US 12,359,511 B2
Drilling tool and method for producing a bore in the ground
Fabian Denk, Vohburg (DE); Robert Lauerer, Schrobenhausen (DE); and Michael Stohl, Schrobenhausen (DE)
Assigned to BAUER Maschinen GmbH, Schrobenhausen (DE)
Appl. No. 18/719,587
Filed by BAUER Maschinen GmbH, Schrobenhausen (DE)
PCT Filed Dec. 2, 2022, PCT No. PCT/EP2022/084183
§ 371(c)(1), (2) Date Jun. 13, 2024,
PCT Pub. No. WO2023/110450, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 21214859 (EP), filed on Dec. 15, 2021.
Prior Publication US 2025/0043636 A1, Feb. 6, 2025
Int. Cl. E21B 10/32 (2006.01); E21B 7/00 (2006.01); E21B 7/20 (2006.01)
CPC E21B 10/327 (2013.01) [E21B 7/003 (2013.01); E21B 7/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. Drilling tool for producing a bore in the ground, comprising
a rotatably drivable basic body,
a removal means at a lower end of the basic body for removing soil material, and
at least one adjustable removal element which is adjustable between a radially internal retraction position and a radially external extension position in which the removal element protrudes radially outwards relative to the basic body to widen a bore diameter,
wherein for adjusting the removal element there is provided an adjustment mechanism with a rotary member which is rotatable on the basic body about the drilling axis between a first rotary position and a second rotary position,
wherein the at least one removal element is arranged on a pivot arm which, relative to the basic body, is pivotable between a first pivoting position, in which the at least one removal element is in its retraction position, and a second pivoting position, in which the at least one removal element is in its extension position, and
there is provided on the rotary member and/or on the at least one pivot arm an actuating cam by which a rotary movement of the rotary member can be converted into a pivoting movement of the at least one pivot arm,
wherein
the basic body has a drum-shaped drilling case with at least one lower receiving opening, and
the rotary member is configured as a rotary base for opening and closing the at least one receiving opening.