Smart hook with tumbler clasp mechanism

Abstract

An exemplary inventive attachment device coaxially combines an inner near-cylinder and an outer near-cylinder so that the inner near-cylinder is rotationally adjustable with respect to the outer near-cylinder. The inner and outer near-cylinders are each approximately 'C'-shaped so as to be provided with a longitudinal void. The inner near-cylinder has been rotated to an “open” position when the respective voids of the inner and outer near cylinders are approximately aligned so as to describe essentially the same void. The inner near-cylinder has been rotated to a “closed” position when the inner near cylinder's void is approximately opposite (e.g., approximately 180 degrees apart from) the outer near cylinder's void. While the inner near-cylinder is in the closed position, a spring device exerts a force upon a blocking member so as to move the blocking member at least partially inside the inner near cylinder's void, the blocking member thereby constituting an impediment that prohibits rotation of the inner near-cylinder.