| 摘要 |
FIELD: personal use articles. ^ SUBSTANCE: invention relates to flexible hoses for vacuum cleaners. The flexible hose contains a shell and corrugation, made on the outer peripheral surface of the hose shell with predetermined intervals, and intended to give the elasticity to the flexible hose. Each corrugation contains the entry section made inclined at an angle towards the outer peripheral surface of the hose shell, and the end area formed vertically to the outer peripheral surface of the hose shell passing from the entry section and connecting through it with the interior of the hose shell. ^ EFFECT: noise reduction formed by the flow of air inside the hose, improvement of elasticity and flexibility of the hose. ^ 21 cl, 9 dwg |
