| 摘要 |
A stud extractor for removing a stud embedded in a structure includes a shaft having an end portion adapted to be grasped by a tool and a body having a plurality of longitudinally-extending, convex camming surfaces and a pin having a plurality of rod portions positioned adjacent to the camming surfaces and joined by bridge elements to form a pocket for receiving the body of the shaft. The pin and shaft are inserted into a bore formed in a stud to be extracted and the shaft is rotated relative to the pin and stud. This causes the camming surfaces to jam the rod portions of the pin against the wall of the bore to prevent further relative rotation and cause the stud to rotate with the shaft. In a preferred embodiment, the pin includes an upper lip which prevents the pin from sliding completely into the bore of the stud.
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