Spray head and air atomizing assembly
First Claim
Patent Images
1. A spray device for delivering an application fluid to a substrate comprising:
- a centrally located application fluid orifice;
an atomizing assembly surrounding said orifice and including;
an inner element with an outer frustoconical surface portion, said outer frustoconical surface portion converging toward said forward end;
an outer element with an inner frustoconical surface portion, said inner frustoconical surface portion converging toward said forward end, said inner and outer frustoconical surface portions being in substantial engagement with each other, and a plurality of grooves in one of said outer frustoconical surface and said inner frustoconical surface portion, each of said grooves extending in a spiral pattern along said one frustoconical surface toward the forward end of said one frustoconical surface portion, said plurality of grooves in combination with the other of said frustoconical surfaces defining a plurality of spiral atomizing fluid flow passages, each of said grooves having a cross-sectional configuration at the forward end of said one frustoconical surface portion in which the circumferential dimension of said groove is at least twice the radial dimension of said groove.
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Accused Products
Abstract
A spray head and air atomizing assembly for providing atomizing air in an air sprayer or other delivery device in which the atomizing assembly includes converging, spiral atomizing fluid passageways.
14 Citations
20 Claims
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1. A spray device for delivering an application fluid to a substrate comprising:
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a centrally located application fluid orifice;
an atomizing assembly surrounding said orifice and including;
an inner element with an outer frustoconical surface portion, said outer frustoconical surface portion converging toward said forward end;
an outer element with an inner frustoconical surface portion, said inner frustoconical surface portion converging toward said forward end, said inner and outer frustoconical surface portions being in substantial engagement with each other, and a plurality of grooves in one of said outer frustoconical surface and said inner frustoconical surface portion, each of said grooves extending in a spiral pattern along said one frustoconical surface toward the forward end of said one frustoconical surface portion, said plurality of grooves in combination with the other of said frustoconical surfaces defining a plurality of spiral atomizing fluid flow passages, each of said grooves having a cross-sectional configuration at the forward end of said one frustoconical surface portion in which the circumferential dimension of said groove is at least twice the radial dimension of said groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An atomizing assembly for a spray gun comprising:
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a first member having an outer frustoconical surface with a forward end;
a second member having an inner frustoconical surface with a forward end, said first member and said second member being positionable relative to one another so that said outer frustoconical surface and said inner frustoconical surface are in substantial engagement; and
a plurality of spiral grooves in one of said inner and outer frustoconical surfaces extending to the forward end of said one frustoconical surface, each of said grooves having a cross-sectional configuration at the forward end of said one frustoconical surface with a radial dimension and a circumferential dimension in which said circumferential dimension is at least twice said radial dimension. - View Dependent Claims (12, 13, 14)
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15. An air atomized application device for applying an application fluid to a substrate comprising:
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an elongated application fluid supply tube having a rearward end for connection to a source of pressurized application fluid and having a forward nozzle end with a nozzle opening;
an atomizing fluid body at the forward end of said supply tube, said atomizing fluid body having an inlet port for connection with a source of pressurized atomizing fluid and a chamber in communication with said inlet port; and
an atomizing member including a central opening for receiving said nozzle end and a plurality of spiral flow paths in communication with said chamber and extending in a converging, spiral pattern toward its forward end, each of said flow paths having a circumferential dimension and a radial dimension in which said circumferential dimension is at least twice said radial dimension. - View Dependent Claims (16, 17, 18)
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19. An air atomized application device for application of an application fluid to a substrate comprising:
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an application fluid supply tube having a rearward end for connection to a source of pressurized application fluid, a tubular body and a forward end having a nozzle opening;
a retaining nut slidable along said tubular body;
a selectively removable retaining member positioned on said tubular body between said retaining nut and said forward end;
an atomizing fluid tip at said forward end, said atomizing fluid tip having an outer conical surface;
an end cap having an inner conical surface mating with said outer conical surface and being connectable to said retaining nut to define an atomizing fluid chamber, said end cap further including a port for connection to a supply of pressurized atomizing fluid; and
one of said inner and outer conical surfaces including a plurality of grooves to define a plurality of atomizing fluid passages. - View Dependent Claims (20)
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Specification