FIELD: technological hatches.
SUBSTANCE: invention relates to technological hatches installed in the opening of a wall, ceiling or floor, in particular to inspection or revision hatches. The device contains a technological hatch frame installed in the opening. The frame includes a supporting structure fixed in the opening and a frame on which the facing material is fixed. The frame is pivotally connected to the supporting structure with the possibility of rotation in such a way that when the frame is opened, a part of its facing material is inside the opening. The edge of the fixed facing material, forming a gap with the mentioned part of the facing material, is made with a bevel of at least twenty degrees.
EFFECT: increased strength.
6 cl, 11 dwg
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|---|---|---|---|
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|
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