Claims
- 1. A manually actuated liquid sprayer comprising a nozzle containing a discharge orifice for discharge under pressure of a divergent plume of liquid spray in a downstream direction, and a ported element selectively movable between a retracted position and an extended position at which the element lies in the path of the spray plume for mitigating the spray, the element having a cylinder with a smooth inner wall defining a turbulence chamber coaxial with the discharge orifice, a transversely extending perforate wall located in said cylinder, said perforate wall having an open port of a size greater than that of the discharge orifice and being coaxial therewith, and said perforate wall comprising first and second sets of ribs respectively lying in first and second parallel planes, said ribs of said first set being contiguous to said ribs of said second set, said ribs being mutually spaced apart in each said set to define uniformly sized openings therebetween, said ribs of both said sets having flat surfaces facing upstream and lying perpendicular to a central axis of said cylinder for generating foam as the foam impacts against said flat surfaces, the element being mounted on the nozzle for axial movement relative thereto between said retracted position at which the liquid spray passes through the open port without influence from any portion thereof, and said extended position at which the liquid spray impacts against said smooth inner wall to mix with air in the chamber to create foam while passing through said perforate wall which enhances the creation of foam ejected from a downstream end of said cylinder.
- 2. The liquid sprayer according to claim 1, wherein the element is mounted for telescoping sliding movement relative to the nozzle.
- 3. The liquid sprayer according to claim 1, wherein said ribs of said first and second sets are rectangular in cross-section, the longer sides of said ribs extending in said downstream direction.
- 4. A manually actuated liquid sprayer comprising a nozzle containing a discharge orifice for discharge under pressure of a divergent plume of liquid spray in a downstream direction, and a ported element selectively movable between a retracted position and an extended position at which the element lies in the path of the spray plume for mitigating the spray, the element having a cylinder with a smooth inner wall defining a turbulence chamber coaxial with the discharge orifice, a transversely extending perforate wall located in said cylinder, said perforate wall having an open port of a size greater than that of the discharge orifice and being coaxial therewith, and said perforate wall comprising first and second sets of spaced apart ribs respectively lying in first and second parallel planes and extending a common direction, said ribs of said second set being equally spaced apart and offset relative to said ribs of said second set a distance substantially equal to one-half the spacing of said ribs of said first set, the element being mounted on the nozzle for axial movement relative thereto between said retracted position at which the liquid spray passes through the open port without influence from any portion thereof, and said extended position at which the liquid spray impacts against said smooth inner wall to mix with air in the chamber to create foam while passing through said perforate wall which enhances the creation of foam ejected from a downstream end of said cylinder.
- 5. The liquid sprayer according to claim 4, wherein said element further comprises a third set of spaced ribs interconnecting with and extending in a direction perpendicular to said ribs of said first and second sets.
- 6. The liquid sprayer according to claim 5, wherein said first set is located downstream of said second set, opposing sidewalls of said ribs of said first set converging in said downstream direction, and opposing sidewalls of said ribs of said second set diverging in said downstream direction.
- 7. The liquid sprayer according to claim 4, wherein said first set is located downstream of said second set, opposing sidewalls of said ribs of said first set converging in said downstream direction, and opposing sidewalls of said ribs of said second set diverging in said downstream direction.
RELATED APPLICATION
This application relates to application Ser. No. 08/392,397, filed Feb. 22, 1995, as a continuation-in-part of Ser. No. 08/352,805, filed Dec. 1, 1994, and now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
268733 |
Dec 1965 |
AUX |
60-27481 |
Aug 1985 |
JPX |