Patent ID: 7461698

Claim:
A remotely operable safety valve assembly for use with top drive drilling systems, comprising: a) an elongated main body having a longitudinal bore therethrough; b) a first valve element disposed in said main body; c) a second valve element disposed in said main body; d) an actuator sleeve disposed around said main body and longitudinally slidable thereon in response to a remotely operable actuating arm; and e) means for operatively engaging said actuator sleeve with either said first valve element in a first operating mode or alternatively said second valve element in a second operating mode, wherein: i) in said first operating mode, said means for operatively engaging said actuator sleeve with said first valve element comprises an external arm attached to said first valve element, said arm engaging a profile in a wall of said actuator sleeve; and ii) in said second operating mode, said external arm is removed, and said means for operatively engaging said actuator sleeve with said second valve element comprises an external arm attached to said second valve element and a linkage connecting said actuator sleeve to said external arm.