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    • 107. 发明公开
    • Valve with backflow preventer
    • 通风机Rückflussverhinderer。
    • EP0652392A1
    • 1995-05-10
    • EP94106626.8
    • 1994-04-28
    • Shop-Vac Corporation
    • Berfield, Robert C.
    • F16K5/12F16K15/18
    • E03C1/104E03C1/102F16K24/02Y10T137/3294
    • A valve with a backflow preventer has a valve housing (12) with a fluid inlet (14), a main flow channel (18), and a fluid outlet (16) formed therein. A valve element is provided in the valve housing to selectively actuate the valve. The valve element (40) is rotatable between an open position in which a fluid flow path exists between the fluid inlet and the fluid outlet along the main flow channel and a closed position in which no fluid flow path exists between the fluid inlet and the fluid outlet. A chamber (82) is formed in the valve housing in a position which is offset from the main flow channel. The chamber has an opening (88) in fluid communication with the atmosphere, and a ball (86) is provided in the interior of the chamber. The ball is movable between a first position in which the ball prevents fluid backflow from the fluid outlet to the fluid inlet and a second position in which the ball substantially blocks the opening in the chamber.
    • 具有回流防止器的阀具有阀壳体,其中形成有流体入口,主流动通道和流体出口。 阀元件设置在阀壳体中以选择性地致动阀。 阀元件可以在其中在流体入口和沿着主流动通道的流体出口之间存在流体流路的打开位置和在流体入口和流体出口之间不存在流体流动路径的关闭位置之间旋转。 在阀壳体中形成有与主流路偏移的位置。 该室具有与大气流体连通的开口,并且在室的内部设置有球。 球可在第一位置和第二位置之间移动,在第一位置,球防止流体从流体出口向流体入口回流,在第二位置,球基本上阻挡腔室中的开口。
    • 108. 发明公开
    • METHOD AND DEVICE FOR MEASURING QUANTITIES OF IMPURITIES IN SPECIAL GAS
    • 测量特殊气体中杂质数量的方法和装置
    • EP0651247A1
    • 1995-05-03
    • EP92910180.6
    • 1992-05-13
    • OHMI, Tadahiro
    • OHMI, Tadahiro
    • G01N30/00G01N27/62G01N30/06G01N33/00
    • G01N30/00
    • A method and a device for the quantitative measurement of impurities in special gas at a level of ultra-high purity. After inert gas of ultra-high purity is supplied to a sample-gas pipe (14) through a purifier (1) (a first gas supply source), the inside of said sample-gas pipe (14) is baked by heating means (22 to 24). Then, the inside of the sample-gas pipe (14) is kept in an atmosphere at a specified temperature and a first and second changeover valves (9, 10; 16, 17) are changed over so that a fixed quantity of special gas is supplied into the sample-gas pipe (14). Afterward, the special gas remaining in the sample-gas pipe (14) is discharged and the 1st and 2nd changeover valves (9, 10; 16, 17) are changed over so that impurities may be desorbed by baking the inside of the sample-gas pipe, and quantities of desorbed impurities are measured.
    • 一种定量测量超高纯度特殊气体中杂质的方法和装置。 在通过净化器(1)(第一气体供应源)向样品气管(14)供应超高纯度的惰性气体之后,所述样品气管(14)的内部通过加热装置( 22至24)。 然后,将样气管(14)的内部保持在特定温度的气氛中,并且切换第一和第二转换阀(9,10; 16,17),使得固定量的特殊气体是 供应到样气管(14)中。 之后,排出残留在样品气体管道(14)内的特殊气体,切换第一和第二切换阀(9,10; 16,17),通过烧结样品气体管道(14)内部的杂质而使杂质脱离。 气管,以及测量解吸的杂质数量。
    • 109. 发明公开
    • Hose connector for a vacuum
    • SchlauchanschlussstückfürVakuumeinrichtung。
    • EP0647424A1
    • 1995-04-12
    • EP94107924.6
    • 1994-05-24
    • SHOP VAC CORPORATION
    • Berfield, Robert C.
    • A47L9/24
    • A47L9/242
    • A hose connector for a vacuum cleaner (10) having a lid (14) includes a hose inlet having opening extending through a skirt (24) of the lid, surfaces disposed on one of the hose inlet and the connection end (50) defining slot portions extending in a particular direction and flange portions disposed on opposite sides of the other of the hose inlet and the connection end. Each slot portion has a width sufficient to receive a flange portion. The vacuum cleaner is assembled by sliding the connection end into the opening along the particular direction before the lid is assembled on the skirt such that the flange portions are received in the slot portions. The lid is thereafter placed on the tank (12) such that a tank receiving portion of the connection end receives a portion of the tank.
    • 用于具有盖(14)的真空吸尘器(10)的软管连接器包括具有延伸穿过盖的裙部(24)的开口的软管入口,设置在软管入口和连接端(50)中的一个上的表面限定槽 在特定方向上延伸的部分和设置在软管入口和连接端的另一个的相对侧上的凸缘部分。 每个槽部分具有足以容纳凸缘部分的宽度。 在将盖组装在裙部之前沿着特定方向将连接端滑入开口中,使得凸缘部分被容纳在狭槽部分中来组装真空吸尘器。 然后将盖子放置在罐(12)上,使得连接端的罐容纳部分容纳罐的一部分。