Abstract: A heater is adapted to provide heat for heating a room by effecting heat exchange in a heat section which is between combustion and ventilation sections. The heat exchange section comprises a rotary body positioned across the combustion and ventilation sections so as to rotate at that position. The rotary body has air flow passages extending in the same direction as the axis of rotation of the rotary body. The heater can effect heat exchange with an increased efficiency and also can prevent the interior of the room from being abnormally dried.

Abstract: The present invention relates to a method for drawing up a crude oil containing a great amount of wax or a high-viscosity crude oil. The method of the present invention is characterized by cracking or fractionating the crude oil which has been drawn up, in order to prepare a cracked oil or a gas oil, and by drawing up the crude oil, while injecting a part of the cracked oil or the gas oil into an oil well. According to the present invention, an efficient drawing operation can be achieved.

Abstract: The disclosed invention provides a novel method of perforating a main pipeline while in service, and split joints suited to this method, in order to connect a branch pipeline thereto. According to this method, perforating work is carried out from an opposite side across the main pipeline to where the branch pipeline is connected, as distinct from known methods in which perforating work is carried out on the side of the main pipeline to which a branch pipeline is connected.

Abstract: Waste water containing at least two kinds of components among suspended solids, ammonia and chemically oxidizable substances is treated in a liquid phase oxidation in the presence of a catalyst supported by a carrier of honeycomb construction.

Abstract: A method of and an apparatus for detecting damage to a buried object which includes the steps of (a) providing a buried object extending in a longitudinal direction which has an electrically insulating layer over a conductive member, (b) connecting one terminal of a power supply to the conductive member at a first position thereon, (c) connecting the other terminal of the power supply to an ammeter which is grounded, (d) connecting both terminals of at least one voltmeter to the conductive member on each side of the first position with the terminals of each voltmeter being spaced apart in the longitudinal direction, (e) connecting at least one voltmeter and the ammeter to data processing equipment for analyzing output values from the at least one voltmeter and the ammeter when power is supplied to the conductive member from the power supply, (f) supplying electric current from the power supply to the conductive member, and (g) measuring and comparing output values from the ammeter and the at least one voltmet

Abstract: An improved coupling for a corrugated conduit includes a main tubular body with a sleeve defining a conduit receiving bore terminating at its inner end in an annular shoulder projecting radially inwardly of the tubular body. A nipple clamps the end portion of the conduit and is inserted together therewith into the conduit receiving bore where it is pressed forwardly by rotating a nut threaded on the sleeve for forcing the end of the conduit into pressing contact with the shoulder. The nipple is externally shaped to have a polygonal configuration so as to be slidably but unrotatably inserted in the correspondingly shaped conduit receiving bore, preventing the conduit from being twisted during the securing operation of rotating the nut about the sleeve.

Abstract: This invention provides a process for treating ammonium nitrate-containing waste water which comprises subjecting the waste water to wet thermal decomposition in the presence of a catalyst supported by a carrier and containing as an active component at least one of precious metals and compounds thereof insoluble or sparingly soluble in water while maintaining the waste water at a pH of about 3 to about 11.5 and a temperature of about 100.degree. to about 370.degree. C.

Abstract: Pitch free from quinoline insoluble components is prepared by heat-treating coal tar or coal tar pitch in the absence or in the presence of carbonaceous particles and centrifuging at a high temperature the reaction product resulting from the heat treatment or a mixture of the reaction product from the heat treatment and coal tar-type light or middle oil.

Abstract: A fluid coupler having a female coupling member with an incorporated valve and a male coupling member for detachable insertion into one end portion of the female coupling member. The female coupling member has an annular flange which projects inwardly thereof to define a valve seat and a head portion having a diameter larger than the inside diameter of the annular flange and cooperative therewith to form the valve. A compression spring biases the valve member forwardly into a closed position. When the male coupling member is inserted, the valve member is biased against the force of the compression spring to open the valve and allow fluid flow from the valve into the male coupling member.

Abstract: Slot-array antennas are connected by waveguides (14, 15, 16, 17) to microwave generators and are disposed within a vacuum drying tank of a drying apparatus. Blocking plates (23) are mounted in the waveguides so as to keep the waveguides airtight thereby maintaining an atmospheric pressure within the waveguide portions near the microwave generator during operation of the apparatus. The slot-array antennas (19, 20, 21, 22) have heat pipes (27) attached to the sides of said antennas so that a heat radiation may be effected simultaneously with the microwave heating.

Abstract: A method and an apparatus for automatic quantitative measurement of textures by image analysis for measuring textures of a material containing various optically anisotropic textures. An image of the material is divided into a plurality of sections and brightness of each section is classified into a plurality of stages to be stored as gray levels of the sections or pixels. Image patterns of the textures are recognized on the basis of gray level variations observed before and after a mask movement, and the textures of the material are determined according to predetermined criteria.

