Patent ID: 8657010

Claim:
A downhole flow device, comprising: a first sleeve having a first internal bore and one or more ports defined on an axis thereof; a second sleeve having a second internal bore disposed on the first sleeve, the second sleeve movable along the axis relative to the one or more ports; and a seal disposed between the first and second sleeves and having a first component and a second component, the first component disposed on the first sleeve adjacent a first of the one or more ports and comprising a first outside shelf and a first outside ledge, the first outside shelf extending along the axis and having a distal end and a proximal end, the first outside ledge extending from the distal end of the first outside shelf at a first angle relative to the axis, the second component disposed on the second sleeve and comprising a first inside shelf and a first inside ledge, the first inside shelf extending along the axis parallel to the first outside shelf and having a distal end and a proximal end, the first inside ledge extending from the proximal end of the first inside shelf at a second angle relative to the axis, the first inside and outside ledges engaging toward one another when the seal is moved to a closed condition, the first inside ledge passing the first of the one or more ports along the axis when the distal ends of the first inside and outside shelves meet in a first opened condition relative to one another along the axis, the first inside and outside shelves are disposed at least partially adjacent one another along the axis when the seal is moved between the closed condition and the first opened condition.