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公开(公告)号：US5803433A
公开(公告)日：1998-09-08
申请号：US821335
申请日：1997-03-20
摘要： An apparatus for orienting the forces exerted by a helical coil spring on relatively movable elements is disclosed in which a movable element is movably mounted within a casing so as to move along a movement axis, in which a helical coil spring is interposed between the casing and the movable element so as to exert opposite forces on the casing and the movable element. The lateral forces and the torque forces on the movable element are eliminated by using a swivel joint interposed between the piston and one end of the helical coil spring. The use of the swivel element insures that the force exerted on the movable element by the helical coil spring is coincident with the movement axis of the movable element. A second swivel joint may be utilized between the second end of the helical coil spring and the casing, if desired.
摘要翻译： 公开了一种用于将由螺旋形螺旋弹簧施加的力定向在相对可移动元件上的装置，其中可移动元件可移动地安装在壳体内，以便沿着运动轴线移动，其中螺旋形螺旋弹簧介于壳体和 可移动元件以在壳体和可移动元件上施加相反的力。 通过使用插入在活塞和螺旋形螺旋弹簧的一端之间的旋转接头来消除可动元件上的横向力和扭矩力。 使用旋转元件确保由螺旋形螺旋弹簧施加在可移动元件上的力与可移动元件的移动轴线重合。 如果需要，可以在螺旋形螺旋弹簧的第二端和壳体之间使用第二旋转接头。
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公开(公告)号：US5333644A
公开(公告)日：1994-08-02
申请号：US180277
申请日：1994-01-12
CPC分类号： F16K1/443 , Y10T137/88038 , Y10T137/88046
摘要： A valve assembly is disclosed having a valve body with dual valve seats and movable valve member located in the valve body having dual sealing surfaces to bear against the two value seats. One of the valve seats has a sharp-edged configuration which is contacted by a generally frusto-conical sealing surface on a movable primary valve member to crush or break any foreign material in the fluid flow stream. The conical sealing surface and the sharp-edged valve seat also act as a seal to block the fluid flow passageway. A secondary valve member is attached to the primary valve member and has a second sealing surface configured to engage the second valve seat of the valve body. The second valve seat and the second sealing surface may be annular and each have a partially, spherical, cross-sectional configuration. The secondary valve member is connected to the primary valve member such that they may move relatively to each other along their axis of movement. The primary valve member may also be skewed relative to its axis of movement, caused by any foreign particles between the sharp-edged valve seat and the frusto-conical sealing surface without such skewed movement being imparted to the secondary valve member. Thus, even if the primary valve member should be skewed relative to its axis of movement, thereby preventing the first sealing surface from blocking the fluid flow passageway, the sealing surface of the secondary valve member will still contact the second valve seat to block the fluid flow passageway.
摘要翻译： 公开了一种阀组件，其具有带有双阀座的阀体和位于阀体中的可移动阀构件，该阀体具有双重密封表面以抵靠两个阀座。 其中一个阀座具有锋利的边缘构造，其通过可移动主阀构件上的大致截头圆锥形密封表面接触，以挤压或打破流体流动流中的任何异物。 锥形密封表面和锋利的边缘阀座也用作密封件以阻塞流体流动通道。 次级阀构件附接到主阀构件并且具有构造成接合阀体的第二阀座的第二密封表面。 第二阀座和第二密封表面可以是环形的，并且每个具有部分，球形的横截面构造。 第二阀构件连接到主阀构件，使得它们可以沿其运动轴线相对于彼此移动。 主阀构件也可以相对于其运动轴线倾斜，由尖锐的阀座与截头圆锥形密封表面之间的任何外来颗粒引起，而不会使这种偏移运动被赋予次级阀构件。 因此，即使主阀构件相对于其运动轴线应该倾斜，从而防止第一密封表面阻塞流体流动通道，次级阀构件的密封表面仍将接触第二阀座以阻塞流体 流通道。
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