Patent ID: 7497053
Filing Date: 2009-03-03
Classification: E02D,E04H

Abstract:
1. A system for anchoring an object in the ground comprising: a stake including: a tube with at one end a drive-in spike and at the other end a tube head, said tube having a tube wall and being conceived to be inserted with its drive-in spike first, along a drive-in direction into the ground; a central support rod which is axially arranged within said tube, wherein it is axially guided in translation and prevented from rotating, said central rod having an upper end near said head of said tube and a lower end near said drive-in spike of said tube, said upper end being equipped with a first coupling means; at least two deformable anchoring claws, each of said anchoring claws having one end which is borne by said lower end of said central support rod and another end passing through a through opening in said tube wall near said drive-in spike, said through openings having a geometry such that they cause said anchoring claws to deploy at an angle along said tube in the opposite direction to said drive-in direction when an axial traction is exerted on said central support rod in the opposite direction to said drive-in direction; and means for employing said anchoring stake including: a threaded rod for exerting said axial traction on said central support rod, said threaded rod including a first end and a second end, said first end being equipped with a second coupling means able to collaborate with said first coupling means at said upper end of said central support rod; and a nut screwed on said second end of said threaded rod, wherein, for exerting said axial traction on said central support rod in the opposite direction to said drive-in direction, said second coupling means is coupled to said first coupling means equipping said upper end of said support rod, and said nut screwed on said upper end of said threaded rod is rotated in a first direction while it bears on said tube head.