公开(公告)号：US09581228B2

公开(公告)日：2017-02-28

申请号：US14506233

申请日：2014-10-03

Applicant: Emerson Process Management Regulator Technologies, Inc.

Inventor： Khashayar Afnan Nashery ,  Ernesto Vasquez

IPC: F16K31/44 ,  F16H53/02 ,  F16K1/34 ,  F16K39/02 ,  F16K3/18 ,  F16K3/20 ,  F16K31/52 ,  F16K31/524

CPC classification number: F16H53/02 ,  F16K1/34 ,  F16K3/184 ,  F16K3/205 ,  F16K31/52 ,  F16K31/523 ,  F16K31/524 ,  F16K31/52408 ,  F16K39/024

Abstract: Cam apparatus for use with valves are disclosed. An example apparatus includes a cam having a cam surface to engage a valve stem, a first portion of the cam surface to engage the valve stem in a closed position, a second portion of the cam surface to engage the valve stem in an open position, and a third portion of the cam surface adjacent the first portion and defining a curved profile. The third portion is to engage the valve stem when the cam is rotated to a first intermediate position between the closed position and the open position. The example apparatus also includes a fourth portion of the cam surface between the second portion and the third portion and defining a linear profile. The fourth portion is to engage the valve stem surface as the cam rotates between the first intermediate position and the open position.

Abstract translation: 公开了一种用于阀门的凸轮装置。 示例性装置包括具有凸轮表面以与阀杆接合的凸轮，凸轮表面的第一部分，以在闭合位置接合阀杆，凸轮表面的第二部分将阀杆接合在打开位置， 以及凸轮表面的与第一部分相邻并且限定弯曲轮廓的第三部分。 当凸轮旋转到关闭位置和打开位置之间的第一中间位置时，第三部分接合阀杆。 示例性装置还包括在第二部分和第三部分之间的凸轮表面的第四部分并且限定线性轮廓。 第四部分是当凸轮在第一中间位置和打开位置之间旋转时接合阀杆表面。