Trackway for overhead transportation system
    2.
    发明授权
    Trackway for overhead transportation system 失效
    架空运输系统轨道

    公开(公告)号:US3938445A

    公开(公告)日:1976-02-17

    申请号:US529731

    申请日:1974-12-05

    申请人: James A. Hughes

    发明人: James A. Hughes

    CPC分类号: B61B13/08 B61C11/06 B61C7/00

    摘要: An overhead transportation system comprising for a depending and longitudinally traversible vehicle an overhead trackway as a pair of longitudinally slottedly vented tubular conduits maintained above the earth's surface with a series of pillars and having an overlying protective shield. The vehicle powering means comprises a pair of co-traversible jet engines situated within respective conduits and connected to the underlying vehicle with a dual-arms hangar means along which arms the engines' fuel-line extends. The trackway is lubricated from a longitudinally extending lubeline with syncronizeably operated nozzles spaced therealong and communicating with the conduit innerwall, and a longitudinally extending troughline collects the liquid lubricant, there being provision for re-cycling the lubricant for high-pressure re-injection into the conduits through said lubeline nozzles.

    摘要翻译: 一种架空运输系统,其包括用于垂直和纵向可穿越的车辆,作为一对纵向狭缝排放的管状管道的顶部轨道,其保持在地球表面上方,具有一系列柱体并且具有覆盖的保护屏蔽。 车辆动力装置包括位于相应导管内的一对可共同的喷气发动机,并且连接到下面的车辆上,并具有双臂机库装置,发动机的燃油管线沿着该双臂机库装置延伸。 轨道由纵向延伸的衬管润滑,同步可操作的喷嘴在其间隔开并与管道内壁连通,并且纵向延伸的槽线收集液体润滑剂,提供用于将润滑剂重新循环以进行高压再注入 通过所述管线喷嘴导管。

    Purification of carbothermally produced aluminum nitride
    3.
    发明授权
    Purification of carbothermally produced aluminum nitride 失效
    碳热还原氮化铝的纯化

    公开(公告)号:US5100846A

    公开(公告)日:1992-03-31

    申请号:US582285

    申请日:1990-09-13

    IPC分类号: C01B21/072

    CPC分类号: C01B21/0726

    摘要: A method is disclosed for purifying aluminum nitride produced by carbothermal reaction of aluminum oxide, carbon and nitrogen. Precursor pellets including aluminum oxide and carbon are exposed to nitrogen under conditions sufficient to carbothermally produce aluminum oxide, thereby producing aluminum nitride pellets having surface portions relatively rich in thermal conductivity-lowering and color-causing impurities compared to core portions of the aluminum nitride pellets. Significant amounts of the surface portions are thereafter removed to thereby significantly increase the purity of the aluminum nitride pellets.

    摘要翻译: 公开了一种用于纯化由氧化铝,碳和氮的碳热反应产生的氮化铝的方法。 包含氧化铝和碳的前体粒料在足以碳氢化生成氧化铝的条件下暴露于氮气,从而与氮化铝粒料的核心部分相比,生产具有相对较高导热性降低和着色杂质的表面部分的氮化铝丸粒。 然后除去显着量的表面部分,从而显着提高氮化铝颗粒的纯度。