Abstract: There is disclosed a method and apparatus for producing an optical fiber which is capable of producing the optical fiber having a high reliability by directly wiping the surface of the optical fiber with cleaning means for positively removing foreign materials adhered to or precipitated on the surface of the optical fiber and in which its facility is simple in structure and easy to maintain it. A cleaning member (11) is disposed on an optical fiber moving path. The surface of moving optical fiber (20) is cleaned by bringing the optical fiber (20) into a physical contact with the cleaning member (11). The cleaning member (11) can be formed of a porous or mesh member. The mesh member is formed of fiber sheets which are formed by knitting fiber threads. A plurality of the fiber sheets are laminated to provide a given lamination thickness for the cleaning length of the optical fiber (20).

Abstract: An acoustic logging tool sleeve with a preferably discontinuous, alternating structure that is acoustically opaque in some zones, and acoustically transparent in others. The sleeve may be modular, with several stages connected together. The multiple stages provide a sleeve that may be useful with a variety of borehole logging tools to reduce or eliminate the transmission of noise to the receiving elements.

Abstract: It is the object of the present invention to provide a gas generator that can provide a controlled expansion and inflation of the airbag with improved reliability. The gas generator D of the present invention is so structured that gas generating agents 7 packed in combustion chambers 3, 4 can be burnt by two ignitors 8, 9 independently of each other, wherein the ignitors 8, 9 electrically ignite ignition agents 26 by use of bridge wires 24 for generating heat by electrifying, and resistance values thereof are differentiated from each other.

Abstract: An acoustic transducer includes a polarized piezoelectric shell having a spiral-shaped surface. The acoustic transducer serves as a receiver or a transmitter. In one embodiment, the acoustic transducer includes a solid spiral shell having outer and inner spiral-shaped surfaces, and the shell is polarized, wired and packaged to operate in hydrophone-mode. In another embodiment, the acoustic transducer includes a shell defining an exterior spiral-shaped surface and a spiral slot; and the slot defines a closed cavity with an interior spiral-shaped surface. In a preferred bender-type receiver embodiment, the shell is polarized, wired, and packaged to operate in bender mode for maximum sensitivity and best low-frequency performance.

Abstract: A logging tool having a tool body, which can be positioned in a fluid-filled borehole, including a receiver section and a dipole transmitter; wherein the dipole transmitter includes a transducer with a shell having a reaction mass and a motor located therein, the motor operatively connecting the shell and the reaction mass such that only an outer surface of the shell is in contact with the fluid in the borehole. This new type of dipole source for well logging involves shaking all or part (axially) of a dipole tool body to produce a pure, broadband acoustic dipole signal while at the same time coupling as little energy as possible into the tool body. Important variations on this idea include a linear phased array of shaker sources, and active cancellation of tool borne noise.

Abstract: An acoustic transducer includes a polarized piezoelectric shell having a spiral-shaped surface. The acoustic transducer serves as a receiver or a transmitter.

Abstract: A circuit breaker includes, a cylindrical portion having a gunpowder and a exploding unit for exploding the gunpowder by application of electric power to the gunpowder, the cylindrical portion being provided with an opening at at least one end; a base material securing the cylindrical portion, at least the surface of which is made of insulating material; a conductor fixed to the base material and having a break portion located at a position opposite to the opening of the cylindrical portion, the break portion being broken by explosive force of the gunpowder; a first metallic cover portion covering the cylindrical portion and the break portion; and a second metallic cover portion covering the base material from an opposite side to the cylindrical portion, wherein the first and second cover portions are fixed to the base material by directly connecting the first and second cover portions each other.

Abstract: Entry of molten lead into the space between the electrode plates from the gap between welding jig 12 and electrode plate lead 6 is prevented by a construction of pouring nozzle 17 in which the flow speed and temperature of the molten lead when molten lead is poured into the recess of the welding jig 12 are lowered. Also, admixture of oxide and/or scum is eliminated by discharging the molten lead from the bottom of reservoir 36. Furthermore, reliable joining of strap 2, electrode plate leads 6 and pillar electrode 4 is achieved by prioritising melting of electrode plate leads 6, pillar electrode 4 and the vicinity thereof by plasma welding.

Abstract: A radiation computed tomography apparatus of this invention includes a couch, a top board which carries the patient and is slidably arranged on the couch, a gantry which has an opening and acquires projection data of a patient by guiding the patient carried on the top board into the opening, reconstruction section for reconstructing the tomographic image of the patient by reconstructing the projection data acquired by the gantry, and adjusting section, arranged on or near the gantry, for adjusting the photographing condition of the patient for obtaining a predetermined tomographic image of the patient.

