Abstract: A structure for securing a plurality of batteries used for an electric vehicle. The battery securing structure includes an inner spacer member having a lower inner spacer member and an upper inner spacer member, each of which is made of a synthetic resin such as polypropylene (PP). The lower inner spacer member has partition portions divided into separate compartments to fixedly dispose each battery in a compartment whereby all the batteries are in a state in which they have been separated from each other on all sides. The upper inner spacer member includes pressing portions for pressing and holding desired portions of the batteries, concave portions for defining spaces used for conductive wires and cooling, and partition portions divided into compartments to unmovably dispose the batteries in a state in which they have been spaced away from each other. Thus, the plurality of batteries can be reliably and firmly secured and fixed within a battery box.

Abstract: A battery box, which is suitable for use in an electric vehicle, comprises a box body and a reinforcement member. The box body accommodates therein a plurality of batteries for powering the electric vehicle and is mounted to the electric vehicle. The reinforcement member is provided with the box body and supports at least respective portions of all the batteries in the box body. The reinforcement member is mounted to the frame of the electric vehicle whereby the weight of each of the batteries is reliably supported by the reinforcement member on the vehicle frame. The weight is reduced and yet the rigidity of the battery box is improved.

Abstract: To ensure a well-oriented crystal structure, there is provided a process of producing an oxide superconductor of a Y--Ba--Cu--O system with a composition having an atomic ratio Y:Ba:Cu of 1.0-2.0:2.0-2.5:3.0-3.5, the process comprising the steps of: preparing a semimelt including solid and liquid phases and consisting of Y, Ba, Cu and O in the atomic ratio; and solidifying the semimelt to form the oxide superconductor by so controlling a moving speed of a solidification front to have two components of different values in two perpendicularly intersecting directions.

Abstract: A superconducting bearing unit compring a permanent magnet mounted to a rotating shaft and a superconducting body mounted on the inner periphery of a housing surrounding the shaft, the superconducting member being adapted to be cooled with the rotating shaft moved upwards until it attains a superconducting condition, so that the rotating shaft is supported in use in a balanced condition between the weight of the rotating shaft, etc. and a pinning force caused by the permanent magnet and the superconducting member.

Abstract: The present invention relates to a method for preparing a pitch fluoride, which comprises reacting pitch with fluorine in a fluorine type inert medium.

Abstract: A water and oil repellent composition containing, as an essential component, non-film-forming fine solid particles having a low surface tension and having a fluorine content of at least 30% by weight.

Abstract: Disclosed is a novel fluorocarbon comprising carbon atoms and fluorine atoms and having no double bond, the atomic ratio of fluorine to carbon atoms being 1.50 to 1.93, which exhibits a liquid state at room temperature. The liquid fluorocarbon has excellent water- and oil-repellent properties and can advantageously be used, for example, not only as a water- and oil-repellent but also as an inert liquid, a heat transfer agent and a vapor phase soldering liquid in various fields, especially in the electronic industry. The liquid fluorocarbon can be obtained directly from a pitch or from a pitch fluoride which can be obtained by direct fluorination of a pitch.

Abstract: A carbon fluoride comprising carbon atoms and fluorine atoms and having a structure in which layers containing fluorinated condensed cyclohexane rings are stacked to form a packing structure, the atomic ratio of fluorine to carbon atoms being 0.5 to 1.8, the carbon fluoride exhibiting a powder X-ray diffraction pattern in which there are peaks respectively at about 13.degree. (2.theta.) and at about 40.degree. (2.theta.) and no peak on the low side of diffraction angle relative to 13.degree. (2.theta.) and exhibiting a spectrum of electron spectroscopy for chemical analysis in which there are peaks respectively due to a monofluorocarbon group and due to a difluorocarbon group, the intensity ratio of the peak due to the difluorocarbon group to the peak due to the monofluorocarbon group being 0.15 to 1.5. The carbon fluoride has a unique property that it is capable of forming a film by vacuum deposition. The carbon fluoride may be produced by the direct fluorination of a pitch or meso-carbon microbeads.

Abstract: An improved aqueous coating composition for the production of cast coated paper is disclosed. The pigment component of the coating contains at least 5% by weight of cubic calcium carbonate having a mean particle size of 0.1 to 1.0 micron. When this coating composition is used the operating speed of the cast coating process is remarkably improved and a cast coated paper having excellent whiteness, gloss and printability is obtained.