Patent ID: 7524153

Claim:
A fitting anchored to a base member of a mineral composition, wherein the fitting has a base and a threaded portion upstanding from the base, the base member has a surface and a cylindrical cavity that opens from the surface of the base member and has a bottom surface, the cylindrical cavity has a diameter and a depth, a cylindrical plug-element of said mineral composition is located within the cylindrical cavity, the cylindrical plug-element having a top and an underside and having a diameter and a thickness substantially the same as the diameter and depth respectively of the cylindrical cavity for close-fit location within the cylindrical cavity with the top of the plug-element substantially flush with the surface of the base member and the underside of the plug-element abutting the bottom surface of the cavity, adhesive film within the cylindrical cavity for retaining the cylindrical plug-element within the cylindrical cavity with the top of the cylindrical plug-element substantially flush with the surface of the base member and the underside of the plug-element abutting the bottom surface of the cavity, the underside of the cylindrical plug-element has a recess therein, and wherein the fitting is trapped in the cylindrical cavity under the plug-element with its threaded portion extending lengthwise of the axial bore through the plug-element and its base engaged in the recess in the underside of the plug-element for precluding movement of the fitting relative to the plug-element.