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    • 46. 发明授权
    • Metal continuously melting and retaining furnace
    • 金属连续熔化和保温炉
    • US4989841A
    • 1991-02-05
    • US338837
    • 1989-04-14
    • Kenzo TokumasuKatsuo TakiRyotatsu OotsukaMasaaki NakamuraTatsuo Akino
    • Kenzo TokumasuKatsuo TakiRyotatsu OotsukaMasaaki NakamuraTatsuo Akino
    • B22D45/00F27B3/04F27D3/16F27D21/00F27D27/00F27D99/00
    • F27D27/00F27B3/045F27D2099/0013F27D21/0014F27D3/16Y10S266/90Y10S266/901
    • A metal continuously melting and retaining furnace including a retaining chamber which retains therein a molten metal fed from a melting chamber, a ladling chamber from which the molten metal is ladled out, and a treating chamber between the retaining and ladling chambers and having means of producing bubbles of a molten metal-refining gas and means of stirring the molten metal. A molten metal inlet port between the retaining chamber and the treating chamber and a molten metal outlet port between the treating chamber and the ladling chamber are disposed so as not to face directly to each other. In addition, a bubble baffle plate stands on the bottom surface of the treating chamber near the molten metal outlet port so as to oppose thereto. This makes it possible to provide a molten metal with a good yield, which is refined to a higher degree and is most suitable for producing a high quality thin cast product by casting. This also inhibits molten metal refining gas bubbles with inclusions entrained therein from flowing into the molten metal outlet port to reliably prevent reduction in the degree of refining the molten metal in the ladling chamber.
    • 一种金属连续熔化和保持炉,其包括保持室,其中保留有从熔化室供给的熔融金属,熔融金属从其中排出的熔化室,以及在保持室和填充室之间的处理室,并且具有产生 熔融金属精炼气体的气泡和搅拌熔融金属的装置。 在保持室和处理室之间的熔融金属入口和处理室和装载室之间的熔融金属出口设置成不面对彼此。 此外,气泡挡板位于熔融金属出口附近的处理室的底面上,以与之对置。 这使得可以提供具有良好产率的熔融金属,其以更高的程度被精炼,并且最适合于通过铸造生产高质量的薄铸造产品。 这也抑制了夹带在其中的夹杂物流入熔融金属出口的熔融金属精炼气泡,以可靠地防止熔化金属在熔化室中的精炼程度的降低。
    • 50. 发明授权
    • String construction for athletic rackets
    • 运动球拍弦乐
    • US4306410A
    • 1981-12-22
    • US205911
    • 1980-11-12
    • Masaaki NakamuraHisaaki Ueba
    • Masaaki NakamuraHisaaki Ueba
    • A63B51/02D02G3/38D02G3/44D02G3/34D02G3/36
    • A63B51/02D02G3/38D02G3/444A63B2051/026Y10T428/2936
    • A string construction for athletic rackets which can be frictionally engaged with a tennis ball or a badminton shuttlecock very well upon hitting it and which can be uniformly stretched on the athletic racket frame without being twisted, comprises a string-like core made of thermoplastic resin material and a tubular netlike structure made of thermoplastic resin material, the tubular netlike structure netting over and being secured to an outer circumference of the core, wherein the netlike structure includes a plurality of thread-like members forming a plurality of nodes at intersections thereof, all the thread-like members forming each node being integral with each other at each node, and projecting from the outer circumference of the core to a height substantially equal to each other at each node.
    • 用于运动球拍的弦结构,其可以非常好地与网球或羽毛球乒乓球摩擦接合,并且可以在运动球拍框架上均匀地拉伸而不扭曲,包括由热塑性树脂材料制成的弦状芯 以及由热塑性树脂材料制成的管状网状结构,所述管状网状结构网结合并固定到所述芯的外周,其中所述网状结构包括在其交叉处形成多个节点的多个螺纹状构件,全部 形成每个节点的线状构件在每个节点处彼此成一体,并且在每个节点处从芯的外圆周突出到彼此大致相等的高度。