Abstract: A fluidic flowmeter comprising a combination of an upstream fluidic element and a downstream fluidic element. One of the fluidic elements includes a jet nozzle having a smaller opening area than a jet nozzle of the other. The flowmeter further comprises a bypass passage disposed parallel to the former fluidic element and including valve means, preferably a diaphragm type governor valve. The governor valve includes a main valve member and an auxiliary valve member adapted to open by a fluid pressure upstream thereof when the main valve member is in a closed position. Each of the fluidic elements has a sensor disposed in one of return passages to detect flow rate variations therein. A flow rate indicating device is provided to derive flow rates from signals received from the sensors and indicate the flow rates.

Abstract: There is disclosed a hot gas generator comprising a compressor for supplying compressed air to a combustion chamber, a gas turbine driven by hot gas flowing from the combustion chamber and operatively connected to the compressor by means of a common rotary shaft, a blower for starting the compressor, an air pressure sensor for detecting an inlet pressure of air supplied to the compressor, a flame monitoring sensor for confirming ignition, a valve for controlling fuel gas supply to the combustion chamber, and a control mechanism. The control mechanism is operable to open the valve to a certain extent and actuate an ignition device at the same time upon a predetermined time lapse after blower actuation, to stop the ignition device and open the valve at a predetermined speed at the same time in response to an ignition confirmation signal from the flame monitoring sensor, and to stop the blower in response to a signal from the air pressure sensor indicating that the generator is in self-sustaining operation.

Abstract: A liquid sealant of the aqueous emulsion type to be delivered in foamed state into a pipeline requiring leakage repair and/or prevention. A large part of this sealant is drained from the pipeline, and the part of the sealant remaining on inner walls of the pipeline is allowed to cure. The sealant contains coagulations of weakly cohering fine particles of inorganic oxide at less than 5 percent, and the particles have diameters not exceeding 0.05.mu..

Abstract: An underground continuous length item is detected by preparing an electrically conductive wire constituted by covering a flexible metallic core wire with an outer coating layer made of a flexible and electrically conductive high polymeric organic material, positioning the electrically conductive wire under the ground along the underground continuous length item, supplying a high frequency current to the electrically conductive wire, and receiving electromagnetic waves emitted therefrom, thereby detecting the location of the underground continuous length item. Since electric current is propagated through the ground via the coating layer of the wire upon supply of high frequency power to the wire, it becomes possible to detect from the ground surface the location of the continuous length item in the event that the wire is cut.

Abstract: A method of ultrasonic flaw detection of a pipe comprises comparing ultrasonic waves passing through a test piece portion with the arithmetic means of ultrasonic waves passing through portions adjacent each side of the test portion. The comparison is made around the entire periphery of a pipe, for example, an austenic heat resisting cast steel pipe used as a hydrogen manufacturing reformer tube. This method is free from adverse influence of macrostructures unevenly distributed in the peripheral direction of the pipe, and enables a quantitative grasp of flaws in a base material and a weld of the pipe.

Abstract: A pipeline needing leakage repair and/or prevention is filled with a liquid sealant in foamed state of the aqueous emulsion type. Then an excess amount of the sealant in the center of the pipeline is drained from the pipeline, and the sealant remaining on the interior wall of the pipeline is allowed to cure wherein the sealant contains fine particles of inorganic oxide weakly adhering to one another into aggregations, said aggregations easily breaking into such fine particles that they can enter and plug fine cavities of the interior of said pipeline.

Abstract: A combustion apparatus for burning liquid fuels has a burner for atomizing and burning the liquid fuels. Oxygen enriched air, obtained by passing normal air through an oxygen permselective membrane, is supplied to the burner as air for combustion.

Abstract: The air conditioning apparatus according to the invention comprises an absorption type heat pump comprising a system including an absorber, a regenerator, a condenser and an evaporator. A mixture of lithium bromide and zinc chloride is used as an absorbent which is dissolved to form an absorbent solution into a mixed solvent having a ratio by weight of methanol to water, the ratio falling in a range between 0.1 and 0.3. Said solution is circulated through the system.

Abstract: A control device controls the air ratio in a combustion apparatus constructed so that combustion fuel supplied via a combustion fuel supplying pipe is burned with oxygen-enriched air obtained by drawing air through an oxygen permeable selective membrane by means of a vacuum pump provided at the downstream side of the oxygen permeable selective membrane and supplied via an air supplying pipe. The control device has an air flow meter and an oxygen concentration analyzer, both provided at the air supplying pipe, and a fuel flow meter provided at the combustion fuel supplying pipe. The air ratio is calculated from the values of the flow rate of of air, the oxygen concentration and flow rate of the combustion fuel. The amount of air drawn by the vacuum pump is controlled so that the actual air ratio is equal to an predetermined air ratio.