Patent ID: 6675709
Filing Date: 2004-01-13
Classification: B41F,B41P

Abstract:
A bar for supplying a fluid mixture of pressurized air and detergent liquid in equipment for cleaning rubber-coated cylinders and inking rollers of printing machines, said bar comprising:an elonaate flat side; a plurality of mixture supply holes distributed uniformly along a length of said flat side; a branching supply circuit by which the fluid mixture is successively divided and ultimately delivered in equal parts to respective said supply holes, said branching supply circuit including a) channels formed on said flat side said channels including a first delivery channel to which the fluid mixture is introduced, respective associated downstream delivery channels into which the then divided fluid mixtures from said first delivery channel or from a said downstream delivery channel upstream therefrom are respectively delivered, said downstream delivery channels including final delivery channels by which respective equal parts of the fluid mixture are respectively finally delivered to a respective said mixture supply hole, respective Y-shaped bifurcations which connect said first delivery channel and said downstream delivery channels to one another and which perform the successive divisions of the fluid mixture, and a respective restriction provided at a downstream end of each respective said delivery channel which is upstream from an associated said Y-shaped bifurcation, each said restriction being shaped to guide the fluid mixture in the delivery channel to a mid-line of a point of the associated said Y-shaped bifurcation and to induce a formation of a vortex of the fluid mixture which homogenizes the fluid mixture, so that the fluid mixture is distributed with equal proportions of air and liquid in both split delivery channels from the associated said Y-shaped bifurcation; b) a flat seal which covers said channels; and c) a cover plate which caps said flat seal, thus converting said channels into closed ducts.