Expandable jaw broken bolt extractor

Details Expandable jaw broken bolt extractor Expandable jaw broken bolt extractor

B - Operations, Transporting

25

B

B25B 13/48 (2006.01) B25B 27/18 (2006.01)

Patent

CA 2180646

An extractor (10) for removing a broken bolt stud having a pre-drilled bore from a threaded bore including a cylindrical body (12) having a drive head (14) on one end and expander (16) on the opposite end. A collet (18) is movably attached to the cylindrical body (12) by threads (17) permitting lateral movement of the expander (16) against the gripping means (26) causing them to expand and engage the pre-drilled bore. Rotation of the expander (16) permits removal of the broken bolt stud due to the friction between the extractor (10) and the stud.

L'invention concerne un extracteur (10) destiné à extraire un épaulement cassé de boulon ayant un trou fileté, foré au préalable. L'extracteur comporte un corps cylindrique (12) ayant une tête d'entraînement (14) à une extrémité et un dispositif d'extension (16) sur le côté opposé. Un manchon (18) est fixé mobile au corps cylindrique (12) par un filetage (17) permettant un mouvement latéral du dispositif d'extension (16) contre des moyens de préhension (26), obligeant ces derniers à s'écarter et venir au contact de l'alésage foré au préalable. La rotation du dispositif d'extension (16) permet d'enlever l'épaulement cassé du boulon, grâce à la friction entre l'extracteur (10) et l'épaulement du boulon.

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