TECHNOLOGICAL HATCH FRAME Russian patent published in 2023 - IPC E06B3/36 E06B5/00 E06B5/01 

FIELD: technological hatches.

SUBSTANCE: invention relates to technological hatches installed in the opening of the wall, ceiling or floor of an angular shape, in particular to inspection or revision hatches to provide access to various hidden voids, rooms, communications, devices. The frame of the technological hatch contains a frame and a supporting structure. The frame is made in the form of two four-sided flat contours connected at a right angle. The supporting structure is made of steel closed profile in the form of two L-shaped supports. The end of one of the sides of each mentioned L-shaped support is pivotally connected to the mentioned frame so that in the closed position the projection of the mentioned frame repeats the projection of the mentioned L-shaped supports. The end portions of the sides of said L-shaped supports in the area of ​​said hinged connection contain bevels located opposite to the opening direction of said frame.

EFFECT: increased strength of the technological hatch frame.

7 cl, 8 dwg