Patent ID: 8359963

Claim:
Apparatus for severing a tubular member at a point between the ends of said tubular member comprising: a central rotating axle, an actuator to impart a clockwise or counterclockwise rotation of the central axle, an upper and lower non-rotating mounting disks affixed at the center on or near each end of the central axle, a rotating disk attached at the center to the midpoint of the central axle, a plurality of arc-shaped chambers each containing a shape charge for severing the tubular member on detonation having a forward end and a rear end, a plurality of identical push/pull rods having a first end affixed at equal spacing around the periphery of the rotating disk and a second end affixed to the rear end of each of the arc-shaped chambers, said push/pull rods having a swivel joint located between the first and second end, a plurality of upper guiding rods having a first end affixed at equal spacing attached to the forward end of each arc-shape chamber, each said upper guiding rod passing through a pivot/guide slot bracket affixed to the upper mounting disk and directing each arc-shaped chamber toward or away from the upper mounting disk as the central axle rotates clockwise or counterclockwise, and a plurality of lower guiding rods having a first end affixed at equal spacing attached to the rear end of each arc-shape chamber, each said lower guiding rod passing through a pivot/guide slot bracket affixed to the lower mounting disk and directing each arc-shaped chamber toward or away from the lower mounting disk as the central axle rotates clockwise or counterclockwise.