Patent ID: 8407949

Claim:
A screw-in ground anchor for anchoring structural elements in soil, the screw-in ground anchor comprising: a base member including at least three regions having at least two cylindrical regions and at least one conical region wherein said at least three regions are arranged so that there are alternating cylindrical and conical regions with decreasing size in the direction towards the ground; and at least one cutting blade that produces forward motion, wherein each of the at least one cutting blade extends over only one of said cylindrical regions and does not extend over and does not extend beyond an extent of said one cylindrical region and does not extend over any region which has a conical shape, wherein the at least one cutting blade that produces forward motion is produced by forging or a casting process, is attached to the lower cylindrical region, and has a uniform pitch, and wherein a filling of a curable material is introduced into the upper cylindrical region of the base member, in which material a support is fastened directly or indirectly.