Patent US3848807A successfully refreshed from Google Patents.
US3848807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Confining nozzle for spray gun
Assignee: Individual
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Filing: 1973-12-10
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Granted: 1974-11-19
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Expires: 1993-12-10
Abstract
Abstract A nozzle for a spray gun for paint and the like utilizes a novel secondary air stream which combines with the pressurized fluid outlet nozzle action and a primary atomizing air outlet to not only produce a vortex action of the spray but to confine it to a definitely limited area thus preventing excessive splashing, waste of fluid and covering of areas which it is not desired to cover.
Inventors
- 👤 P Partida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:21
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0075
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
168 words
A nozzle for a fluid spray gun comprising: a housing of generally hollow cylindrical configuration having an open end; an orifice positioned concentrically within said housing and disposed for emission of a stream of fluid out of the open end of said housing; means for connecting said orifice to a source of fluid under pressure; a conical air supply member positioned concentrically within said housing; means for connecting said air supply member to the outlet of an air spray gun; said member comprising two separate concentric conical air conduits disposed for emitting a first inner air stream and a second outer air stream axially through said open end of housing, said streams being concentric with each other and having a generally circular cross-sectional configuration; said first inner air stream being disposed to impinge upon said fluid stream thereby effecting atomization of said fluid stream; said second outer stream being disposed to produce an air screen around said first stream thereby confining said first stream to a predetermined area.
Claim 2
Dependent Claim
168 words
A nozzle for a fluid spray gun comprising: a housing of generally hollow cylindrical configuration having an open end; an orifice positioned concentrically within said housing and disposed for emission of a stream of fluid out of the open end of said housing; means for connecting said orifice to a source of fluid under pressure; a conical air supply member positioned concentrically within said housing; means for connecting said air supply member to the outlet of an air spray gun; said member comprising two separate concentric conical air conduits disposed for emitting a first inner air stream and a second outer air stream axially through said open end of housing, said streams being concentric with each other and having a generally circular cross-sectional configuration; said first inner air stream being disposed to impinge upon said fluid stream thereby effecting atomization of said fluid stream; said second outer stream being disposed to produce an air screen around said first stream thereby confining said first stream to a predetermined area.
Claim 3
Dependent Claim
66 words
The nozzle of claim including a semi-cylindrical baffle positioned concentrically within said housing and having its open end facing in the direction of the open end of said housing; said baffle being further positioned behind said orifice and within the flow of said first air stream, whereby the combined action of said baffle and said air streaM produces a vortex action upon said atomized fluid stream.
Claim 4
Dependent Claim
19 words
The nozzle of claim 2 including means for varying the pressure of the air supply to said conical member.
Claim 5
Dependent Claim
16 words
The nozzle of claim 2 including means for varying the flow of fluid to said orifice.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |