GLASS-REINFORCED PLASTIC TUBE - ENVELOPE Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: tube-envelope includes load-bearing layers, bearing radial stiffeners made from glass-reinforced fabric and polymer binder with warp threads located circumferentially and weft threads located axially and outer load-bearing brackets. Load-bearing layers are made at the following volumetric ratios of weft threads in axial direction and warp threads in circumferential direction 2:1 to 1.25:1 at volumetric ratios of warp and weft threads of bearing circular stiffeners 15:1 to 10:1. EFFECT: enhanced reliability. 3 dwg