FIELD: machine building.
SUBSTANCE: contact head for grip of porous substrate has at least two sets of rods each of them includes lots of rods arranged as a complex of parallel rows of rods located at preset angle, at that rods of neighbouring rows are arranged so that angles of rods inclination in the row are antisymmetric to angles of rods inclination in the neighbouring row of rods. Rods of one row upon extension move together in the same direction determined by inclination angle of this row of rods, and neighbouring rows of rods upon extension move in opposite longitudinal directions against each other. Rods sets may be extended and retracted using one power drive.
EFFECT: uniform application of fluid and its effective use.
20 cl, 8 dwg, 5 tbl, 22 ex
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