US3948444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low drift spray method
Assignee: Delavan Manufacturing Co
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Filing: 1975-08-25
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Granted: 1976-04-06
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Expires: 1995-08-25
Abstract
Abstract In low drift spray nozzles and a method of applying low drift sprays, liquid is formed in large droplets by imparting a swirling motion to the liquid in a chamber of the nozzle, passing the swirling liquid through a first orifice into another chamber of the nozzle which is larger in cross section than the orifice, and discharging the swirling liquid from the last mentioned chamber through a second orifice which is at least as large in cross section as the first orifice, whereby the discharged liquid forms a hollow geometric shape having large droplets of the liquid therein.
Inventors
- 👤 Kenneth E. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:59
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A method of producing large droplets of liquid comprising imparting a swirling motion to said liquid, passing said swirling liquid through first orifice means into a chamber larger in cross section than said first orifice means and such that the liquid continues to swirl in the chamber, and producing a swirling discharge having a plurality of substantially large droplets of liquid therein by discharging the swirling liquid from said chamber through a second orifice at least as large in cross section as the first orifice means.
Claim 2
Independent Claim
86 words
A method of producing large droplets of liquid comprising imparting a swirling motion to said liquid, passing said swirling liquid through first orifice means into a chamber larger in cross section than said first orifice means and such that the liquid continues to swirl in the chamber, and producing a swirling discharge having a plurality of substantially large droplets of liquid therein by discharging the swirling liquid from said chamber through a second orifice at least as large in cross section as the first orifice means.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein the area of said second orifice means is at least as large as the area of said first orifice means.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein said first and second orifice means are circular and said discharged liquid assumes the shape of a hollow cone.
Claim 5
Dependent Claim
28 words
The method of claim 3 wherein the ratio of the diameter of said second orifice means to the diameter of said first orifice means is at least 1.33.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein said discharged liquid assumes a hollow geometric shape.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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US3841558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |