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US 2006/0233619 A1Published application
Boring device
AssigneeShonan Gosei-Jushi Seisakusho K.K.
InventorsTakao Kamiyama, Koji Kaneta, Kenji Fujii
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AssigneeShonan Gosei-Jushi Seisakusho K.K.
InventorsTakao Kamiyama, Koji Kaneta, Kenji Fujii
Estimating the term…
A boring device is provided with a boring blade that is inserted into a lateral pipe to bore a pipe lining material blocking the opening thereof. An air bag is provided and inflated to position the boring blade in the direction orthogonal to the longitudinal direction of the lateral pipe. With the boring blade properly positioned, a motor is operated to drive the boring blade so as to bore through the portion of the pipe lining material that blocks the opening of the lateral pipe. A weighting member is also used to urge the boring blade towards the pipe lining material to be bored through. Such an arrangement allows the boring blade to be positioned easily and correctly and prevents the boring blade from colliding with the internal peripheral surface of the lateral pipe.
A boring device inserted into a lateral pipe to bore a pipe lining material which is inserted into a main pipe across the lateral pipe intersecting therewith and a portion of which blocks an opening of the lateral pipe that communicates with the main pipe, comprising:
Dependencies are inferred from the claim text.