Plastic article or earthenware shaping or treating: apparatus – Product or preform repair or restoring means
Reexamination Certificate
2008-07-22
2008-07-22
Griffin, Steven P. (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Product or preform repair or restoring means
C425S013000, C156S287000, C156S294000, C138S097000
Reexamination Certificate
active
07402030
ABSTRACT:
An apparatus is provided for everting a tubular pipe lining material for rehabilitating an existing pipe. The apparatus has a sealed storage container storing a rotary body around which the pipe lining material is wound in a roll. An electric motor undergoes rotation in a first rotational direction to rotate the rotary body to wind the pipe lining material on the rotary body and undergoes rotation in a second rotational direction opposite to the first rotational direction. An eversion nozzle is attached to the storage container for everting the pipe lining material. 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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Fujii Kenji
Goto Ryoichi
Kamiyama Takao
Kaneta Koji
Adams & Wilks
Griffin Steven P.
Malekzadeh Seyed Masoud
Shonan Gosei-jushi Seisakusho K.K.
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