Abstract: A lightweight fire extinguisher is disclosed. In one embodiment, the fire extinguisher, which is portable, includes a press-source fluid container capable of retaining compressed air; extinguishant containers capable of retaining extinguishant; a pressure-source fluid tube connected to the pressure-source fluid container and the extinguishant containers, for leading the compressed air retained in the pressure-source container to the extinguishant containers; a pressure reducing valve intervening in the pressure-source fluid tube, for reducing pressure of the compressed air flowing down the pressure-source fluid tube; discharge device capable of discharging the extinguishant retained in the extinguishant containers; and an extinguishant tube connected to the extinguishant containers and the discharge device, for leading the extinguishant retained in the extinguishant containers to the discharge device.

Abstract: A lightweight fire extinguisher is disclosed. In one embodiment, the fire extinguisher, which is portable, includes a press-source fluid container capable of retaining compressed air; extinguishant containers capable of retaining extinguishant; a pressure-source fluid tube connected to the pressure-source fluid container and the extinguishant containers, for leading the compressed air retained in the pressure-source container to the extinguishant containers; a pressure reducing valve intervening in the pressure-source fluid tube, for reducing pressure of the compressed air flowing down the pressure-source fluid tube; discharge device capable of discharging the extinguishant retained in the extinguishant containers; and an extinguishant tube connected to the extinguishant containers and the discharge device, for leading the extinguishant retained in the extinguishant containers to the discharge device.

Abstract: A rapid opening pressure regulating valve reduced in size and having improved flow rate characteristics, a fire extinguishing apparatus using the same, a high-pressure gas cylinder apparatus, and an apparatus rapidly supplying a fluid. When the rapid opening pressure regulating valve is assembled, a valve element member body (22) is inserted into a body (1), and a valve element (21) is inserted into an inlet nozzle part (11) from the inlet (11a) thereof and fixed to the lower end of the valve element member body (22). The valve element (21) is fixed to the valve element member body (22) by, for example, threading the inner circumferential surface of the valve element (21) and the corresponding lower end outer peripheral surface of the valve element member body (22) and screwing the lower end of the valve element body (22) into the valve element (21).

Abstract: A rapid opening pressure regulating valve reduced in size and having improved flow rate characteristics, a fire extinguishing apparatus using the same, a high-pressure gas cylinder apparatus, and an apparatus rapidly supplying a fluid. When the rapid opening pressure regulating valve is assembled, a valve element member body (22) is inserted into a body (1), and a valve element (21) is inserted into an inlet nozzle part (11) from the inlet (11a) thereof and fixed to the lower end of the valve element member body (22). The valve element (21) is fixed to the valve element member body (22) by, for example, threading the inner circumferential surface of the valve element (21) and the corresponding lower end outer peripheral surface of the valve element member body (22) and screwing the lower end of the valve element body (22) into the valve element (21).

Abstract: A DNA encoding at least part of a hyaluronan synthase of human origin, particularly encoding the whole or a part of an amino acid sequence shown by SEQ ID NO: 4. A polypeptide of the hyaluronan synthase of human origin, which is encoded by the DNA, may have a substitution, deletion or insertion of one or more amino acid residues that does not substantially lower an activity of synthesizing hyaluronan. A polypeptide of the hyaluronan synthase of human origin or a part thereof encoded by the DNA is also provided.