US 12,442,150 B2
Drilling tool and method for creating a bore in the ground
Matthias Mayinger, Rennertshofen (DE); and Andreas Stimpfle-Ziegler, Kühbach (DE)
Assigned to BAUER Spezialtiefbau GmbH, Schrobenhausen (DE)
Appl. No. 18/568,052
Filed by BAUER Spezialtiefbau GmbH, Schrobenhausen (DE)
PCT Filed May 25, 2022, PCT No. PCT/EP2022/064200
§ 371(c)(1), (2) Date Dec. 7, 2023,
PCT Pub. No. WO2022/258379, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 21178238 (EP), filed on Jun. 8, 2021.
Prior Publication US 2024/0271382 A1, Aug. 15, 2024
Int. Cl. E02D 3/12 (2006.01); E02D 7/22 (2006.01); E02D 7/24 (2006.01)
CPC E02D 3/126 (2013.01) [E02D 7/22 (2013.01); E02D 7/24 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A drilling tool for creating a bore in the ground, comprising
a tubular drill shank,
at least one removal device, which is configured to remove soil material,
a supply device for supplying a fluid through the drill shank through at least one outlet opening for the fluid into the bore, and
at least one mixing element extending radially to the drill shank, which is arranged on the drill shank at an axial distance from the removal device and is configured for mixing soil material with the fluid,
wherein at least one first outlet opening is arranged along the drill shank in the region of the removal device and at least one second outlet opening is arranged along the drill shank at an axial distance from the at least one first outlet opening,
wherein
at least one actuating device is provided on the supply device, by means of which the at least one first outlet opening and/or the at least one second outlet opening can be blocked, wherein fluid can optionally be introduced into the bore via the at least one first outlet opening and/or the at least one second outlet opening and
the at least one first outlet opening and the at least one second outlet opening can alternately be blocked by the at least one actuating device, wherein fluid can be introduced into the bore via the at least one first outlet opening and/or the at least one second outlet opening, while the at least one second outlet opening or rather the at least one first outlet opening is blocked.