Drilling device for drilling hole in branch pipe, has device body intended to be screwed onto branch valve, where drilling tool is freely movable in translation relative to device body between retracted position and advanced position

摘要

The device (10) has a device body (14) defining an interior space (16) and intended to be screwed onto a branch valve. A drilling tool (18) is freely movable in translation relative to the device body between a retracted position and an advanced position, where the drilling tool is freely rotatable about an axis of rotation relative to the device body. The device body includes an adapter ring (22) that is attached releasably to a base body (20) by screwing, where the adapter ring includes an internal thread (30) by which the device body is screwed onto the branch valve. An independent claim is also included for an assembly of a drilling device and an adapter ring.