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

Claim 16:
17. A ground drilling rod comprising a ground drilling tool, wherein the ground drilling tool is configured at a first end to form a plug connection and wherein the ground drilling tool has
(a) a male connector or
(b) a female connector
at the first end,
wherein the male connector has at least two circular portions and at least two more straight-line-like portion in a cross section on the outside, or the female connector has at least two circular portions and at least two more straight-line-like portions in a cross section 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.