Patent ID: 6691357
Filing Date: 2004-02-17
Classification: B25F

Abstract:
In a tool including a handle and at least one folding blade having a base defining a pivot bore and movable about a pivot shaft mounted in said handle between respective extended and folded positions, said tool having a blade locking mechanism including a notch in said base of said blade, a catch body carried on a latch release lever movable with respect to said handle about a latch pivot, and a spring urging said catch body toward a position of engagement in said notch, the improvement comprising:(a) said catch body having a rear face and said notch having a corresponding anti-folding face; (b) said catch body having a front face and said notch including a corresponding abutment surface, said front face and said abutment surface having respective heights greater than a height of said rear face and said anti-folding face; and (c) said notch having a convexly arcuate bottom surface spaced apart from said pivot shaft by a radial distance, and said catch body having an inner surface, between said rear face and said front face, having a shape corresponding to said bottom surface of said notch.