Importance

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Abstract

For a preset having a cover and an annular ring supporting the cover, structure to releasably hold the cover in closed position and to move the cover with respect to the ring as between closed and open positions, the structure including a deforming surface on the ring; a deformable head on the cover to engage the surface, the engagement causing the deformable head to deform and generate friction forces sufficient to hold the same against said surface means for holding the cover in closed position but permitting the deformable head to slide relative to the surface means to provide for the cover to be moved out of or into the closed position; an elongated lifting tab on the cover; and the lifting tab being pivotally mounted for movement between an inactive condition and an active condition, in the latter condition part of the tab extending inwardly of the cover and part of the tab extending outwardly of the cover to be grasped by the fingers for moving the cover from closed to open position.

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First Claim