ACCESS HOLE Russian patent published in 2010 - IPC E06B5/01 

FIELD: construction.

SUBSTANCE: invention refers to room finishing works, including by means of tile, of bath-rooms, toilet rooms and other rooms of dwelling and industrial rooms, where the access to hidden communications or engineering structures is required, and deals with the access hole design to be finished with various finishing materials for ceiling, wall and floor installation. Access hole includes external frame forming a closed circuit, a door made in the form of internal frame forming a closed circuit, a hinge and a latch. Door is attached to the hinge by means of the first axes lying on one straight line, and has the possibility of being rotated about the first axes. Hinge is connected to external frame by means of the second axes lying on the other straight line, and has the possibility of being rotated about the second axes. Latch is fixed on external frame. Door has a projection made so that it can interact with the latch, and teeth to be engaged with mating retaining projections of external frame. On each of the second axes there located is torsion spring interconnected with external frame and hinge. On external frame there can be made locking members to restrict the turn of the hinge.

EFFECT: maintaining integrity of the pattern of finished surface, providing the possibility of finishing the access hole door with the tile with the size which is bigger than that of access door, excluding jamming, providing easy operation, decreasing the construction weight.

3 cl, 5 dwg