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公开(公告)号：US5952566A
公开(公告)日：1999-09-14
申请号：US968270
申请日：1997-11-12
CPC分类号： G01L19/0015 , B60T17/228
摘要： A dual valve apparatus enables quick measurement of pressure contained within a housing. The housing has a main body, a check valve housed in the main body and a cover whose removal renders the check valve accessible. The check valve is normally compressed against a check valve seat to provide a first seal that prevents leakage of the pressure. The dual valve apparatus includes a modified cover, a valve body and a valve stem. The modified cover defines first and second bores axially offset from and in communication with one another. The first bore is at least partially threaded. When the modified cover is secured to the main body, the second bore is aligned with the check valve. The valve body accommodates a valve bore from its protuberant end to its threaded end. The protuberant end is shaped to mate with a female portion of a quick connect coupling. The threaded end screws into the first bore of the modified cover. Movable within the bores, the valve stem at its head end is normally compressed against a valve seat formed within the protuberant end of the valve bore to provide a second seal that further prevents leakage of the pressure. Mating the female portion to the protuberant end of the dual valve apparatus causes the valve stem to move away from its seat. The valve stem in turn unseats the check valve thereby providing access to and enabling measurement of the pressure.
摘要翻译： 双阀装置能够快速测量外壳中所含的压力。 壳体具有主体，容纳在主体中的止回阀和移除使止回阀可接近的盖。 止回阀通常被压在止回阀座上以提供防止压力泄漏的第一密封。 双阀装置包括改进的盖，阀体和阀杆。 改进的盖限定了彼此轴向偏移并且彼此连通的第一和第二孔。 第一孔至少部分螺纹。 当改进的盖固定到主体上时，第二孔与止回阀对准。 阀体从其突出端容纳阀孔到其螺纹端。 突起端被成形为与快速连接联接器的阴部配合。 螺纹端螺丝进入修改盖的第一孔。 在孔内可移动，阀杆头部的阀杆通常被压缩成形成在阀孔突起端内的阀座，以提供进一步防止压力泄漏的第二密封。 将阴部分配合到双阀装置的突出端部使阀杆离开其座。 阀杆依次卸载止回阀，从而提供对压力的访问和测量。
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2.发明授权
公开(公告)号：US5869765A
公开(公告)日：1999-02-09
申请号：US901096
申请日：1997-07-28
CPC分类号： G01L19/0007
摘要： A dual seal coupling fitting enables quick measurement of pressure. The fitting includes primary and secondary valves and has one end shaped like a male portion of a quick coupler and another end screwable into a threaded bore defined in a pressure bearing housing. The fitting defines first and second cylindrical sections in communication with each other. The primary valve situates in the first section, the secondary valve in the second section. The primary valve includes a valve stem with a poppet head. A first mechanism compresses the poppet head against an outer valve seat to close the primary valve thereby preventing leakage of pressure. The secondary valve features a cylindrical seat piece and a retainer. The piece secures within the second section and defines through itself an inner bore. The piece at one end forms an inner valve seat and at an opposite end situates adjacent the first mechanism. The retainer has at one end a post approximate a terminal end of the valve stem within the inner bore. The retainer also has a check valve retained within an annular recess defined about a base of the post. A second mechanism compresses the check valve against the inner valve seat to close the secondary valve thereby further preventing leakage of pressure. Mating a female portion of a quick coupler to the male portion opens the primary and secondary valves and enables quick measurement of the pressure via a gage attached to the other end of the female portion.
摘要翻译： 双重密封联轴器配件可以快速测量压力。 配件包括主阀和次阀，并且其一端形状类似于快速联接器的凸形部分，另一端可旋拧到限定在压力轴承壳体中的螺纹孔中。 配件限定彼此连通的第一和第二圆柱形部分。 主阀位于第一部分，第二部分为次级阀。 主阀包括具有提升头的阀杆。 第一机构将提升阀头压靠在外阀座上以关闭主阀，从而防止压力泄漏。 次级阀具有圆柱形座件和保持器。 该件固定在第二部分内，并且自身限定内孔。 一端的一端形成一个内阀座，相对的一端位于第一机构附近。 保持器的一端具有近似在内孔内的阀杆末端的柱。 保持器还具有保持在围绕柱的基部限定的环形凹部内的止回阀。 第二机构将止回阀压靠在内阀座上以关闭次级阀，从而进一步防止压力泄漏。 将快速联接器的阴部配合到阳部打开主阀和次阀，并且能够通过连接到阴部的另一端的量规快速测量压力。
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公开(公告)号：US20060028062A1
公开(公告)日：2006-02-09
申请号：US11242184
申请日：2005-10-03
申请人： Michael Veltri , Jeffrey Wurzer
发明人： Michael Veltri , Jeffrey Wurzer
IPC分类号： B60T8/34
CPC分类号： B60T8/1893 , C04B41/009 , C04B41/4523 , C04B2111/00844 , C04B41/5127 , C04B41/5155 , C04B41/5144 , C04B35/52 , C04B35/83 , C04B38/00
摘要： A release graduating proportioning valve for a rail car brake system having a brake pipe, a brake cylinder, and a load sensor valve which selectively connects the control volume to the brake cylinder. The release graduating proportioning valve has a proportioning piston movable between a first position at which a control volume is isolated from atmosphere to a second position at which the control volume is connected to atmosphere, to enable graduated release of brake cylinder pressure. A port to atmosphere is provided in the valve body, and the port is connected to, or isolated from, the control volume responsive to movement of the proportioning piston.
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