A method and device for providing a protective coating for the inside of pipes, said method utilizing a device which is remotely actuated from outside said pipes. Specifically, the device comprises a memory metal delivery member, a corrosion resistant liner member, and a bonding member, said device expanding...http://www.google.com/patents/US4355664?utm_source=gb-gplus-sharePatent US4355664 - Apparatus for internal pipe protection
