Patent ID: 6793444
Filing Date: 2004-09-21
Classification: E02D

Abstract:
A mechanical anchor, comprising a tension rod, a fixing unit mounted on the lower end of the tension rod, an anchor unit having a longitndinal axis and being divided into a plurality of longitudinally divided anchor units, the upper end of each of said divided anchor units being connected to said fixing unit via a movable link bar so that the divided anchor units can be moved in respective lateral directions substantially transverse to the longitudinal axis, while being maintained in orientations substantially parallel to the longitudinal axis, said divided anchor units being opened or closed when the divided anchor units are moved in the respective lateral directions, said divided anchor forming a cylindrical shape when closed, said mechanical anchor further comprising a driving member arranged on an inner side of the anchor unit in such manner that the driving member is extended longitudinally in a direction substantially parallel to the longitudinal axis of the anchor unit, and the upper and lower ends of the driving member are connected respectively to each of said divided anchor units via movable link arms.