摘要:
Mineral particles consisting essentially of metallic magnesium particles subjected to special processing are accommodated directly in a microporous cartridge made of a sintered polypropylene material, and the cartridge is closed. The cartridge is put in a closed raw water container, whereby a large amount of hydrogen gas is generated in a short period of time and released from the whole surface of the cartridge in the form of microbubbles so as to be dissolved in raw water in the container.
摘要:
In a controller for a vehicle-mounted component, a shift position detector that detects an effective shift position of an automatic transmission. A shift position switching unit switches the effective shift position of the automatic transmission. A parking switching unit mechanically locks the output shaft of the automatic transmission when the effective shift position in a parking position. A shift position switching controller, which is not energized when the engine is stopped, controls the shift position switching unit. A memory device memorizes the effective shift position at a timing when the shift position switching controller stops being energized. A vehicle-mounted component controller prohibits an operation of a vehicle-mounted component when the effective shift position in the memory device is not in the parking position while the current supply to the shift position switching controller is stopped.
摘要:
A brushless synchronous motor includes a stator having a plurality of phase coils, a rotor disposed opposite the stator, a magnetic sensor for detecting a rotation angle of the rotor, a power supply circuit connected to the phase coils, a control circuit for controlling the power supply circuit so that the motor rotates synchronously. In the above motor, a circuit board includes a wiring circuit connecting the phase coils with the power supply circuit, and the magnetic sensor is directly fixed to the circuit board so that dimensional variation of the magnetic sensor relative to the stator can be minimized.
摘要:
A synchronous motor control system includes a motor including a stator having a plurality of sets of stator teeth and phase coils, a rotor having a plurality of rotor teeth disposed opposite the stator teeth and a stopper for restricting the rotation angle of the rotor relative to the stator and a control unit for sequentially controlling electric supply to the phase coils to rotate the rotor to a prescribed rotation position. The motor is controlled by the control unit to operate through the following steps of supplying current to a specific group of the phase coils, sequentially supplying current to the phase coils to rotate the rotor in one direction at a speed not to step out of synchronization to rotate the rotor until it is stopped by the means for restricting, and sequentially supplying current to the phase coils to rotate the rotor in the other direction at a speed not to step out of synchronization until the number of times of current supply becomes a prescribed number.
摘要:
A radial inner portion of a rotor core, where a rotor core and a rotor shaft are connected, has an electromagnetically excessive capacity. A recess is provided at the radial inner portion of the rotor core. The recess is a cylindrical bore retracting in the axial direction from the front surface of the rotor core, facing to a reduction gear unit, toward the rear surface of the rotor core. A sun gear bearing, supporting a sun gear of the reduction gear unit, is disposed at least partly in the recess. Extending the sun gear bearing in the axial direction brings the effects of preventing inclination of the sun gear, improving transmission efficiency of the reduction gear unit, and producing a large output torque without increasing the overall size.
摘要:
A portable, hydraulic prying machine is disclosed for use, for example, in prying open the doors of apartment buildings or of motor vehicles by rescue members in the event of an emergency. A motor and pump assembly, comprising an electric motor and a hydraulic pump driven thereby, is coupled to a pry assembly solely through the medium of a flexible conduit for delivery of a fluid under pressure from the pump to a hydraulic cylinder included in the pry assembly. The hydraulic cylinder on extension causes a pair of prying jaws to spread apart for forcing open the door. Being practically separate from the rest of the machine, the pry assembly is easier of handling. Additional embodiments are disclosed in which the pry assembly is replaced by other tool assemblies for other operations.
摘要:
An inspection electrode unit for printed wiring board, which includes an insulating substrate; an inspection electrode element set up on one side of the substrate in which inspection electrodes are formed at standard grids crosswise arranged and which element has a plurality of functional regions each having the same inspection electrode arrangement; and a connecting material for electrically connecting the inspection electrodes to one another which are placed in the corresponding positions of the plural functional regions, to form commonized electrodes therefore.
摘要:
A portable, power-driven machine for cutting a threaded rod to any required length by forcing a blade punch into a die cavity. The die has a series of semicircular internal threads which extends across the die cavity and which mates with the thread on the threaded rod in order to protect the latter from being ruined by cutting. The internal threads on the die have a depth less than the depth of the thread on the threaded rod, and clearances are provided between the flanks of the die thread flanks and those of the thread on the threaded rod, so that the die contacts the threaded rod only between the roots of the threads on the die and the crests of the thread on the threaded rod, in order to prevent those of the die threads which are located next to the die cavity, from being ruined by the impact of cutting.
摘要:
An electrophotographic color image forming machine registers which a second color toner image on a first color toner image which has been previously formed on an image carrier to form a color image. The registered images are then transferred onto a recording sheet. The machine includes control apparatus that includes first and second exposure control modulators which respectively control an exposure amount of at least one of the first color toner images and the second color toner image. A smoothing processor controls at least one of a size and a position of at least one of the first and second color toner dot images within each of a plurality of pixels and a discriminator determines whether one of the size and the position of the dot image should be controlled. A hue corrector is provided which adjusts a ratio of the exposure amounts provided by the first and second exposure control modulators to control the first and second exposure control modulators on the basis of a discriminator result of the discriminator.