Patent ID: 7644772

Claim:
An apparatus for restricting flow through a well conduit, the apparatus having a run-in position and a set position, the apparatus comprising: a housing having a longitudinal bore and a seat disposed within the bore, the seat having a first seat position when the apparatus is in the run-in position and a second seat position when the apparatus is in the set position, the seat being operatively associated with a plug element support member disposed below the seat, the plug element support member comprising an arcuate member, the arcuate member comprising at least two segment members disposed adjacent each other defining an initial gap between each other thereby separating the at least two segment members when the arcuate member is disposed in a first plug element support member position and a set gap between each other when the arcuate member is disposed in a second plug element support member position, the set gap having a seated distance measured across the set gap between adjacent segment members and the initial gap having an initial distance measured across the initial gap between adjacent segment members, the set distance being less than the initial distance; and a plug element adapted to be disposed into the bore and landed on the seat to restrict fluid flow through the bore and the well conduit and to cause the arcuate member to move from the first plug element support member position to the second plug element support member position thereby contacting the arcuate member with the plug member causing the seat and the arcuate member to provide support to the plug element.