Extrusion die and method for extruding aluminum
    2.
    发明授权
    Extrusion die and method for extruding aluminum 失效
    挤出模具和铝挤压方法

    公开(公告)号:US5095734A

    公开(公告)日:1992-03-17

    申请号:US627712

    申请日:1990-12-14

    申请人: David M. Asher

    发明人: David M. Asher

    IPC分类号: B21C25/02

    CPC分类号: B21C25/02

    摘要: An extrusion die for extrusion of metal has a passageway with a bearing section having parallel bearing surface portions in the direction of extrusion which extend inwardly from an inlet opening a variable distance based upon the size of the gap at such portions and a relief section downstream from said bearing section and having relief surface portions tapering away from said bearing surface portions in the direction of extrusion, said relief surface portions following a straight-line path.

    摘要翻译: 用于挤压金属的挤出模具具有通道,该通道具有在挤出方向上具有平行的支承表面部分的通道,所述支承部分在挤出方向上从入口开口向内延伸,基于在这些部分处的间隙的大小和在下游的释放部分 所述轴承部分并且具有在挤出方向上远离所述轴承表面部分渐缩的凸出面部分,所述凸面部分跟随直线路径。

    Self-lift carburetor
    3.
    发明授权
    Self-lift carburetor 失效
    自升式化油器

    公开(公告)号:US4139580A

    公开(公告)日:1979-02-13

    申请号:US796614

    申请日:1977-05-13

    IPC分类号: F02M17/04 F02M17/40

    CPC分类号: F02M17/04 Y10S261/68

    摘要: A small carburetor for chain saws and the like which needs no fuel pump. A spring-biased diaphragm has a radically higher bias than is normal and controls a fuel inlet valve open to the tank such that a higher vacuum is needed to open the valve, thus providing the necessary pull to draw fuel from a tank in any position relative to the fuel tank whether below, above, or to the side of the carburetor. An on-off check valve is interposed between the diaphragm fuel chamber and the main fuel orifice to insure constant negative pressures in the diaphragm chamber. The carburetor body, molded from plastic, has a composite jet insert and plug-in connection to the engine.

    摘要翻译: 用于链锯等的小型化油器,不需要燃油泵。 弹簧偏置的隔膜具有比正常的更大的偏压,并且控制燃料入口阀向罐开口,使得需要更高的真空来打开阀,从而提供必要的拉力,以在相对于任何位置的罐中抽取燃料 到燃油箱,无论是在汽油机上方,还是在化油器的侧面。 在隔膜燃料室和主燃料孔之间插入开关止回阀,以确保隔膜室中的恒定的负压。 由塑料成型的化油器主体具有复合喷射插件并与发动机插入连接。