Patent ID: 7137762

Claim:
A device for tapping a conduit conducting a flowing fluid comprising: a housing, which has a principal part, a fixing part aligned with the principal part for fixing to the conduit and an outlet part for carrying away fluid from a tapped conduit, a rotatable cutting device arranged inside the principal part, which cutting device has an external thread and a cylindrical cutting blade facing the fixing part, the external thread of the cutting device being screwed into an internal thread of the principal part, so that the cutting device can be turned from a retracted first position into an extended second position, in which a wall piece is cut out of the conduit, and a shaft arranged inside the principal part, a proximate end of the shaft being fixed to a side of the cutting device facing away from the fixing part, and the shaft comprising a telescopic shaft with at least two segments that can be displaced in relation to each other in a sealed manner, a distal end of said telescopic shaft being fixed to the principal part in a sealed manner with a section facing away from the cutting device.