公开(公告)号：US5333467A

公开(公告)日：1994-08-02

申请号：US140981

申请日：1993-10-25

申请人： David S. Pearl, II ,  Louis H. Webb, III ,  Shaheed Mohammed ,  Dragan Bukur

发明人： David S. Pearl, II ,  Louis H. Webb, III ,  Shaheed Mohammed ,  Dragan Bukur

IPC分类号： F16L29/00 ,  F25B41/00 ,  F25B45/00

CPC分类号： F25B41/003 ,  F16L29/00 ,  F25B45/00 ,  F25B2345/006

摘要： An apparatus and method for preventing an undesirable release of fluid from a conduit upon disconnection of the conduit. In a specific form of the invention, the apparatus includes a hose having a slide valve located therein adjacent an end of the hose for preventing the escape of liquids or gases, especially refrigerants, to the environment. The slide valve includes a substantially cylindrically shaped nipple having first and second bores extending axially therethrough, the first and second bores being divided and bounded by an integral wall of the nipple. The nipple includes a plurality of ports adjacent the integral wall which provide passages through the nipple to provide fluid communication between the first and second bores. A sleeve member is slidable disposed around the nipple and contains seals for providing a gas-tight and/or liquid-tight interface between the sleeve and the nipple. The sleeve member also includes an annular chamber for selectively providing the aforementioned fluid communication between the bores. A preferred embodiment of the invention includes a conduit having a threaded screw type valve which includes a substantially cylindrically shaped rear nipple emanating from its first end, having a central bore extending therethrough. The rear nipple is exteriorly threaded to a threaded valve body which, when rotated is capable of sealing and unsealing a valve set with a valve fitting for selectively opening and closing a passageway for the flow of liquid an/or gas from the rear nipple to a front nipple. The front nipple is capable of rotating with respect to the rest of the device without breaking its seal and can be removed and interchanged without a substantial loss of fluid.

摘要翻译： 一种用于在导管断开时防止流体从管道中不期望的释放的装置和方法。 在本发明的具体形式中，该装置包括一软管，该软管具有位于其中邻近软管端部的滑阀，用于防止液体或气体尤其是致冷剂逸出到环境中。 滑阀包括基本上圆柱形的接头，其具有轴向延伸穿过其中的第一和第二孔，第一和第二孔由乳头的整体壁分开和界定。 乳头包括邻近整体壁的多个端口，其提供通过乳头的通道，以在第一和第二孔之间提供流体连通。 套筒构件可滑动地布置在乳头周围，并且包含用于在套筒和乳头之间提供气密和/或液密接口的密封件。 套筒构件还包括用于选择性地提供孔之间的上述流体连通的环形室。 本发明的优选实施例包括具有螺纹型阀的导管，其包括从其第一端发出的具有延伸穿过其中的中心孔的基本上圆柱形的后部乳头。 后端接头外部螺纹连接到螺纹阀体上，该阀体在旋转时能够利用阀接头密封和开启阀组，以便选择性地打开和关闭用于将液体或/或气体从后乳头流到 前乳头 前乳头能够相对于装置的其余部分旋转而不破坏其密封，并且可以移除和互换而不会明显损失流体。