Abstract: A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.

Abstract: A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.

Abstract: A copolymer, which comprises about 30 to about 70% by weight of perfluoroalkylethyl (meth)acrylate represented by the following general formula:CH.sub.2 .dbd.CRCOOCH.sub.2 CH.sub.2 Rfwhere R is a hydrogen atom or a methyl group, and Rf is a perfluoroalkyl group having 4 to 16 carbon atoms; about 25 to about 60% by weight of stearyl (meth)acrylate; about 1 to about 15% by weight of 2-chloroethyl vinyl ether; and (d) about 0.1 to about 5% by weight of N-methylol (meth)acrylamide, sum total being 100% by weight, is novel and can form a water- and oil-repellent agent having a good resistance to yellowing of textiles, etc. and capable of shorter curing and low temperature curing.

Abstract: A process for producing an unsaturated glycol diester disclosed, which process comprises reacting a conjugated diene with a carboxylic acid and molecular oxygen in the presence of a solid catalyst comprising (1) palladium and (2) tellurium as active components supported on a carrier, wherein a said carrier is a solid carrier in which a proportion of the volume of pores having a pore radius in the range of from 5 to 50 nm is 80% or more relative to the total volume of pores having a pore radius in the range of from 1.8 to 10,000 nm.

Abstract: A radio relay system including a water-proof conductor housing on which is located a pair of antennas, one antenna being used for transmitting and receiving radio carrier wave signals of a first and a second frequency, respectively, while the other antenna is used for transmitting and receiving radio carrier wave signals of a third and a fourth frequency, respectively. A skirt for each of the antennas is located adjacent the antennas on the housing, one skirt has a length equal to a quarter of the wavelength of the first frequency while the other skirt has a length equal to a quarter wavelength of the third frequency.

Abstract: A radio relay system which comprising an external conductor, a first antenna installed on the externals conductor for transmitting and receiving a first radio carrier wave, a second antenna installed on the external conductor for transmitting and receiving a second radio carrier wave, a skirt provided around the second antenna, the skirt having a length equal to a quarter of the wavelength of the second radio carrier signal, and a relay device which includes a branching filter for extracting a part of the second radio carrier wave as a carrier wave, an adjusting unit for adjusting the amplitude and phase of the carrier wave extracted by the branching filter, and a combining unit for combining the carrier wave extracted by the branching filter with the second radio carrier wave received through the first antenna, and the relay device transmitting as the second radio carrier through the second antenna the first radio carrier wave received through the first antenna.

Abstract: A base station for a mobile communications system including an antenna for transmitting a radio carrier wave to a mobile communications device and receiving signals therefrom, a coaxial external conductor including a skirt in the form of a sun shade having a length equal to a quarter wavelength of the radio carrier wave, a radio section located inside the coaxial external conductor for providing radio communication with the mobile communication device via the antenna, and a connecting section connecting the radio section to a telephone line and where the antenna is configured in the form of an upper disk of a discone antenna and where the skirt is a lower conical member of the discone antenna.

Abstract: A method of manufacturing a semiconductor device including a MOS-type field effect transistor includes cleansing a surface of a substrate; forming, next to the cleansing step, a gate oxide film on the cleansed surface of the substrate; wherein the cleansing step includes dry-etching the surface of the substrate in an atmosphere in which hydrogen fluoride and a substance containing at least a chlorine atom coexist in gaseous state and removing an oxide film and metal impurities on the surface of the substrate. Preferably, the dry-etching is performed under heat and decompression.

Abstract: A cephalosporin compound represented by the general formula: ##STR1## This compound exhibits a high antimicrobial activity.

Abstract: A method for producing an unsaturated glycol diester by reacting molecular oxygen, a carboxylic acid and a conjugated diene in the presence of a solid catalyst containing palladium and tellurium supported on a carrier, wherein an active carbon with the total pore volume of pores having radii of from 18 to 100,000 .ANG. being at least 0.45 cc/g and with the volume of pores having radii of at least 3,000 .ANG. constituting at least 50% of the total pore volume, is used as the carrier for the solid catalyst.

