Patent ID: 9400063
Filing Date: 2016-07-26
CPC Classification: F16K,Y10T

Claim Text:
1. A valve comprising: a valve body defining a flow path passing through a valve opening, said valve body having a cover; a plug displaceable along a direction of movement within said valve body from a closed position in which said plug closes said valve opening and an open position in which said plug allows flow through said valve opening; a rotating indicator associated with an external surface of said cover for indicating a position of said plug; and a linear-to-rotary linkage associated with said plug and said rotating indicator and configured to convert linear motion of said plug into rotary motion of said rotating indicator, said linear-to-rotary linkage comprising: a helical track extending along an axis parallel to the direction of movement; and a bracket supporting a slider in sliding engagement with said helical track, wherein each of said helical track and said bracket has a dimension along the direction of movement of said plug that is (a) greater than a range of movement of said plug; and (b) less than the difference between a maximum gap between said plug and said cover when said plug is in said closed position and said range of movement of said plug.