Patent ID: 8978253
Filing Date: 2015-03-17
Classification: B26B,F16F

Abstract:
1. A selectively removable modular spring assembly adapted for interconnection to a spring activated folding tool having an implement rotatably interconnected to a handle about a pivot axis, the modular spring assembly comprising: a cup comprising a base and a sidewall extending perpendicular to the base, the sidewall defining an interior space, and a mandrel extending perpendicular to the base an positioned radially inward of the sidewall, the mandrel defining a minimum inside diameter of the torsion spring and the mandrel comprising a groove extending lengthwise in an exterior surface, and wherein the groove is configured to receive the first end of the torsion spring to interconnect the first end of the torsion spring to the cup; and a torsion spring at least partially disposed in the interior space of the cup, the torsion spring having a first end and a second end, the first end of the torsion spring interconnected to the spring module, and the second end of the torsion spring configured to be operatively interconnected to the implement to pivot the implement about the pivot axis.