Patent US3618857A successfully refreshed from Google Patents.
US3618857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray nozzle
Assignee: Aviat Design & Engineering Co
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Filing: 1969-04-30
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Granted: 1971-11-09
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Expires: 1989-04-30
Abstract
Abstract A spray nozzle the body of which is provided with a circumferential spray orifice. The orifice is defined by faces on two pieces which are adjustable relatively to one another so that the width of the orifice can be varied. The body is formed by rotating an aerofoil section about a chord of the section and the orifice is positioned so that spray fluid is directed in a dishformation towards the end of the body which, in aerial spraying, is the leading end. If the nozzle is used in a stationary condition, then an airstream is caused to flow over the body from said leading end. A one-way valve is provided which is adapted to be opened by the pressure of the spray liquid fed to the nozzle.
Inventors
- 👤 Johannes Hendrik Rautenbach
- 👤 Maitland Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:34
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A nozzle comprising an elongated body of a streamlined form having a front end and a rear end, an inlet for feeding spray liquid to the interior of the nozzle, and a circumferential spray orifice positioned intermediate said ends and defined between two facing surfaces of the body, each of said surfaces being generally frustoconical in form with the outer periphery of each surface closer to said front end than its inner periphery, and said inlet being forward of said orifice.
Claim 2
Dependent Claim
81 words
A nozzle comprising an elongated body of a streamlined form having a front end and a rear end, an inlet for feeding spray liquid to the interior of the nozzle, and a circumferential spray orifice positioned intermediate said ends and defined between two facing surfaces of the body, each of said surfaces being generally frustoconical in form with the outer periphery of each surface closer to said front end than its inner periphery, and said inlet being forward of said orifice.
Claim 3
Dependent Claim
16 words
A nozzle as claimed in claim 1, wherein said surfaces diverge slightly towards said front end.
Claim 4
Dependent Claim
26 words
A nozzle according to claim 2, wherein the angle between each of said faces and the axis along which the body is elongated is approximately 60*.
Claim 5
Independent Claim
118 words
A method of spraying which comprises feeding spray liquid to the interior of a nozzle having an elongated body of streamlined form, the body having a front end and rear end, feeding the spray liquid from the interior of the nozzle to the exterior thereof through a circumferential spray orifice defineD between two frustoconical surfaces of the body, the frustoconical surfaces being positioned so that the emerging spray liquid is in the form of a generally conical curtain which diverges towards said front end, the included angle between said curtain and the line along which the body is elongated being approximately 60*, and shattering the curtain of spray liquid by means of an airstream flowing over the nozzle.
Claim 6
Independent Claim
118 words
A method of spraying which comprises feeding spray liquid to the interior of a nozzle having an elongated body of streamlined form, the body having a front end and rear end, feeding the spray liquid from the interior of the nozzle to the exterior thereof through a circumferential spray orifice defineD between two frustoconical surfaces of the body, the frustoconical surfaces being positioned so that the emerging spray liquid is in the form of a generally conical curtain which diverges towards said front end, the included angle between said curtain and the line along which the body is elongated being approximately 60*, and shattering the curtain of spray liquid by means of an airstream flowing over the nozzle.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |