Device for positioning anchorage means
AssigneeBWZ Berg-und Industrietechnik GmbH
InventorsWalter Marsch, Hans Werner
Life of this patent
Estimating the term…
Abstract
A unidirectional mechanism slides along guides within a casing against a spring. A recess in one end of the unidirectional mechanism receives the head of an anchor bolt, and a cover on the casing near that end receives a nut on the anchor bolt. Turning the casing in a counterclockwise direction engages the one-way mechanism, turning both the anchor bolt and the nut. When the anchor bolt is secure, the casing is turned clockwise. The one-way mechanism automatically disengages and the nut is turned on the anchor bolt without turning the anchor bolt.
Claims12
A device for fixing of an anchor bolt or the like having at its bolt and projecting out of the bore hole a screw thread for a nut for securing a plate and means for transmission of rotational movement of a tool, the device comprising a rotatable casing which has at one end an opening with a cross-section corresponding to the flat-spacing of the nut for reception of the nut and in which casing is secured non-rotatably an axially slideable bush and a rotation-direction locking ratchet mounted in the bush and movable with the bush axially relative to the casing, the ratchet having an outer part, the outer part being fixed in the bush, and the bush and the casing having complementary external and internal cross section, respectively, to prevent relative rotation thereof and the ratchet having an inner part with a recess adapted for insertion and entrainment of the anchor bolt end, the casing having a base plate at an end opposite the opening and a spring between the base plate and the bush which holds the ratchet urging the bush and the ratchet away from the plate toward the opening.
Dependencies are inferred from the claim text.