SCREW ANCHOR Russian patent published in 2012 - IPC E02D5/80 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to erection of anchors for guy-roped stays in construction of power transmission lines, masts of retransmitters and radio relay towers, and also for arrangement of anchor holds for floating structures. The screw anchor comprises a shaft with a cone tip equipped with a conical helical blade with an angle of lift below the angle of friction surface between a blade and soil with a bearing turn of a permanent diameter. An additional blade turn of the same pitch and direction as turns of the conical blade is fixed to the anchor shaft at the distance of at least three and a half diameters of the bearing turn of the conical blade.

EFFECT: higher bearing capacity of a screw anchor, reduced material intensity and labour intensiveness.

2 dwg