Patent ID: 7105204

Claim:
An apparatus for application of a coating material to the exterior surface of a pipe comprising: a stator arranged in use to be disposed around the exterior surface of the pipe; a substantially annular rotor rotationally disposed within the stator and arranged to have in use a common central axis with the pipe; at least one gallery extending substantially around the axis, the at least one gallery internal to the rotor; at least one coating head having an internal passage for the coating material and an opening arranged in use to be in close contact with the exterior surface of the pipe, the internal passage connected to the at least one gallery; a drive means for rotating the rotor and the at least one coating head around the exterior of the pipe; at least one outlet mounted on the stator and protruding laterally into the at least one gallery for injecting the coating material into the at least one gallery; and a means for applying positive air pressure to the at least one gallery, whereby the coating material is forced by air pressure through the at least one gallery and ejected onto the exterior surface of the pipe through the at least one coating head.