Patent ID: 7131175
Filing Date: 2006-11-07
Classification: B25B,Y10T

Abstract:
1. An extraction tool for extracting spiral threaded inserts, the extraction tool comprising: an elongated basic body having a first end, a second end, and a longitudinal axis; an extracting tip on the body first end, the extracting tip having a front end and narrowing toward the front of the extraction tip, the extracting tip for being inserted with a cutting action into the threaded insert to be extracted; means for turning the extraction tool about the body longitudinal axis on the body second end; wherein at least a section of the extracting tip has the shape of a steep-angle truncated pyramid, such that when the extracting tip plunges into the threaded insert, edges of the extracting tip pyramid will press into the threaded insert and connect the extracting tip to the threaded insert substantially over the entire depth to which the extracting tip plunges into the threaded insert; and wherein the extracting tip comprises a true square cross section.