Abstract: Particularly, there is provided a liquid detection sensor in which a liquid contact area is formed integrally with a separator, and that improves detection accuracy with a small number of parts. A liquid detection sensor (1) according to the present invention includes a metal-air battery (2) formed by laminating a negative electrode sheet (3), a positive electrode sheet (5) and a separator (4) interposed between the negative electrode sheet (3) and the positive electrode sheet (5), and the separator (4) is formed wider than an area in which the positive electrode sheet (5) and the negative electrode sheet (3) overlap with the separator (4) interposed therebetween, and includes a liquid contact area (4?) exposed from at least one of the positive electrode sheet and the negative electrode sheet.

Abstract: The present disclosure provides a liquid detection sensor which has the general purpose usability and can prevent the deterioration of a metal-air battery being an electric power source even when being installed for a long term, and in which the metal-air battery being an electric power source can exhibit an excellent electric power generation performance. The liquid detection sensor has the metal-air battery having a positive electrode, a negative electrode, and an electrolytic solution-forming component positioned between the positive electrode and the negative electrode, wherein the electrolytic solution-forming component is enclosed in the inside of a resin-made bag; and a resin of the resin-made bag has dissolvability or dispersibility in a liquid being an object to be detected.

Abstract: Particularly, there is provided a liquid detection sensor in which a liquid contact area is formed integrally with a separator, and that improves detection accuracy with a small number of parts. A liquid detection sensor (1) according to the present invention includes a metal-air battery (2) formed by laminating a negative electrode sheet (3), a positive electrode sheet (5) and a separator (4) interposed between the negative electrode sheet (3) and the positive electrode sheet (5), and the separator (4) is formed wider than an area in which the positive electrode sheet (5) and the negative electrode sheet (3) overlap with the separator (4) interposed therebetween, and includes a liquid contact area (4?) exposed from at least one of the positive electrode sheet and the negative electrode sheet.

Abstract: An object of the present invention is to provide a metal-air battery capable of achieving high enough output (maximum power) to be applicable to use such as charging a cell phone. The metal-air battery of the present invention uses a metal as an active material of a negative electrode 30 and oxygen in the air as an active material of a positive electrode 20. The positive electrode 20 comprises a current collector 21 composed of a plate-like porous metal material and a conductive material layer 23 disposed on one surface side of the current collector 21. At least one surface of the current collector 21 on which the conductive material layer 23 is disposed is coated with a conductive coating material to form a coating conductive film 25.

Abstract: The present invention provides a repairing tube to be used in pipe lines such as gas conduits, water supply lines and sewer lines, chiefly those buried in the ground, for the purpose of repairing the pipe lines. More particularly, the present invention relates to a repairing tube including a rigid pipe formed of thermoplastic resin and a tubular woven fabric and a method for repairing or reinforcing a pipe line with the repairing tube. Furthermore, the present invention relates to a method for removing the repairing tube in its collapsed form out of the pipe line, for example when the repairing tube installed in the pipe line has become superannuated or it has been collapsed for some reason or other to impair the function of the pipe line and hence it is desired to reline the pipe line.

Abstract: A lining material for pipe lines, especially those buried in the ground and a process for providing pipe lines therewith are disclosed, which includes a flexible tubular film, a sheet covering the outer surface of the tubular film and a film capable of being split off covering the outer surface of the sheet, characterized in that the sheet includes a fabric and a mat of fibers of high tenacity impregnated with a thickened liquid thermohardenable resin to form a fabric-fiber-reinforced composite molding sheet having a sufficient length and a width greater than the inner circumferential length of a pipe line to be treated, and that both lateral end portions of the sheet are slidably overlapped with each other to form a tube around the tubular film, the outer circumferential length of the tube being shorter than the inner circumferential length of the pipe line.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., characterized in that low elongation high tensile strength filament yarns are used as wefts (5), (16) forming tubular textile jackets (2), (6) laid in the lining material or as the yarns (12) forming a tubular fibrous member (13) together with a tubular textile jacket (2'). This characteristic feature provides excellent performance required for lining materials for pipelines such as enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., is characterized in that low elongation high tensile strength filament yarns are used as wefts forming tubular textile jackets laid in the lining material, or as the yarns forming a tubular fibrous member together with a tubular textile jacket. This characteristic feature provides enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: A lining material for pipelines such as gas conduits, city water pipelines, sewage pipelines, and petroleum pipelines which having a structure wherein a layer of bulky yarns is fastened to either one of the inner and outer surfaces of a tubular textile jacket and an air-impervious layer made of a rubber or a synthetic resin is bonded to the other surface of the jacket, and exhibits excellent shape-maintaining property against external pressure and earthquake-resistance after being applied to the pipelines.