Patent ID: 7237464
Filing Date: 2007-07-03
Classification: B25B

Abstract:
1. A fastening tool for tightening/untightening screw threaded fasteners such as bolts or nuts having a head formed with a series of at least three first cavities deployed therearound, the tool comprising: at least three peanut-shaped displaceable locking bodies having a first substantially spherical portion, a second substantially spherical portion and a restricted neck portion therebetween; the said first cavities being configured to receive the said first spherical portions; a seat member formed with a series of at least three second cavities configured to receive the said second spherical portions; and means for rocking the locking bodies about their neck portions from a position wherein the second spherical portions are seated in the second cavities, into a position wherein the first spherical portions are seated in the said first cavities, and vice versa.