Abstract: A method of producing an aluminum tube covered by a layer of zinc using a continuous cold forming machine which includes the steps of: providing an extrusion die having a heating device and an inert gas-blowing tube to the cold forming machine, introducing an aluminum prime wire to the cold forming machine, extruding the prime wire through the extrusion die to form an aluminum tube while heating the die to a high temperature and blowing an inert gas across the die toward the tube to provide a high-temperature, non-oxidized aluminum tube, and flame spraying zinc powder onto the outer non-oxidized surface of the tube to cover the surface and provide an anticorrosive layer of zinc on the aluminum tube.

Abstract: A method and apparatus measures thermal conductivity of a material effected by measuring a change in the temperature of the material in contact with a heat source maintained at a predetermined temperature. A temperature change characteristic is obtained from the result of the temperature measurement, and the thermal conductivity is obtained by comparison of the temperature change characteristic and unsteady heat transfer characteristics of solid bodies previously determined in consideration of the heat transfer resistance of the interfaces. The present invention is suitable for the measurement of extensive materials, metallic materials to heat insulating materials, specifically suitable for the measurement of materials of high thermal conductivity and heterogeneous or anisotropic and is capable of accurately measuring the thermal conductivity without any special consideration on the interface heat transfer resistance at the measurement stage.

Abstract: An optical object profile measurement system utilizes a light beam to scan an object surface and a position detector which receives a light beam reflected from the object surface to obtain position data of individual scanned points on the object surface. The position data is processed to determine a profile of the object profile along the scanned points. The position detector comprises a number of light receiving elements arranged in at least two linear arrays each extending in the direction of following the light beam moving across the object surface and is divided into subdivisions having one or more of the light receiving elements. The arrays are disposed side-by-side to receive the light beam. In a first one of the arrays, the light receiving elements are designated by first values which have differing subdivisions such that the elements designated by the same first value are coupled to provide a single first output when any one of such elements detects the light beam.

Abstract: A cage has a pair of annular bodies and a plurality of columns provided at equal spacings to couple the annular bodies together to receive spherical rollers therebetween. The columns have side faces each having both axial end portions thereof formed by a composite surface having a flat surface provided outside the pitch circle of the spherical rollers and a conical surface provided inside the pitch circle. Each flat surface is inclined with respect to a plane including the axis of each spherical roller and the axis of the cage so as to come into point-to-point contact with the outer periphery of the respective spherical roller while the bearing is rotating. Each flat surface intersects each plane including the abovementioned axes along a line intersecting the axis of each spherical roller at a right angle.

Abstract: In an air bag module mounted on a steering wheel in an automobile for use, an inflater is connected to a power source through an actuating circuit to rapidly supply a high pressure gas into an air bag of the module when a dceleration of a vehicle body higher than a predetermined value is sensed, and interrupting means is provided for the purpose of preventing the malfunction of the module. The interrupting means automatically interrupts the actuating circuit in concurrence with removal of the air bag module from the steering wheel.

Abstract: A DNA sequence on which a chromosomal DNA sequence coding for human interferon-.gamma. (HuIFN-.gamma.) and having a TATA box is ligated to a sequence of a promoter. Cell cultures transformed with said DNA revealed a higher expression of HuIFN- than cell cultures transformed with a DNA which does not have such TATA box. When transformed with said DNA, cell cultures produced HuIFN-.gamma. in a serum free medium. Transformed cell cultures derived from blood cells of HuIFN-.gamma. resistant human cell-line also could produce HuIFN-.gamma..

Abstract: In a golf club for putting, the head of the club comprises a face plate having a hitting surface extending between opposite toe and heel sides of the head and a back surface extending substantially in parallel to the hitting surface. A pair of spaced rod-like bodies are fixed to the back surface of the face plate at the toe and heel sides of the head, respectively, and extend backward and in a direction perpendicular to the hitting surface of the face plate. A shaft-mounting body, for mounting the shaft thereon, is fixedly disposed between the rod-like bodies. A hosel member is attached to the top surface of said shaft-mounting body substantially at a center of the head, the hosel member extends upwardly from the shaft-mounting body to a position near a plane containing the face plate and is connected to the shaft at that position.

Abstract: A flywheel assembly comprises a first input flywheel (12); a clutch disk (14) connected to an output shaft (70) and adapted to selectively engage with the first flywheel (12); a second flywheel (26) concentrically and rotatably arranged with respect to the first flywheel (12) and having a predetermined mass; an elastic damper (28) connecting both flywheels together; a first frictional damper mechanism (50) adapted to operate between the second flywheel (26) and the clutch disc (14) only when the clutch disk (14) is engaged with the first flywheel (12); and a second frictional damper mechanism (60) arranged axially between the flywheels and adapted to operate between both flywheels (12, 26) only when the clutch disk (14) is released from the first flywheel (12).

Abstract: An adhesive sheet which comprises a support sheet and an adhesive layer containing a migratory substance, disposed on one side of the support sheet. This adhesive sheet may be applied to many types of articles and will leave behind a dye mark on the article indicating that it has been applied and subsequently removed.

Abstract: Hydraulic braking pressure device which includes a casing divided into a first cylinder portion and a second cylinder portion by a partition. A first piston is slidably fitted in the first cylinder portion and defines an input chamber between one end face thereof and the partition which is connectible to an output port of a master cylinder. The opposite end face of the first piston and the end of the first cylinder portion define a control chamber connectible with an anti-lock control mechanism. A second piston is slidable fitted in the second cylindrical portion and defines an output chamber between one end face thereof and the partition which is connectible to a wheel brake. The opposite end face of the second piston and the end of the second cylinder portion define a spring chamber in which a spring is housed biasing the second piston towards the partition. The first and second piston are fitted to both ends of a piston rod which penetrates movably and sealingly through the partition.

Abstract: A semiconductor memory device used, for example, for a graphic data storage device of a graphic display apparatus and so on, in which the data is read out not only from a target memory cell designated by an input address signal but also from one or more memory cells whose locations have predetermined relationships with the target memory cell. The semiconductor memory device comprises a plurality of memory cells, a plurality of data lines, a plurality of data buses, and a data line selecting circuit. The data line selecting circuit selectively connects a selected data line designated by an address signal to a particular data bus among the plurality of data buses and connects one or more data lines whose locations have predetermined relationships to that of the selected data line to other data buses which are different from the particular data bus. The signal of a designated data line is output to the particular data bus whichever data line is designated.

Abstract: A method of producing a catalyst for liquefaction of coal comprises heat-treating a salt or oxide of molybdenum or an alloy steel containing at least 0.3 weight percent of molybdenum in the presence of an alkali and water in a carbon monoxide atmosphere at a temperature of 220.degree. to 450.degree. C., and after water rinse and drying, reducing the same in the presence of tetralin and/or a phenol compound in a hydrogen atmosphere at a temperature of 400.degree. to 450.degree. C.