Patent ID: 8991731
Filing Date: 2015-03-31
Classification: F16L

Abstract:
1. A paint supply system for supplying paint from a reservoir to the surface of a manufactured part, the paint supply system comprising: a pump for pressurizing the paint in order to cause the paint to flow; a hose through which the paint flows; an applicator for applying the paint to the surface of the manufactured part; at least one secondary component selected from the group of filters, restrictors, connectors, tees, manifolds, valves, meters, and regulators having a concave annular surface through which a coupling can be made; and at least one swivel fitting used to couple the secondary component to the hose; the swivel fitting comprising a body having a fluid passage extending from a first end to a second end; an internally threaded fastening sleeve received over the first end capable of receiving and mating with an externally threaded end of the secondary component; the first end having an end face, an external surface, and an internal surface; the end face being an annular flat surface, the external surface being a convex annular surface, and the internal surface being an annular chamfer surface that defines a portion of the fluid passage; and a second end that makes a compression-type connection to the hose; wherein the convex external surface of the first end engages the concave annular surface of the secondary component, thereby, establishing a region of contact; the region of contact being axially spaced along said convex external surface of the first end and said concave annular surface of the secondary component to define a radially expanded portion of the fluid passage at the juncture of said secondary component and said first end; the axial spacing of said region of contact providing a portion of said concave annular surface of the secondary component and a portion of the convex external surface of said first end forming the radially expanded passage portion of the fluid passage wherein interference with flow through the passage is minimized; and wherein the region of contact forms a static seal between the swivel fitting and the secondary component.