Abstract: A power transmission for driving a vehicle wherein a high-low speed changer is disposed between an engine and a primary speed change mechanism. The speed changer comprises a planetary gear mechanism provided between an input shaft and an output shaft, a speed increasing clutch for causing the gear mechanism to effect a speed increase, and a direct coupling clutch for coupling the input shaft to the output shaft via the gear mechanism without speed change. Since the torque transmitted to the speed change mechanism is small, the transmission can be compact in its entirety.

Abstract: A piezoelectric buzzer comprising a case having the shape of a bottomed cylinder, a piezoelectric diaphragm fixedly disposed within the case, a cover plate fitted in the open end of the case, and terminals integrally combined with the cover plate and each having one end in contact with the piezoelectric diaphragm and the other end projecting outside from the cover plate. Since the cover plate and the terminals are combined together by insert moldings, no gap is formed between the cover plate and the terminals, no sealing work for sealing gaps between the cover plate and the terminals is necessary, the manufacturing process is simplified, and the piezoelectric element is not exposed to the external atmosphere.

Abstract: A piezoelectric buzzer comprising a case having the shape of a bottomed cylinder, a piezoelectric diaphragm fixedly disposed within the case, a cover plate fitted in the open end of the case, and terminals integrally combined with the cover plate and each having one end in contact with the piezoelectric diaphragm and the other end projecting outside from the cover plate. Since the cover plate and the terminals are combined together by insert molding, no gap is formed between the cover plate and the terminals, no sealing work for sealing gaps between the cover plate and the terminals is necessary, the manufacturing process is simplified, and the piezoelectric element is not exposed to the external atmosphere.

Abstract: In a radial plating cell comprising a winding roll for winding thereon a metal strip, an arch-shaped anode spaced at a predetermined distance from the winding roll, and a pair of edge masks interposed between the winding roll and the anode in register with the edges of the metal strip, a mechanism for moving the edge mask is comprised of a drive screw and a travelling nut engaged thereon and received in a channel which is formed in the anode surface and extends in the transverse direction of the metal strip, whereby the edge mask secured to the nut is moved along the drive screw with rotation of the drive screw.

Abstract: The invention provides an axle reduction apparatus for a tractor having a planetary reduction mechanism mounted between an axle and an axle drive shaft. The axle carries an integrated gear consisting of an input gear to receive drive from the drive shaft and a sun gear of the planetary reduction mechanism.

Abstract: An apparatus in which a metal strip is passed in contact partly around the outer circumferences of a number of spaced cooling rolls through which coolant passes. The apparatus includes temperature detectors for detecting the temperature of the strip before contact with each of the cooling rolls, and coolant temperature regulators controlled in accordance with the detected temperature of the strip to adjust the temperature of the coolant passing through each cooling roll to a range which limits the temperature drop of the strip such that unacceptable irregularities or distortions in the configuration of the strip cannot occur. The coolant used for each cooling roll is selected with a boiling point appropriate to the respective detected temperature for each roll. In the preferred arrangement, further temperature detectors are provided for each cooling roll to detect the temperature of the coolant, and output signals from both detectors are inputted to a control for regulating a flow rate valve.

Abstract: A power steering apparatus comprises a center pin having an axis of forward-rearward direction of a vehicle body and disposed at the middle portion of the vehicle body in the transverse direction, a front wheel supporter disposed swingably about the center pin, a steering arm for each of front wheels operatively connected to the front wheel supporter and a steering cylinder 23 for operating the steering arms. The steering cylinder is disposed perpendicular to the center pin and mounted on the front wheel supporter so as to swing in integral with the front wheel supporter.

Abstract: A process for producing a solid-state color pickup array, which comprises forming a resist mask on a wafer having a solid image pickup array; vapor-depositing a colorant on the wafer having the resist mask and on the resist mask; and removing the resist mask by dissolution, thereby eliminating selectively the colorant film vapor-deposited on the resist mask.

Abstract: An air-conditioning method and system controls the temperature of air outputted from an air conditioner outlet duct into the passenger compartment of a vehicle at a constant level, with a small time constant of recovery, by adjusting the air mix door opening percentage. The air-conditioning method comprises the steps of calculating a target outlet duct air temperature on the basis of a preset passenger compartment air temperature, a detected outside-air temperature, and a detected passenger compartment air temperature in accordance with a heat equilibrium equation and calculating an air mix door opening percentage on the basis of the calculated target outlet duct air temperature in accordance with a linear interpolation between two endpoints of a selected one of three characteristics representative of relationships between outlet duct air temperature and air mix door opening percentage respectively stored for outside-air introduction mode, inside-air recirculation mode, and cooler compressor operation mode.

Abstract: An automobile air conditioning system is provided with a control system for controlling the flow rate of hot or cool air discharged into the passenger compartment. The air flow rate is controlled in relation to the sensed value of the ambient air temperature and the temperature of a heat source of the air conditioning system. If the sensed temperatures are lower than predetermined reference levels, the air flow rate is gradually increased at a moderate increasing rate. The air flow rate is more rapidly increased when the sensed heat source temperature is higher than the reference level.

Abstract: An automobile air conditioning system is provided with a control system for controlling the flow rate of hot or cool air discharged into the passenger compartment. In this control system, the air flow rate is increased with an increase of the absolute value of the temperature difference between a predetermined reference temperature and a room temperature of the compartment detected by a sensor, and is decreased with a decrease of the absolute value.

Abstract: A method of and a device for controlling an air conditioning system in which an air-flow proportioning door is positioned between a heater unit and a refrigerant evaporator unit and is movable into and out of an angular position shutting off the flow of air from the evaporator unit to the heater unit and in which a refrigerant compressor unit associated with the evaporator unit is operated to alternately stop and start depending upon the temperature of the air delivered from the evaporator unit, wherein the angular position of the air-flow proportioning door and the compressor stop and start temperatures are controlled depending upon a target blowoff temperature calculated from decided and detected temperatures of the space to be air conditioned and a detected ambient temperature so as to reduce the duty cycle of the compressor unit.

Abstract: An air-conditioning method and system for an automotive vehicle according to the present invention automatically maintains the temperature of air within the passenger compartment at a value preset by a passenger compartment air temperature presetting device and adjusted to a comfortable temperature which varies according to the outside-air temperature in accordance with a predetermined relationship defined by three linear functions having two points of intersection. The method comprises the steps of calculating a basic outlet duct air temperature, calculating an outlet duct air temperature correction, adding the two calculated values, and calculating an air mix door opening percentage, in addition to calculating a comfortable passenger compartment air temperature.

Abstract: A capacitor arrangement for use in filtering high frequency noises includes a dielectric disc plate and electrodes deposited on opposite flat surfaces of the disc plate. A terminal leg extends from one electrode for the connection with ground, and two terminal legs extend from the other electrode for the connection with consecutive lead lines. The terminal legs connected with the consecutive lead lines are mounted with magnetic elements for increasing the inductance in the terminal legs.

Abstract: The high frequency semiconductor device of the present comprises a pair of diodes and a transfer switch. The anode electrodes of the diodes are connected together and the transfer switch operates to connect the cathode electrode of one diode to ground and the cathode electrode of the other diode to a voltage source so as to forwardly bias one diode and reversely bias the other diode. By the selective operation of the transfer switch, the device operates either as a switch for passing high frequency signals or as an attenuator for high frequency signals.