Removable deep set drop-in anchor

A drop-in anchor comprising:

• a sleeve having a threaded region having an internal thread formed therein and a split region having at least four longitudinal channels formed therein defining four substantially identical sections, the sleeve having an upper lip, the split region having inwardly tapered inner walls;
• a plug configured for engagement with the sleeve at the split region, the plug having a top surface and defining a tapered shape;
• a shoulder bolt having a threaded portion, a head and an intermediate region between the threaded region and the head, the shoulder bolt defining a shoulder at the intermediate region, the shoulder bolt having a through-bore extending longitudinally therethrough, the threaded portion configured for threaded engagement with the sleeve threaded region, the shoulder bolt configured to that when the threaded portion is threadedly engaged with the sleeve, the shoulder rests on the sleeve upper lip;
• and
• a setting member, the setting member having an elongated body and a head, the elongated body configured for insertion into the shoulder bolt bore and for engagement with the plug top surface, the setting member head being spaced from the shoulder bolt head before the setting member is driven into the plug driving the split region sections axially outward, and contacting the bolt head when the setting member is driven into the plug driving the split region sections axially outward.

A method for securing an anchor in an opening formed in a structure, comprising the steps of:

• inserting a plug having tapered walls and a top surface into a sleeve, the sleeve having a split region and a threaded region, the split region defining sections, the sleeve having an upper lip;
• threading a shoulder bolt into the sleeve, the shoulder bolt defining a thread and a having a head and a shoulder, the bolt having a through-bore therein, the bolt being threaded so that the shoulder contacts the lip of the sleeve;
• positioning the sleeve and the bolt in the opening in the structure;
• positioning a setting member in the bolt through-bore;
• forcing the setting member into contact with the top surface of the plug to drive the split region sections axially outward.