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    • 1. 发明授权
    • Combination pump head
    • 组合泵头
    • US5762095A
    • 1998-06-09
    • US635861
    • 1996-04-22
    • Albert G. GapinskiCharles M. Schwimmer
    • Albert G. GapinskiCharles M. Schwimmer
    • B60S5/04F04B33/00F16K15/20
    • F16K15/20B60S5/04F04B33/005Y10T137/3584Y10T137/3724
    • A pump head comprising a main body defining a chamber and having a top end and a bottom end, a force transmitting member slidably positioned in the chamber adjacent to the top end of the main body, a resilient collar positioned in the chamber adjacent to the bottom end of the main body and in engagement with the force transmitting member, and a camming device pivotally mounted at the top end of the main body. The collar defines an axial cavity having an inner wall and an inside diameter. The camming device has first, second and third cam surfaces in selective engagement with the force transmitting member. The second and third cam surfaces act to displace the force-transmitting member into the chamber to different extents to compress the collar. Compression of the collar decreases the inner diameter of the collar, and thus causes the collar to sealingly engage the valve stem positioned in the axial cavity. Compression of the collar at differing levels allows the pump head to work with many valve stems of differing sizes.
    • 一种泵头,包括限定腔室并具有顶端和底端的主体,与所述主体的顶端相邻地可滑动地定位在所述腔室中的力传递构件,位于所述腔室中的与所述底部相邻的弹性环 并且与力传递构件接合,以及枢转地安装在主体的顶端的凸轮装置。 轴环限定具有内壁和内径的轴向空腔。 凸轮装置具有与力传递构件选择性接合的第一,第二和第三凸轮表面。 第二和第三凸轮表面用于将力传递构件移动到腔室中以不同的程度以压缩套环。 轴环的压缩减小了套环的内径,从而使套环密封地接合位于轴向空腔中的阀杆。 不同级别的轴环压缩允许泵头与许多不同尺寸的阀杆一起工作。