B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
81/36
B25B 27/18 (2006.01) B25B 13/44 (2006.01) B25B 23/10 (2006.01)
Patent
CA 1246357
ABSTRACT A tool for removing or installing a threaded stud to an associated stud mounting member having an elongated sleeve member with an internally threaded gripping end and an internally tapered stud locking end. A pilot member having a closed drive end, and an internally threaded bore end is provided. The drive end has an external angle of taper less than the internal angle of taper of the sleeve member, in which the angle of taper increases as it is directed toward the internally threaded bore end. The bore end of the pilot member has multiple finger splits directed from the open end to the closed end. When the tool is in use, the pilot is co-axially disposed in the sleeve member, with the bore end of the pilot threaded onto the end of a stud. A plug member is provided, having a driving end and an externally threaded portion adapted to engage the internally threaded gripping end of the sleeve member and to axially abut the closed end of the pilot member. When the plug member is rotated within the sleeve, the plug member urges the pilot member co-axially along the sleeve toward the bore end until the external taper of the pilot member engages the internal taper of the sleeve member thereby forcing the finger splits on the pilot member to grip and frictionally lock on the free end of a stud. When the gripping end of the sleeve member is reversed, the stud is unthreaded from the associated stud mounting member. When the plug member is rotated in the opposite direction, the taper of the sleeve member and the taper of the pilot member may be disengaged by hand, thereby releasing the finger splits on the pilot member allowing the stud to be unthreaded from the tool.
518478
Eem Rachanski Enterprises Inc.
Smart & Biggar
LandOfFree
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