessel (1). The sulfur vapors can then be introduced into the vacuum deposition vessel (1) through a vapor inlet tube (7) to form a localized atmosphere of sulfur vapors within the vacuum deposition vessel (1) in the vicinity of the substrate which is positioned on a substrate holder (4). Chemical bonding, on the substrate, of the sulfur vapors and the vapors of other deposition materials generated from other deposition sources provided in the vacuum deposition vessel (1) form a thin film of high quality with good reproducibility.

Abstract: A machining apparatus for improving the roundness of a work. The outer circumference of a work is divided into predetermined intervals, and a difference between the radius of that portion of the work after machined and a target radius thereof is detected for each of the intervals. The position of a tool which corresponds to every predetermined rotation angle is corrected on the basis of a detected radius difference at each of the intervals. The path of the tool is interpolation-computed on the basis of the corrected positions. The tool is turned along the interpolated path, so that the work is machined with a high precision.

Abstract: A mechanical - hydraulic transmission for a crawler-type vehicle is provided having a reduced dimension in a widthwise direction perpendicular to input/output shafts and capable of ready installation on an existent crawler steering device. The transmission is arranged such that a power input shaft (1), directly connected to a prime mover, an intermediate shaft (9) and an output shaft (19), are concentrically related and arranged in a longitudinal column. Normal- and reverse-rotation planetary gear devices (5, 6), having respective clutches (7, 8) thereof, are mounted on a periphery of the power input shaft (1), and the power input shaft (1) is connected to a variable displacement hydraulic pump (2).

Abstract: An apparatus used for elimination of the influence of spiking in an excimer laser device. The values of predetermined parameters which contribute to the spiking such as oscillation suspension time in a successive pulse oscillation are obtained. Discharge voltage for each of the successive laser beam pulses is changed on the basis of the obtained parameter values such that subsequent successive laser beam pulses have the same energy. The discharge voltage is stored according to time elapsed after the start of the successive pulse oscillation, and discharge voltage is controlled such that stored discharge voltage corresponds to the measured elapsed time. During the time when a stepper is not performing processing using the laser beam, the laser beam pulse is oscillated under predetermined conditions and the energy of the resulting pulses is detected.

Abstract: An automatic drive control system for a bulldozer comprising a digging start detector for detecting that the bulldozer is in a digging start position, a digging end detector for detecting that the bulldozer is in a digging end position, a driving direction detector for detecting the momentarily varying driving direction of the bulldozer, and a drive controller for shifting a transmission into a forward gear when the digging start detector detects that the bulldozer is presently in the digging start position; shifting the transmission into a reverse gear when the digging end detector detects that the bulldozer is presently in the digging end position; and controlling the bulldozer such that the driving direction detected by the driving direction detector is made coincident with a target driving direction when the bulldozer is moving from the digging start position towards the digging end position.

Abstract: A serial controller in which nodes to which are connected one or a plurality of sensors and one or a plurality of actuators are connected in series in the form of a closed loop including a main controller which sends data frame signals including a first special code, a second special code and output data for the actuators. Each of the nodes adds the data received from its associated sensor to the end of the first special code and picks up the output data for its associated actuator from the end of the second special code. The main controller controls the interval for sending the data frame signals depending upon the number of sensors and the number of actuators detected based on the initial frame signal that includes the first special code, the second special code and data for detecting the number of actuators, in order to improve the transmission efficiency and to carry out the control in real time.

Abstract: A hydraulically-actuated multi-step transmission is adapted to prevent the occurrence of engagement shocks of a direct-coupled or lock-up clutch associated with a torque converter. Downshifting is carried out once with the direct-coupled clutch (8) engaged when the vehicle is slowed toward a stop. This is followed by a further downshift with the accelerator released and the direct-coupled clutch disengaged.

Abstract: An electrode structure of a metallic particle detecting sensor capable of detecting with high efficiency metal powders floating in a wide range in an oil tank. The electrode structure is formed by opposing, on a substrate, a pair of electrodes (1, 2), formed of thin film metals of such as Ta, W, Pt, Cr, Au or the like, having combed (toothed) structures with their respective teeth being meshed or interdigitated with each other.

Abstract: A device for mounting a position detecting sensor for detecting a stroke of a cylinder. It has such an arrangement that a rotary angle of a magnetic sensor (1) is regulated to within .+-.5 degrees by a slit (9) formed in a housing (2) mounted thereon with the magnetic sensor (1) and a rotation-locker (7) mounted on a cover (6), the slit (9) allows the housing (2) and the cover (6) to slide on each other, but does not allow the both members to fall off each other, and the cover (6) and a head (4) are aligned with each other by a knock pin (10). With this arrangement, assembling work and highly accurate positioning can be easily performed.

Abstract: In an error checking apparatus for a serial signal transmission system comprising a plurality of nodes in a centralized control system of various devices such as presses, machine tools, constructing machines, ships, airplanes, unattended conveyer systems and unattended warehouses, plural types of error check codes are added to serial transmission data for each node. The node checks the received data for each of the received error check codes, adds error codes indicative of the result of the error check to the respective error check codes and sends them to a downstream node and a main controller.

Abstract: A reusable weld backing capable of withstanding long use, which is held against the underside of a workpiece to provide weld-metal support in full penetration welding, the weld backing comprising a substrate made from copper or a copper alloy; and a copper-aluminum alloy layer containing 9 to 23% by weight of aluminum and formed at least on the surface of the substrate, the surface being on the side which faces a weld zone.

Abstract: A gradient bias magnetic field is applied to MR elements to improve precision of detection and prevent magnetic disturbance, and the structure of mounting the sensor is simplified. For this purpose, a magnet (10) is provided on the back surface side of the MR elements (12a, 12b) to generate a magnetic field at right angles with the above surfaces, and ferromagnetic members (34) are arranged on the sides of the MR elements (12a, 12b) to bend the magnetic flux .phi. generated by the magnet (10) such that a parallel bias magnetic field acts upon the MR elements (12a, 12b).