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    • 1. 发明专利
    • SMALL HEAD HYDRAULIC POWER GENERATION METHOD UTILIZING DOWNSTREAM FLOW VELOCITY
    • JPH05126026A
    • 1993-05-21
    • JP28824991
    • 1991-08-14
    • YASUDA TOSHITAKAKURODA SHIGEHARU
    • YASUDA TOSHITAKAKURODA SHIGEHARU
    • F03B17/06H02K7/18
    • PURPOSE:To obtain a hydraulic power generation method which can utilize small heads of dams for irrigation water intakes of rivers, reservoirs, and lakes for flood control and for water level regulation, which heads could not be utilized for hydraulic power generation. CONSTITUTION:In a pressure pipe 1 which has a water intake 2 and a water suction part 3, in a dam D which has a small head and an overflow, the flow velocity at the upstream part F1 is made as V1, the flow velocity at the downstream part F2 is made as V2, the section area at the part where the water at the upstream part F1 passes at the velocity V1 is made as the effective water intake area S1, and the section area at the part where the water in the pressure pipe 1 passes at the velocity V2 and sucked into the waterflow at the downstream side F2 is made as the effective water intake area S2. In this case, a stable power generating condition is S1XV1 S2XV2. A reaction water turbine 4 is provided in the pressure pipe 1, a power generator 5 provided at an adequate position inside or outside the pressure pipe 1 is connected to the reaction water turbine 4, the water at the upstream side is let flow in and flow down through the pressure pipe 1, the potential energy of the height H between the water level at the upstream side and the suction part 3 is changed to a kinetic energy to rotate the reaction water turbine and the power generator so as to generate a power, and the water is sucked out by the pressure energy and the kinetic energy of the water flow at the downstream side near the suction part 3.
    • 2. 发明专利
    • HYDRAULIC POWER GENERATION IN SMALL FLOW VELOCITY AND LARGE QUANTITY FLOWING WATER
    • JPH05141340A
    • 1993-06-08
    • JP26558991
    • 1991-07-10
    • YASUDA TOSHITAKAKURODA SHIGEHARU
    • YASUDA TOSHITAKAKURODA SHIGEHARU
    • F03B17/06H02K7/18
    • PURPOSE:To facilitate hydraulic power generation in small flow velocity and large quantity flowing water in which a water quantity is abundant and a depth of water is large like in a large river or an ocean current by carrying out the hydraulic power generation while combining the first energy system water in the vicinity of the water surface of the flowing water and the second energy system water in the vicinity of the water bottom of the flowing water with each other. CONSTITUTION:In flowing water, water having kinetic energy and potential energy flowed into a pressure pipe 1 from the vicinity of the water surface of the flowing water F, that is, the water in the first energy system and water having kinetic energy and pressure energy in the vicinity of the water bottom of the flowing water F, that is, the water in the second energy system are combined with each other, so that hydraulic power generation is carried out. A water intake section 2 to take the first energy system water into the pressure pipe 1 is provided in the vicinity of the water surface of the flowing water, and a water sucking section 3 to suck out the second energy system water into the flowing water from inside of the pressure pipe 1 is provided in the vicinity of the water bottom of the flowing water. A water wheel 4 is also provided inside of the pressure pipe 1, and a generator is rotated by this water wheel, so that power generation can be carried out. Thereby, while using an underwater fall in a large river, a tidal current or an ocean current in which a water quantity is abundant and a depth of water is large, the hydraulic power generation becomes possible.
    • 4. 发明专利
    • SCAFFOLD PLANK
    • CA1259364A
    • 1989-09-12
    • CA424868
    • 1983-03-30
    • KURODA SHIGEHARU
    • KURODA SHIGEHARU
    • E04G5/08
    • A novel scaffold plank is provided herein. It includes an elongated rectangular tubing means, such elongated rectangular tubing means providing a plurality of rectangular passages, each of which extend longitudinally of such elongated rectangular tubing means, such rectangular passages being transversely spaced from each other; at least one layer of covering member enclosing such elongated rectangular tubing means; and a respective end member mounted to each of the two opposite ends of such elongated rectangular tubing means, each of the end members including a plurality of plug portions which are substantially rectangular in cross-sec-tion, the plurality of plug portions being transversely aligned in spaced-apart relation and inwardly projecting into mating engagement with such plurality of respective rectangular passages, each of the end members further including inner engaging wall means held in abutment with a corresponding end of such elongated rectangular tubing means.
    • 7. 发明专利
    • ENDLESS BAND-SHAPED MOLD AND CONTINUOUS RECESSION AND PROTRUSION MOLDING MACHINE EQUIPPED THEREWITH
    • JPH0338323A
    • 1991-02-19
    • JP17536189
    • 1989-07-05
    • KURODA SHIGEHARU
    • KURODA SHIGEHARU
    • B29C59/04
    • PURPOSE:To form efficiently recessions and protrusions with exact configurations by connecting a plurality of rod-shaped press mold units arranged in parallel via connecting means, and forming protrusion-formed parts on the press surface side parts between the rod-shaped press mold units adjacent to each other. CONSTITUTION:A chain 11 is made such that the pair 12a of attaching rinks attached with rod-shaped press mold units 12 and the pair of connecting rinks 12b connecting the attaching rinks 12a are connected alternately via connecting shafts 12c. Each connecting shaft 12c is rotatably fitted with rollers 12c which slide to guiding materials 14. The pair of the attaching rinks 12a are welded to the attaching plates 27 of the press mold units 12 and to the attaching plates 27, press mold parts 28 is fixed by bolts 29. In both corners at the side part of pressing surface B of the press mold parts 28, recession parts 30 are provided respectively. And, between adjacent press mold parts 28, 28, a certain configuration recession grooves A are formed which correspond to the protrusion parts 32 of the main body of a resin molding 31 which should be formed by both recession parts 30, 30.
    • 9. 发明专利
    • METHOD OF MOLDING BOARDLIKE RESIN
    • JPS62238724A
    • 1987-10-19
    • JP8147886
    • 1986-04-09
    • KURODA SHIGEHARU
    • KURODA SHIGEHARU
    • B29C47/00B29C59/00B29C59/02B29C59/04B29C69/00B29L7/00
    • PURPOSE:To mold boardlike resin with a large number of intermittent protrusions in arbitrary length, by pressing beads of the boardlike resin on which the continuous protruding line has been formed in a longitudinal direction by an extrusion molding machine by an unevenness molding machine during an uncured state of the boardlike resin. CONSTITUTION:A core plate 1 is inserted into an extrusion molding equipment 6 by a pressing-in roller 5. Vinyl chloride 2 in a hopper 7 is softened and melted within a barrel 8, with which the core plate 1 is coated. When the core plate 1 is extruded through the extrusion molding equipment 6, a bead 9 is formed continuously by a die 10 in a longitudinal direction on the top 3a of boardlike resin 3 obtained by coating the core plate 1 with the vinyl chloride 2. The boardlike resin 3 extruded through the extrusion molding machine 6 is conveyed to an unevenness molding machine 11 during uncured state of the same and receives vertical pressure by an upper rubber belt 12 and lower rubber belt 13 of the unevenness molding machine 11. In this instance, a protrusion 12a of the upper rubber belt 12 presses the beads 9 at every other constant intervals and forms a protrusion 4. With this construction, the boardlike resin having a large number of the protrusions on the top or the top and bottom can be molded in arbitrary length.