US3701482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam generating nozzle
Assignee: Individual
•
Filing: 1971-03-17
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Granted: 1972-10-31
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Expires: 1991-03-17
Abstract
Abstract A foam generating nozzle is to be used for applying treating material entrained into foam to plants. A mix of water, foam agent and treatment material is fed through a valve to the generating nozzle. The generating nozzle jets the liquid into a low pressure chamber where it draws air into it and from there, the low pressure chamber is isolated from the high pressure chamber by a throat section. Effort is made to conserve as much energy as possible so the high pressure section will have a pressure of at least one-fifth the pressure of the source of the liquid. The foam is dispersed from the high pressure section by interchangeable spray-pattern nozzles to obtain the desired pattern for dispersing the foam.
Inventors
- 👤 Norman H Sachnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:55
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0018; B05B7/005; B05B7/0056; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
225 words
A foam generating nozzle comprising an inlet nipple adapted to receive fluid under pressure, a disc disposed in the downstream end of said nipple, said disc having at least one passage extending therethrough, a body joined to said nipple, said body having a low pressure chamber in communication with said disc and receiving fluid passing therethrough and said body having a throat smaller in diameter than said low pressure chamber and connected to and receiving fluid from the low pressure chamber and said body having at least one radially disposed air port therein communicating between said low pressure chamber and the exterior of said body and said body having a diverging frustoconical section communicating at its smaller end with the downstream end of said throat, a spray pattern member joined to the larger end of said frustoconical section, said spray pattern member having at its upstream end a high pressure chamber and at its downstream end one or more bores conveying fluid from said high pressure chamber to the exterior of said nozzle, said high pressure chamber having a volume no greater than ten times the volume of said throat, so that a back pressure is held on foam being released from the nozzle but upon stoppage of flow of fluid to said nipple foam will not back up and discharge into said air port.
Claim 2
Dependent Claim
225 words
A foam generating nozzle comprising an inlet nipple adapted to receive fluid under pressure, a disc disposed in the downstream end of said nipple, said disc having at least one passage extending therethrough, a body joined to said nipple, said body having a low pressure chamber in communication with said disc and receiving fluid passing therethrough and said body having a throat smaller in diameter than said low pressure chamber and connected to and receiving fluid from the low pressure chamber and said body having at least one radially disposed air port therein communicating between said low pressure chamber and the exterior of said body and said body having a diverging frustoconical section communicating at its smaller end with the downstream end of said throat, a spray pattern member joined to the larger end of said frustoconical section, said spray pattern member having at its upstream end a high pressure chamber and at its downstream end one or more bores conveying fluid from said high pressure chamber to the exterior of said nozzle, said high pressure chamber having a volume no greater than ten times the volume of said throat, so that a back pressure is held on foam being released from the nozzle but upon stoppage of flow of fluid to said nipple foam will not back up and discharge into said air port.
Claim 3
Dependent Claim
55 words
The nozzle of claim 1 wherein said spray pattern member has a plurality of bores and wherein a pair of spaced wings are provided on the outlet end of the spray pattern member and wherein the said bores converge toward their outlet ends to mix fluid from the bores in the space between said wings.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |