Abstract: A surface-mount type ceramic capacitor particularly suitable for use in an intermediate to high tension circuit is disclosed, wherein lead terminals are spaced from a dielectric ceramic substrate except for a portion joined with electrodes. With this spaced arrangement, the ceramic capacitor has a high electric breakdown strength and an improved heat-resisting property and, hence, is capable of operating reliably over a long period of use.

Abstract: A flat type dielectric filter comprises a substantially U-shaped strip line formed such that each center frequency of spurious output deviates from each odd number frequency times the center frequency of the dielectric filter. That is, it comprises a first portion so curved to form an open loop and two second portions formed to have a larger width than the first portion, each of the second portions being provided to an end of the first portion such that each extends in the opposite direction to the other. In this filter, input/output electrodes confronting ends of U-shaped strip line can be formed on a different layer from the layer where the resonator is formed in order to reduce its size. Reduction of size can be obtained by vertically folding the U-shaped strip line extending horizontally. Terminals of this filter formed on the side surface have a first layer formed on the side surface and a second layer formed on the first layer.

Abstract: The optical fiber cutting apparatus are constituted by a combination of a cutting apparatus body in which two clamps and, a scoring blade and a pushing member are provided on predetermined positions on a base and a set table having a guide groove on its top is provided at the rear of these clamps and, and plural types of adapters, in which first guides and second guides having different sizes and shapes in accordance with the sizes and shapes of single core optical fibers in use are mounted on respective plates that can detachably be fit in the guide groove. With the above design, the desired adapter having the proper guides and can be selected and used in accordance with the size and shape of a single core fiber in use, so that the cutting apparatus can be applied to optical fibers with different sizes and shapes.

Abstract: The optical fiber cutting apparatus are constituted by a combination of a cutting apparatus body in which two clamps and, a scoring blade and a pushing member are provided on predetermined positions on a base and a set table having a guide groove on its top is provided at the rear of these clamps and, and plural types of adapters, in which first guides and second guides having different sizes and shapes in accordance with the sizes and shapes of single core optical fibers in use are mounted on respective plates that can detachably be fit in the guide groove. With the above design, the desired adapted having the proper guides and can be selected and used in accordance with the size and shape of a single core fiber in use, so that the cutting apparatus can be applied to optical fibers with different sizes and shapes.

Abstract: A thrust bearing having a spiral element and a flat element is provided wherein bothy elements are arranged so as to be rotatable relative to each other and the spiral element is made of ceramic having a pattern of spiral grooves on the surface thereof opposing the flat element. The spiral grooves are formed by a shot-blasting process applied through a resin mask having a spiral pattern, the depth of the grooves being kept within the range between 3 .mu.m and 50 .mu.m.

Abstract: A method for providing a polyolefin resin substrate with an adhesive coating having high adhesiveness and thermal resistance comprising the following steps:1. coating the surface of said polyolefin substrate with a primer film having at least 2 hydroxy groups, and2. coating said primer film with a molten layer of moisture setting hot melt urethane adhesive composition comprising a urethane prepolymer containing at least 2 NCO radicals.

Abstract: The optical fiber cutting apparatus are constituted by a combination of a cutting apparatus body in which two clamps and, a scoring blade and a pushing member are provided on predetermined positions on a base and a set table having a guide groove on its top is provided at the rear of these clamps and, and plural types of adapters, in which first guides and second guides having different sizes and shapes in accordance with the sizes and shapes of single core optical fibers in use are mounted on respective plates tht can detachably be fit in the guide groove. With the above design, the desired adapter having the proper guides and can be selected and used in accordance with the size and shape of a single core fiber in use, so that the cutting apparatus can be applied to optical fibers with different sizes and shapes.

Abstract: Austenitic cast iron has excellent corrosion resisting properties and has been preferentially used in machines or machine parts intended for handling corrosive fluids such as seawater. Cases, however, have been reported of machines or machine parts made of austenitic cast iron failing after they had been put to prolonged service at relatively low temperatures. The present inventors have located stress corrosion cracking at the cause of this failure.In accordance with the present invention, methods of using salt water resisting machines or machine parts made of austenitic cast iron that has graphite in the form of spheroids or nodules and which comprises by weight %: C.ltoreq.3.0, Si=1.0-3.0, Mn.ltoreq.1.5, P.ltoreq.0.08, Ni>24-28%, Cr.ltoreq.5.5 and the balance being Fe to minimize stress corrosion are provided.

Abstract: An electrically powered apparatus is disclosed in which an axial end surface of a rotor and an axis end surface of a stator are arranged to be sliding surfaces for effecting relative sliding motion therebetween, one of the sliding surfaces being provided with grooves adapted to generate fluid dynamic pressure upon relative rotation of said surfaces.

Abstract: Emulsion type rust-preventive baking composition which comprises a polymer emulsion such as an aqueous acrylic resin emulsion and a heat-fusible organic filler having a melting or softening point within the range of 40.degree.-250.degree. C. which is higher by at least 10.degree. C. than the lowest film-forming temperature of the polymer emulsion, as incorporated in the polymer emulsion. When the emulsion type rust-preventive baking composition obtained by the mixture is coated on reinforcing steel rods or the like treatment targests and baked, the heat-fusible organic filler melts and fills pores in the rust-preventive coat film, whereby the coat film is rendered close and compact to produce excellent rust-preventive effect.

Abstract: A pump including an impeller having a magnet or a second conductor therein, the impeller being adapted to be directly rotated by virtue of magnetic fields of stator coils. The impeller is rotated within a casing in close proximity thereto via ceramic bearing members, one bearing member having spiral grooves on its slide surface. The ceramic bearing members constitute a dynamic pressure bearing means.

Abstract: A thrust bearing contructed to comprise a pair of disc elements one of which is arranged to rotate and the other of which is kept stationary, the surface of the rotating side opposing the stationary element being provided with a pattern of spiral grooves which are non-reflective while the remaining lands of the pattern are reflective so that a pulsed light beam is reflected from the pattern when a light beam is directed onto the rotating pattern through a hole provided in the stationary element, the reflected light pulses being utilized for determining the rotational speed of the element under rotation.

Abstract: Method and apparatus of controlling and positioning a fluid actuator by supplying pressurized fluid to right and left actuating chambers of the actuator through an on-off control valves. To drive and position the actuator rapidly and accurately, the actuator can be driven at a higher speed by an initial driving force until it reaches near the desired position and continuously moved at a low speed by gradually increasing the fluid pressure to be supplied to the right and left actuating chambers of the actuator. The initial driving force in the high-speed range becomes maximum when the pressure is applied to one of the right and left actuating chambers while at the same time the other actuating chamber is exhausted. In the low-speed range and near the target position, the one actuating chamber is continuously supplied with the pressure while at the same time the other actuating chamber is gradually closed.

Abstract: A magnet coupling, in which a ceramic isolating plate 5 is provided between a driven magnet 4 and a drive-side magnet 3 and ceramic bearing members 13, 14 are placed between the respective sides of the isolating plate 5 and the driven magnet 4 and the drive-side magnet 3, whereby the gap between the drive-side and load-side is minimized.

Abstract: A novel thrust bearing is provided in which a spiral element having a disc shape is loosely interposed between a pair of flat elements one of which is rotatable and the other of which is stationary, the spiral element having a spiral groove pattern on each of the opposite surfaces of the disc with the patterns on the respective surfaces reverse in relation to each other in their spiral direction.

Abstract: A thrust bearing having a spiral element and a flat element is provided wherein both elements are arranged so as to be rotatable relative to each other and the spiral element is made completely of ceramics in a disk form having a pattern of spiral grooves on the surface thereof that opposes the flat element. The spiral grooves are formed by a shot-blasting process applied through a resin mask having a spiral pattern, the depth of the grooves being kept within a range of between 3 .mu.m and 50 .mu.m and the ratio of the outer diameter of the spiral element to the thickness of the spiral element being arranged to be aout 10: at least 0.4 or over.