Snap-in molded cover assembly for access opening

Claim 1

An integral molded cover and frame for the access opening of a circuit breaker cubicle; said frame comprising a generally flat ring-shaped flange having a first surface for sealing against a flat peripheral region extending from said access opening, and an annular projection axially spaced from said flange and defining, with said first surface of said flange, an annular groove which can snap around the periphery of said access opening; said flange of said frame having a second surface; an integral hinge connecting one edge of said molded cover to one edge of said frame; said cover having an annular ring-shaped flange surface engageable in surface-to-surface, non-telescoping contact with said second surface of said flange of said frame; said cover being rotatable around said hinge between an open and closed position relative to said frame; said cover being coextensive with said frame; said cover terminating completely at its said flat ring-shaped surface; and snap closure means for holding said cover in its said closed position; said frame and said cover having generally rectangular shapes; said snap closure means being disposed only on the side of same frame which is farthest removed from said hinge.