Claims
- 1. A foamer nozzle assembly mounted at a discharge end of a trigger sprayer, comprising, an inner cylinder having a smooth inner wall defining a turbulence chamber coaxial with a discharge orifice located in an end wall at said discharge end through which a conical spray is discharged in a downstream direction into said chamber for generating foam as spray particles impact against said smooth inner wall to mix with air in said chamber to form foam bubbles, foam enhancement means of molded plastic construction located in said cylinder adjacent the downstream end thereof, said means 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 further generating foam as the foam bubbles impact against said flat surfaces to further mix with the air in said chamber to create foam ejected from said downstream end of said cylinder.
- 2. The foamer nozzle assembly according to claim 1, wherein said openings are rectangular.
- 3. The foamer nozzle according to claim 1, wherein said ribs of said first and second sets extend in mutually perpendicular directions to define said openings as rectangular.
- 4. The foamer nozzle according to claim 1, wherein said ribs of said first and second sets are rectangular in cross-section, the longer sides of said ribs of said first and second sets extending in said downstream direction for enhancing formation of foam as the foam bubbles concentrated in the turbulence chamber first impact against the flat surfaces of one of said sets of ribs, glide along the longer sides thereof which accelerate the turbulence flow as the foam bubble then impact against the flat surfaces of the other of said sets of ribs and glide along the longer sides thereof which further accelerate the turbulence flow.
- 5. The foamer nozzle according to claim 1, wherein said ribs of said first and second sets extend in mutually angular, non-perpendicular directions to define said openings as non-rectangular.
- 6. A foamer nozzle assembly mounted at a discharge end of a trigger sprayer, comprising, an inner cylinder having a smooth inner wall defining a turbulence chamber coaxial with a discharge orifice located in an end wall at said discharge end through which a conical spray is discharged in a downstream direction into said chamber for generating foam as spray particles impact against said smooth inner wall to mix with air in said chamber to form foam bubbles, foam enhancement means of molded plastic construction located in said cylinder adjacent the downstream end thereof, said means comprising first and second sets of ribs respectively lying in spaced apart parallel planes, said ribs of said first set being equally spaced apart, and said ribs of said second set being equally spaced apart and offset relative to said ribs of said first set of distance equal to one-half the spacing of said ribs of said first set, said ribs having flat surfaces facing upstream and lying perpendicular to a central axis of said cylinder for further generating foam as the foam bubbles impact against said flat surfaces to further mix with the air in said chamber to create foam ejected from said downstream end of said cylinder.
- 7. The foamer nozzle assembly according to claim 6, wherein said ribs in both said sets extend only in a common direction.
- 8. The foamer nozzle assembly according to claim 6, wherein said ribs of said first and second sets are trapezoidal in cross-section.
- 9. The foamer nozzle assembly according to claim 8, wherein said first set is located downstream of said second set, opposing sidewalls of said ribs of said first set converging in a downstream direction, and opposing sidewalls of said ribs of said second set diverging in said downstream direction.
- 10. The foamer nozzle assembly according to claim 6, wherein said means further comprise a third set of said ribs interconnecting with and extending in a direction perpendicular to said first and second sets.
- 11. The foamer nozzle according to claim 10, wherein said ribs of said first, second and third sets are spaced apart to define uniformly sized openings therebetween.
- 12. The foamer nozzle assembly according to claim 10, wherein said ribs of said third set are zigzag-shaped in said perpendicular direction.
- 13. The foamer nozzle assembly according to claim 10, wherein said first set is located downstream of said second set, said ribs of said third set intersecting with said ribs of said second set and extending downstream of said ribs of said first set.
- 14. A foamer nozzle assembly mounted at a discharge end of a trigger sprayer, comprising, an inner cylinder having a smooth inner wall defining a turbulence chamber coaxial with a discharge orifice located in an end wall at said discharge end through which a conical spray is discharged in a downstream direction into said chamber for generating foam as spray particles impact against said smooth inner wall to mix with air in said chamber to form foam bubbles, foam enhancement means of molded plastic construction located in said cylinder adjacent the downstream end thereof, said means comprising first and second sets of ribs lying in a common plane and mutually intersecting to form uniformly sized openings therebetween, said ribs having flat surfaces facing upstream and lying perpendicular to a central axis of said cylinder for further generating foam as the foam bubbles impact against said flat surfaces to further mix with the air in said chamber to create foam ejected from said downstream end of said cylinder.
- 15. The foamer nozzle assembly according to claim 14, wherein said openings are rectangular.
RELATED APPLICATION
This application is a continuation-in-part of Ser. No. 08/352,805, filed Dec. 1, 1994, and now abandoned.
US Referenced Citations (11)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
352805 |
Dec 1994 |
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