Patent ID: 8100181

Claim:
A safety valve apparatus, comprising: a housing defining a bore and having a projection disposed in the bore, the projection having a port communicating with the bore; a flapper rotatably disposed on the housing and movable relative to the bore between opened and closed positions; a packing element disposed on the housing and being compressible from an uncompressed condition to a compressed condition, the packing element in the compressed condition engagable with an inner conduit wall surrounding the housing; a first sleeve disposed on the housing and being hydraulically movable from a first position to a second position via hydraulic communication with the port, the first sleeve in the first position leaving the packing element in the uncompressed condition, the first sleeve in the second position compressing the packing element into the compressed condition; a piston disposed on the housing and hydraulically communicating with the port; and a second sleeve disposed on the housing, the second sleeve coupled to and concealing the piston from the bore and being hydraulically movable between third and fourth positions via hydraulic communication of the port with the piston, the second sleeve in the third position moving the flapper to the opened position, the second sleeve in the fourth position permitting the flapper to move to the closed position.