FLEXIBLE HOSE WITH KNITTING REINFORCEMENT AND PROCESS FOR ITS MANUFACTURING Russian patent published in 2017 - IPC F16L11/08 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a flexible hose and method of its production. Flexible hose with knitted reinforcement, including at least one inner tubular layer (2) made from polymer material, which defines longitudinal axis (X), and at least one knitted reinforcing layer (4), wound on said inner tubular layer (2) and having at least first (5) and second (6) series of yarns, spiral wound on said inner tubular layer (2) and connected together, in order to form respective mesh courses (8, 8', 8'',…; 9, 9;', 9'') inclined with respect to said axis (X), and respective mesh wales (10, 10', 10'',…) substantially parallel to said axis (X). Mesh wales (10, 10', 10'',…) of said first series of yarns (5) are laid on mesh wales (10, 10', 10'',…) of said second series (6), to obtain knitted reinforcing layer (4).

EFFECT: flexible hose has high and uniform resistance to pressure and is not susceptible to twisting during pressure change.

12 cl, 11 dwg