Patent ID: 6904833
Filing Date: 2005-06-14
Classification: B25B,F16B

Abstract:
1. A closed asymmetric spline wrench for turning a threaded fastener, the fastener having a fastener central axis and generally radially outwardly extending fastener splines from the fastener central axis and separated by recesses, each fastener spline having a tightening surface for tightening the fastener in response to the application of sufficient torque to the tightening surface, and a loosening surface for loosening the fastener in response to the application of sufficient torque to the loosening surface; said wrench having a wrench central axis, and comprising: a body having a plurality of wrench splines extending generally radially inwardly with respect to the wrench central axis and separated by alternating radial recesses, each of said wrench splines fitting in a respective recess of the fastener for engaging the fastener splines for applying torque to the fastener splines to turn the fastener; the central wrench axis being generally coaxial with the central fastener axis when said wrench splines are fitted in the fastener recesses;