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    • 9. 发明专利
    • INSTALLATION METHOD OF PERMEABLE L-SHAPED SIDE DITCH
    • JP2002276012A
    • 2002-09-25
    • JP2001118874
    • 2001-03-14
    • MATSUZAKI HIROSHI
    • MATSUZAKI HIROSHI
    • E03F1/00E03F5/04
    • PROBLEM TO BE SOLVED: To solve problems in a rainwater diluting method and a waste water treatment method wherein a large quantity of rainwater cannot be treated by a side ditch, and the shoulder turns into a river since a permeating quantity is limited in a permeating method by a conventional side ditch, and problems in a environmental preservation method and an environmental consideration- maintenance method for supplying sufficient water to roadside trees, and returning the rainwater underground while purifying the rainwater. SOLUTION: In this installing construction method of a permeable L-shaped side ditch, a rainwater flowing-out permeating cylinder is arranged under the permeable L-shaped side ditch for forming rainwater inflow holes having a shape such as a round shape or a rectangular shape in the L-shaped side ditch. An excellently permeable object such as gravel is inserted into the permeating cylinder. A large number of holes are arranged in an outer peripheral part. The rainwater is diffused and permeated from these holes and a permeating cylinder lower part, and is returned underground while purifying the rainwater to treat the rainwater.
    • 10. 发明专利
    • MAGNETIC FIELD GENERATING DEVICE
    • JPS6481207A
    • 1989-03-27
    • JP23943687
    • 1987-09-22
    • SHIOMI KAKUICHIMATSUZAKI HIROSHIHIKI YOSHIOOTSUKA MIEKO
    • SHIOMI KAKUICHIMATSUZAKI HIROSHIHIKI YOSHIOOTSUKA MIEKO
    • H01F6/00
    • PURPOSE:To realize a magnetic field variation high in its ratio without accompanying an unstable transient phenomenon, by using a plurality of superconductive coils and superconductive switches to realize permanent current states dissimilar respectively in each of the coils. CONSTITUTION:This device is composed of two superconductive coils assembled in coaxial shapes. Both the superconductive switches 3 and 4 are made to be on normal conductive states, and excitation currents are applied to the superconductive coils 1 and 2 so that an initial magnetic field is generated in the center of the device to make the superconductive switch 3 become on a superconductive state and a closed circuit is composed together with the superconductive coil 1 to stabilize and maintain the central magnetic field. The excitation current is changed to correspond with the desired intensity of a magnetic field after the variation. When the superconductive switch 4 is also made to be on the superconductive state so that the magnetic field generation device is electrically disconnected to be on a stationary state of a permanent current mode and that the superconductive switch 3 is made to be on the normal conductive state, currents flowing in the respective coils change according to their time constants tau and the magnetic field in the center of the device varies at the same time.