Abstract: An air bag system for an automobile comprises a collision detector for detecting a collision of the automobile, an inflater for generating gas under pressure, based on an output from the collision detector, and air bag device, mounted on a front body member located in front of a seat, for receiving the gas from the gas generator, the gas causing the air bag device to take a predetermined inflated configuration. A seating condition sensor detects a seating condition of a passenger seated on the seat, taking into consideration seat position, reclining angle, passenger size, and posture. A control unit controls operation of the air bag device, in accordance with the seating condition of the passenger, so that the air bag inflated is brought into an optimal contact with the passenger.

Abstract: Parts such as bearings are press-fitted into a workpiece by an automatic system which includes a positioning device for positioning a workpiece, and a pressing device for press-fitting a part into the workpiece which is positioned by the positioning device. The positioning device includes a jig base having a stationary reference surface, a support table movable toward and away from the stationary reference surface, and a pusher unit for pushing the support table to create a gap between an end surface of the workpiece and the stationary reference surface when the workpiece is placed on the support table. The pressing device includes a presser unit including a presser rod for holding the part thereon, the presser unit being movable toward and away from the support table, and an actuator for pressing the end surface of the workpiece against the stationary reference surface to position the workpiece before the part is press-fitted into the workpiece by the presser rod.

Abstract: A lubricating apparatus for an engine of vertical crankshaft type according to the present invention includes an oil pan arranged at a lower portion of a crank case for supporting a vertical crankshaft, and an oil tank having a volume larger than that of the oil pan arranged independently from the oil pan, and wherein an outlet of the oil tank is communicated with each of lubricating portions through the oil pan, an intake portion of the oil tank is communicated with the oil pan and the oil in the oil pan is fed into the oil tank by means of an appropriate oil feeding mechanism.

Abstract: A cam shaft for engine is constructed such that the cam shaft driven by a crankshaft is rotatably supported at both ends by respective journal bearing boxes. Either one of the journal bearing boxes is fed with pressure oil from an oil pump to cause the oil pressure gathered within the journal bearing box to act upon the end face of the cam shaft so that the cam shaft is normally biased in a constant axial direction.

Abstract: A suction air passage of the side-valve type of internal combustion engines is composed of a pipe-shaped portion which is integrated into the cylinder, for example by means of metal mold, and is opened at its outside, and a cover which is fixed to the pipe-shaped portion to close the opening thereof.

Abstract: An input and/or output unit which reads or records a picture utilizing a scanning beam in which sampling positions of picture elements in a main scanning direction are uniformly spaced. A first clock signal is produced which is at least three times as high in frequency as an output sampling clock signal. The first clock signal operates a counter, the output of which is compared with the output of a ROM. The ROM is addressed by a counter which is incremented by output comparison pulses. The output of the comparator is also utilized as the output sampling signal. Numerical values are stored in the ROM such that the output pulses from the comparator occur at times corresponding to constant sampling intervals of the scanning beam along a scanning line.

Abstract: A fuel supply system for a small engine including a constant level fuel chamber for receiving fuel from a fuel tank through a fuel drawing pipe to eject the fuel into a carburetor through a main nozzle after temporarily storing the fuel therein. A cover is provided to enclose the fuel drawing pipe and the constant level fuel chamber to separate the fuel drawing pipe and the constant level fuel chamber from a fuel storing section in the fuel tank, to enable fuel of a constant flow rate to be fed to the carburetor through the main nozzle irrespective of variations in the liquid level in the fuel storing section.

Abstract: Engine noise attenuator for motor-propelled boats including a housing made of resilient material and having one end connected to the exhaust pipe and a perforated pipe disposed within the housing and supported by the housing wherein the perforated pipe is in communication with the exhaust pipe such that the perforations form a resonance chamber between the housing and the exhaust pipe.

Abstract: A motor-propelled boat comprising a boat hull, an internal combustion engine mounted on the boat hull through a resilient mounting and adpated to drive a propulsion unit, the engine including a body and exhaust unit connected with the body, the exhaust including a first pipe rigidly connected with the body and a second pipe connected with the first pipe through a resilient connecting unit, the second pipe being further supported through a resilient support by the body of the engine.

Abstract: Power propelled boat including a boat hull and an engine for providing a propulsive force. The engine has one or more electric components such as ignition coils, voltage regulators and capacitor discharge ignition units which are housed in a casing mounted on the boat hull. The components are connected with functionally associated electric parts such as ignition plugs, generators and magnetos through wires which are connected with the components through a specially designed connector.