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US 5,769,276 AGranted
Powder atomizer
AssigneeTerronics Development Corporation
InventorGeorge R Alexander
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AssigneeTerronics Development Corporation
InventorGeorge R Alexander
Estimating the term…
An improved powder atomizer comprising a cylindrical pan, a cylindrical resiliently deformable element, which is journaled for rotation about an axis within the pan. The pan is mounted coaxially of the element. The element and pan define a cylindrically shaped venturi therebetween into which powder is fed. The venturi has an inlet and outlet radially spaced apart. Structure is provided for rotating the element within the pan at speeds in excess of that required to throw the powder from the element by centrifugal force. The element draws ambient air through the venturi and atomizes and deagglomerates powder fed into the venturi inlet thereby forming a uniformly flowing cloud of particulate material which is uniform both longitudinally and laterally of said axis. The invention also provides an atomizer feeder and an atomizer feeder combination deagglomerator combination with a feeder such a disclosed in U.S. Pat. No. 5,314,090 which is particularly useful in wide web coating applications to produce a particulate cloud which is uniform both laterally and longitudinally of the web and uniform in both particulate distribution and particulate size throughout the uniformly flowing cloud.
A powder atomizer comprising a pan, a cylindrical element, said element being journaled for rotation about an axis, said pan being cylindrical and positioned coaxial of said element, said pan partially surrounding said element, said element and pan defining a cylindrical venturi therebetween into which powder is fed, said venturi having an inlet and an outlet radially spaced apart, means for rotating said element within said pan at speeds in excess of the speed required to throw powder from said element by centrifugal force, said element drawing gas through said venturi and atomizing powder fed into said inlet to produce a uniform cloud of particulate material.
A powder atomizer comprising a material feeder having a hopper having a discharge opening therein, a resiliently deformable cylindrical feeding element positioned in said opening, a housing surrounding said element, said housing being spaced from said element without deforming said element, said housing mounted to said hopper, said element mounted for rotation in said opening at speeds below that necessary to discharge material from said element by centrifugal force, said element occluding said opening, said element being in contact with and receiving therein the material in said hopper, whereby rotation of said element a volume of material is metered through said opening, and an atomizer comprising a pan, a cylindrical atomizer element, said atomizer element being journaled for rotation about an axis, said pan being cylindrical and coaxial of said atomizer element, said pan partially surrounding said atomizer element, said atomizer element and said pan defining a venturi therebetween with an inlet and an outlet, said inlet being below said discharge opening, whereby said material from said hopper is fed into said venturi inlet, means for rotating said atomizer element with in said pan at a speed in excess of the speed necessary to discharge material from said atomizer element by centrifugal force, said element drawing gas through said venturi and atomizing said powder from said outlet into the form of a uniformly moving cloud of particulate material.
Dependencies are inferred from the claim text.