A hanger assembly used to support tubing, such as a siphon string, and other tools beneath the surface of a wellbore within casing or production tubing. The assembly includes a setting mechanism having first and second sleeves responsive to increased pressure for moving relative to one another for activating...http://www.google.co.uk/patents/US5421414?utm_source=gb-gplus-sharePatent US5421414 - Siphon string assembly compatible for use with subsurface safety devices within a wellbore
