Patent ID: 11959340
Assignee: TRACTO-TECHNIK GMBH & CO. KG
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 14:
15. A method for drilling a borehole in the ground comprising:
providing a ground drilling rod comprising a rod section or ground drilling tool,
wherein the rod section or a ground drilling tool is configured at a first end to form a plug connection and wherein the rod section
(a) has a male connector or
(b) a female connector,
and wherein a cross section of the male connector has at least two circular portions and at least two more straight-line-like portions on the outside, or a cross section of the female connector has at least two circular portions and at least two more straight-line-like portions on the inside, wherein the at least two circular portions of the male connector or the at least two circular portions of the female connector have a substantially equal radius of curvature relative to substantially a same point,
wherein the at least two circular portions and the at least two more straight-line-like portions are continuously or smoothly interconnected, and
wherein the at least two more straight-line-like portions each comprise a curvature that corresponds to at least 1% of a curvature of the at least two circular portions.