Patent ID: 6431517
Filing Date: 2002-08-13
Classification: E04B,E04G

Abstract:
A reusable jig for positioning and stabilizing an anchor bolt in wet, curing construction material in a circumstance where that material takes the form of a body of material having a generally horizontal upper surface, and two, opposite, upright side surfaces which intersect the upper surface, and which are supported between a pair of construction form elements, said jig comprisingan elongate, generally round-cross-section, hollow tube formed with wall structure having (a) a lower end, (b) an upper tapered end which has, progressing upwardly in the tube away from its wall structure's said lower end, a progressively diminishing internal cross-sectional area, all regions of which are smaller in cross-sectional area than that of the upper end of any anchor bolt with respect to which the jig is intended for use, (c) a long axis extending between said ends and (d) at least one elongate slot formed in said tapered upper end, said tube being adapted reversibly to receive, and releasably to grip within its said upper end, the upper end of an anchor bolt in the anchor-bolt size range which is anticipated to be positioned and stabilized by the jig, such gripping of such a bolt being accommodated by said at least one slot which permits elastic (and thus naturally reversible) gripping deformation to occur in the tube's wall structure's said upper end, said at least one slot also affording a view from the outside of the tube to see the upper end of such a bolt in the tube, and a generally planar base joined to said tube adjacent the tube's said lower end, and lying in a plane which is at a defined and predetermined angle relative to the long axis of said tube, said base including an elongate, laterally extending gauge finger, with the base being placeable, during use of the jig, over the upper surface of the wet construction material, and with (a) positioning of said gauge finger relative to one of the two supporting construction form elements defining the lateral position of said tube, and hence of any gripped anchor bolt, relative to the opposite, upright side surfaces of the wet construction material, (b) the predetermined angle which exists between the plane of said base and the long axis of said tube defining the angular disposition of any tube-gripped anchor bolt relative to the construction material, and (c) the visible (through the slot) position of the upper end of the gripped anchor bolt defining the vertical position of the anchor bolt relative to the upper surface of the wet construction material.