DRIVEN PILE Russian patent published in 2015 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: driven pile comprises a screw shaft, which is made along the perimeter in the form of a hollow conical helical surface, mounted along the perimeter of the helical shaft and made of strips of convex curved shape arranged at sides of strips as curved with second degree of curvature with various dimensions by width of strips increasing along the length of the conical helical surface, folded in the vertical plane in longitudinal direction and bent along helical lines in the transverse direction on a holder in the form of a paraboloid of rotation, with formation of helical lines and helical curved surfaces of double curvature of concave shape relative to axis of symmetry of the helical surface with centres of curvature outside the helical jacket along the perimeter outside the helical surface.

EFFECT: easier submersion of a shaft into soil, simplified manufacturing and expansion of process capabilities.

7 dwg