Abstract: A shaft assembly in which a cross-groove universal joint is mounted on each of the two end portions of a shaft. In this cross-groove universal joint, an inner race formed in the outer circumference with ball grooves inclined alternately in opposite directions with respect to the axial direction and an outer race formed in the inner circumference with ball grooves oriented to intersect the former ball grooves are concentrically fitted. Balls are arranged at the intersections between the ball grooves of the inner race and the ball grooves of the outer race, as confronting each other. The balls are retained by a cage arranged between the inner race and the outer race.

Abstract: A radiation computed tomography apparatus of this invention includes a couch, a top board which carries the patient and is slidably arranged on the couch, a gantry which has an opening and acquires projection data of a patient by guiding the patient carried on the top board into the opening, reconstruction section for reconstructing the tomographic image of the patient by reconstructing the projection data acquired by the gantry, and adjusting section, arranged on or near the gantry, for adjusting the photographing condition of the patient for obtaining a predetermined tomographic image of the patient.

Abstract: A radiation computed tomography apparatus of this invention includes a couch, a top board which carries the patient and is slidably arranged on the couch, a gantry which has an opening and acquires projection data of a patient by guiding the patient carried on the top board into the opening, reconstruction section for reconstructing the tomographic image of the patient by reconstructing the projection data acquired by the gantry, and adjusting section, arranged on or near the gantry, for adjusting the photographing condition of the patient for obtaining a predetermined tomographic image of the patient.

Abstract: Method for assaying nucleic acids and proteins employing no radiosotope labeling, which is suitable for data storage and allows to carry out the detection efficiently and high sensitivity. The sample selectable from the group of nucleic acids, proteins, and other chemical compounds is adhered on a nylon membrane filter to be bound to a phosphatase. Then the phosphatase is reacted with an anthracene derivative phosphate followed by irradiating the reaction product with ultraviolet light to detect a fluorescence emitted therefrom.

Abstract: A final drive and differential unit for a motor vehicle comprises a differential carrier integrally formed with a cylindrical support structure, a differential gear unit rotatably mounted within the carrier and provided thereon with a ring gear, and a drive pinion shaft supported by a pair of axially spaced outside and inside bearings within the support structure, the pinion shaft extending outwardly through an annular oil seal member mounted within the outer end portion of the support structure and being provided at its inner end with a pinion in mesh with the ring gear.

Abstract: Outside of the oil seal attached to the side gear shaft position in the final reduction gear apparatus, a guide member is installed which has an inner diameter slightly larger than that of the main lip of the oil seal and has a guide surface concentric to the main lip; the side gear shaft is pushed along the guide surface of said guide member, whereby the interference between the side gear shaft and the main lip of the oil seal can be minimized, thus preventing damage to the main lip and assuring the normal function of the oil seal to prevent oil leakage; and the assembling of the side gear shaft is facilitated through exact and easy centering of the side gear shaft.

Abstract: In a final drive and differential unit comprising a ring gear integral with a differential gear unit rotatably mounted within a carrier, and a drive pinion shaft supported by a pair of axially spaced bearings within a cylindrical support structure of the carrier, the shaft extends outwardly through an oil seal member mounted within an outer end portion of the support structure and is provided at its inner end with a drive pinion in mesh with the ring gear. The support structure is formed at one side thereof with an enlarged portion formed therein with an oil supply passage opening at its one end into the carrier at the same side as the ring gear and is formed at the other side thereof with another enlarged portion formed therein with an oil return passage opening at its opposite ends into the carrier and into a first annular space between the oil seal member and the bearing.

Abstract: A lubricating structure of a differential carrier includes a drive pinion shaft attaching portion, an oil supply hole and an oil return hole extended respectively along and provided on both sides of the attaching portion and a ring gear attaching portion formed to extend the axis of a ring gear in the direction crossing these holes. A gap between a portion located on the lower side of the oil supply hole in a member surrounding the ring gear attaching portion and the ring gear disposed in the attaching portion is formed so as to be larger than that between a portion located on the upper side of the oil supply hole in the member and the ring gear. The oil supply hole is formed to give an inclination downward in front when the differential carrier is mounted on a car body.

Abstract: A bottle handling apparatus in which bottles being fed continuously to the apparatus are ejected from a feed device into groups of a given size and are loaded as groups into a series of bottle holders on a bottle-handling conveyor of the apparatus by bottle insertion means arranged at a plurality of stages along the conveyor. The different stages of the insertion means causes the bottle groups to be regularly inserted into the bottle holders in a alternate or regularly spaced sequence. The delivery side of the bottle handling conveyor is provided with bottle removal means arranged at a plurality of stages along the feed direction of the conveyor.