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US 4,899,936 AGranted
Rotary atomizer with protective shroud
AssigneeThe DeVilbiss Company
InventorRichard Weinstein
Life of this patent
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AssigneeThe DeVilbiss Company
InventorRichard Weinstein
Estimating the term…
A rotary atomizer (20) includes a manifold assembly (22) adapted to be attached to a mechanism for moving the atomizer and an air bearing turbine motor housing assembly (21) releasably secured to the manifold assembly. Sources of pressured fluid for actuating the atomizer and coating fluid are connected to the manifold (29) which has fittings (32, 33, 34, 35, 36) for releasably sealing to apertures (42) in the rear cover (43) of the housing assembly. The opposite end of the housing includes a shaping air cap (24) and a shaping air ring (25) which cooperate to define an annulus for discharging a thin ring of shaping air over the peripheral edge of an atomizer bell (26) to direct fluid particles toward a target. Exhaust air from the turbine motor (46) is vented to the inside of the housing and directed to a chamber (79) behind the atomizer bell to aid in directing the fluid particles. A magnetic speed pickup (103, 104) generates a signal which is coupled through a circuit (105, 106) that electrically isolates the high voltage which is applied to the atomizer to electrostatically charge the coating particles.
A rotary atomizer for coating a workpiece with a coating fluid comprising, in combination, a housing including a hollow shroud having a first and second ends and a rear cover plate attached to said first shroud end, a rotary fluid atomizing device rotatably supported on an interior surface of said cover plate with said device extending from said second shroud end, passageway means extending through said housing for supplying coating fluid to said atomizing device, said passageway means having an inlet adjacent an exterior surface of said cover plate and having an outlet adjacent said atomizing device, a manifold including first and second surfaces with inlet means at said first manifold surface adapted to be connected to a source of coating fluid and outlet means at said second manifold surface connected to said passageway means inlet, and fastener means on said housing for releasably securing said housing to said manifold with said cover plate adjacent said second manifold surface.
Dependencies are inferred from the claim text.