Importance

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Abstract

A plug for operatively connecting an extremity of a torsion spring to another corresponding component of a counterbalancing assembly. The plug includes a collar and at least one connecting flange. The collar defines a longitudinal axis, and includes first and second opposite ends, the collar being shaped and sized for removably mounting onto the extremity of the torsion spring. Each connecting flange is provided on the first end of the collar for connecting the plug onto the corresponding component of the counterbalancing assembly. The improvement lies in that the collar has first and second sections, the first section being adjacent to the first end of the collar and having a peripheral surface being provided with threading for threadedly engaging the extremity of the torsion spring, and the second section being adjacent to the second end of the collar and having a peripheral surface being tapered with respect to the peripheral surface of the first section so as to minimize interference with an internal portion of the torsion spring when the collar is removably mounted onto the extremity of the torsion spring.

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First Claim