Rotary atomizer coater
AssigneeChampion Spark Plug Company
InventorsRichard Weinstein, James W. Davis, Robert K. Campbell
Life of this patent
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Abstract
A coating applicator is disclosed which includes a rotary atomizer on a driven shaft. The shaft operates at high speeds. Coating material is supplied to the rotary atomizer. A pair of spaced bearings rotatably mount the shaft and a seal assembly is positioned between the rotary atomizer and the front bearing. The seal assembly includes a bearing cover having a cutting edge. A mating cap member surrounds the shaft and has a sealing shoulder which is engaged by the cutting edge. Exhaust air is used to cool the bearings, pressure the interior of the applicator and enhance the seal assembly.
Claims9
A coating applicator comprising, in combination, a rotary atomizer mounted on a shaft, drive means operatively connected to said shaft to rotate said shaft at high speeds, means for supplying coating material to said rotary atomizer, a pair of spaced bearings rotatably mounting said shaft and a seal assembly between said rotary atomizer and one of said bearings, said seal assembly including a cylindrical bearing cover, said bearing cover including a circular cutting edge adjacent said shaft, and a mating cap member surrounding said shaft adjacent said bearing cover, said cap member defining a circular sealing shoulder, said cutting edge of said bearing cover engaging and abraiding into said sealing shoulder, whereby coating material is sealed from said one of said bearings, said bearing cover including a circular surface extending outwardly and said cap member including a cylindrical outer wall having a tapered rear end, said tapered rear end engaging said circular surface of said bearing cover.
A coating applicator comprising, in combination, a rotary atomizer mounted on a shaft, drive means operatively connected to said shaft to rotate said shaft at high speeds, means for supplying coating material to said rotary atomizer, a pair of spaced bearings rotatably mounting said shaft and a seal assembly between said rotary atomizer and one of said bearings, said seal assembly including a cylindrical cover, said cover including a circular cutting edge adjacent said shaft, and a mating cap member surrounding said shaft adjacent said cover, said cap member defining a circular sealing shoulder, said cutting edge of said cover engaging and abraiding into said sealing shoulder, said cap member and said cover defining adjacent surfaces forming an outwardly inclined slinger chamber and an axial seal mounted by said cover adjacent said shaft.
Dependencies are inferred from the claim text.