Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Patent
1997-01-07
1998-06-16
Schoeppel, Roger J.
Boring or penetrating the earth
With above-ground means for handling drilling fluid or cutting
Fluid or cuttings directing or receiving means engaging bore...
408 72R, 408110, 1442522, E21C 712
Patent
active
057656541
ABSTRACT:
A device, for collecting drilled material and dust produced by a drilling tool, has a flange part (1) with a central axis to be secured to a housing of the drilling tool, and an axially extending container (2) for receiving the drilled material and dust and connected to and extending axially outwardly from the flange part (1) and being compressible in its axial direction towards the flange part. A ring-shaped sealing element (3) is arranged to contact a rotating part of the drilling tool. A radially outwardly extending annular rib on the sealing element is rotatably supported in an annular recess (26) in the flange part (1) and the recess is open towards the axis of the flange part so that no harmful wear can arise in spite of adequate sealing between the sealing element and the rotating part of the drilling tool.
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Hilti Aktiengesellschaft
Schoeppel Roger J.
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