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US 5,699,967 AGranted
Airless spray gun diffuser
AssigneeCampbell Hausfeld/Scott Fetzer Company
InventorsRoger Conatser, Victor R. Jarboe
Life of this patent
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AssigneeCampbell Hausfeld/Scott Fetzer Company
InventorsRoger Conatser, Victor R. Jarboe
Estimating the term…
An improved poppet valve seat having a predetermined through-bore restricting orifice operating in conjunction with a fluid diffuser and diffuser flow passages thereof reduce the velocity of fluid ejected from the spray gun below levels which are hazardous for potential injection into the skin of a user or the like when the spray tip and associated safety guards are removed from a spray gun. However, while the velocity of the paint passing through the spray gun is reduced to avoid the injection hazards, the atomization pressures required for cohesive and complete atomization of the fluid passing through the airless paint sprayer is maintained to provide an efficient and effective atomization of the fluid in an airless sprayer.
In an airless fluid spray gun having a fluid valve and a removable spray orifice for atomizing fluid in a spray pattern:
In an airless fluid spray gun having a fluid valve and a removable spray orifice for atomizing fluid in a spray pattern:
In an airless fluid spray gun having a fluid valve and a removable spray tip for atomizing fluid in a spray pattern:
In an airless fluid spray gun having a fluid valve and a removable spray orifice for atomizing fluid in a spray pattern:
In combination a fluid flow restricter and a fluid diffuser for an airless fluid spray gun having a spray tip, said restricter and said diffuser being adapted for disposition in said spray gun upstream of said spray tip, said diffuser having a first cross-sectional flow area and said restricter having a second cross-sectional flow area wherein a ratio of said first flow area to said second flow area is greater than about 2.5.
In combination a fluid flow restricter and a fluid diffuser for an airless fluid spray gun having a spray tip, said restricter and said diffuser being adapted for disposition in said spray gun upstream of said spray tip, said diffuser having a first cross-sectional flow area and said restricter having a second cross-sectional flow area wherein a ratio of said first flow area to said second flow area is greater than about 2.5, wherein said restricter produces a first pressure drop in fluid passing therethrough and said spray tip produces a second pressure drop in fluid passing therethrough, a ratio of said first pressure drop to said second pressure drop is from about 0.025 to about 0.1.
Dependencies are inferred from the claim text.