COMPACT HANDRAIL OF COMPOSITE MATERIAL WITH IMPROVED MECHANICAL CHARACTERISTICS Russian patent published in 2020 - IPC B66B23/24 B32B3/04 

FIELD: production of composite materials.

SUBSTANCE: invention relates to handrails. Technical result is achieved in a handrail, which comprises a frame having a first side portion, a second side portion spatially separated from the first side portion, and a central portion having a constant thickness and located between the first and second side portions. At the same time on the first and second side sections the frame decreases in thickness. Central section of the frame sets the upper inner surface, and the first and the second side sections set the first and the second concave inner surfaces adjoining the upper inner surface on both sides. Inside the central section of the frame there is an extension limiter. External layer is attached to the frame, which has a first side portion covering the first side portion of the frame, a second side portion covering the second side portion of the frame, and central part having constant thickness and located between first and second side parts, adjoining to central section of frame. At that, central part of external layer sets upper outer surface, and first and second side parts of external layer are set accordingly: first and second convex outer surfaces adjacent to upper outer surface on both sides thereof, first and second side inner surfaces located opposite each other, and first and second lower inner surfaces located, respectively, between first/second concave inner surfaces and first/second lateral inner surfaces. Sliding layer is attached to upper inner surface and to first and second concave inner surfaces. At the same time in the handrail centered along the width of the handle, the height of its wide part measured between the upper outer surface and the lower surface of the sliding layer is less than approximately 8.0 mm. Frame is formed from the first thermoplastic material, and the external layer is formed from the second thermoplastic material, besides, the first thermoplastic material is harder than the second thermoplastic material. First thermoplastic material has a tensile modulus of 100 % of 12–15 MPa and a hardness in range of 93–96 HSA.

EFFECT: technical result is reduction of handrail dimensions and weight.

31 cl, 10 dwg, 9 tbl