Patent ID: 7402030
Filing Date: 2008-07-22
Classification: B29C,F16L

Abstract:
1. An apparatus for everting a tubular pipe lining material for rehabilitating an existing pipe, the apparatus comprising: a sealed storage container storing a rotary body around which the pipe lining material is wound in a roll; an electric motor for undergoing rotation in a first rotational direction to rotate the rotary body to wind the pipe lining material on the rotary body and for undergoing rotation in a second rotational direction opposite to the first rotational direction; and an eversion nozzle attached to the storage container for everting the pipe lining material; wherein when fluid pressure is supplied into the storage container to pull the pipe lining material out from the storage container and evert it via the eversion nozzle, the electric motor is caused to rotate in the second rotational direction due to the pulling out of the pipe lining material and to function as an electric generator to brake the pullout of the pipe lining material.