Patent ID: 7581596

Claim:
A downhole tool including a closure seat for receiving a closure and thereby increasing fluid pressure above the closure seat to perform an operation on the downhole tool and/or another downhole tool, comprising: a tool body having a central throughbore for passing the closure through the tool body, the closure seat having a radially retracted and inward compressed position when positioned within the tool body for seating with the closure while the central throughbore restricts radial expansion of the closure seat; a connector for temporarily limiting axial movement of the closure seat with respect to the tool body, and releasing the closure seat to move axially to a radially expanded position within the tool body to release the closure seat from the central throughbore and allow the closure seat to expand to an unbiased position and release the closure; and a seal body positioned for sealing with the closure; and an annular seal supported in an annular groove in the seal body above the closure seat for sealing between the closure and the seal body while the closure is seated on the closure seat.