| US 7,402,030 B2 | ||
| Apparatus for everting a lining material | ||
| Takao Kamiyama, Hiratsuka (Japan); Koji Kaneta, Hiratsuka (Japan); Kenji Fujii, Hiratsuka (Japan); and Ryoichi Goto, Hiratsuka (Japan) | ||
| Assigned to Shonan Gosei-Jushi Seisakusho K.K., (Japan) | ||
| Filed on Dec. 27, 2005, as Appl. No. 11/319,108. | ||
| Claims priority of application No. 2004-379055 (JP), filed on Dec. 28, 2004; and application No. 2005-347430 (JP), filed on Dec. 01, 2005. | ||
| Prior Publication US 2006/0159791 A1, Jul. 20, 2006 | ||
| Int. Cl. B29C 31/04 (2006.01) | ||
| U.S. Cl. 425—11 [425/13; 156/287; 156/294; 138/97] | 24 Claims |
| 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.
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