Rod section of a ground drilling rod
AssigneeTRACTO-TECHNIK GmbH & Co. KG
InventorsVolker Boike, Tobias Klein
Life of this patent
Estimating the term…
Abstract
The invention relates to a rod section of a ground drilling rod, wherein the rod section is configured at the end to form a plug connection and has (a) a male connector or (b) a female connector at at least one end, wherein the male connector has at least one circular portion and at least one more straight-line-like portion in cross section on the outside, or the female connector has at least one circular portion and at least one more straight-line-like portion in cross section on the inside.
Claims17
A ground drilling rod comprising a rod section, wherein the rod section is configured at a first end to form a plug connection and wherein the rod section 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.
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.
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.
Dependencies are inferred from the claim text.