Patent US3578249A successfully refreshed from Google Patents.
US3578249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat spray aspirating nozzle
Assignee: Gulf Research and Development Co
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Filing: 1969-03-05
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Granted: 1971-05-11
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Expires: 1989-03-05
Abstract
Abstract A flat spray nozzle utilizing two flows, which may be of two different fuels, or of a fuel and air, and one or both of which may be pressurized. The nozzle includes a front end nosepiece which creates a region of low pressure in its exit orifice, and the exit end of the liquid fuel supply is located at that lowpressure region to thereby cause aspiration of the fuel into the gas as it exits from the nozzle in a flat, fan-shaped spray.
Inventors
- 👤 Orvis A Davis Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:21
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
227 words
A flat spray nozzle comprising a nozzle body, a front end nosepiece at the front end of said nozzle body formed with an exit orifice located in a plane transverse to the axis of said nozzle between the front and rear transverse faces of said nosepiece, a nozzle stem formed with a through opening having an inlet end and an outlet end, said through opening extending generally axially through the length of said nozzle stem to deliver a flow of fuel unchanged from said inlet end to said outlet end, means to mount said nozzle stem on said nosepiece with said outlet end of said nozzle stem through opening located substantially in said exit orifice, means to expose said inlet end of said opening to a source of fuel, means to supply a flow of pressurized fluid between said nozzle stem and said nosepiece and out said exit orifice of said nosepiece around said nozzle stem outlet opening; whereby passage of said pressurized fluid out of said exit orifice around said fuel carrying end of said through opening creates a region of reduced pressure in the vicinity of said outlet end of said through opening to thereby draw fuel out of said nozzle stem through opening into said flow of pressurized fluid; and means to constrain the flow of pressurized fluid carrying fuel into a fan-shaped spray.
Claim 2
Dependent Claim
227 words
A flat spray nozzle comprising a nozzle body, a front end nosepiece at the front end of said nozzle body formed with an exit orifice located in a plane transverse to the axis of said nozzle between the front and rear transverse faces of said nosepiece, a nozzle stem formed with a through opening having an inlet end and an outlet end, said through opening extending generally axially through the length of said nozzle stem to deliver a flow of fuel unchanged from said inlet end to said outlet end, means to mount said nozzle stem on said nosepiece with said outlet end of said nozzle stem through opening located substantially in said exit orifice, means to expose said inlet end of said opening to a source of fuel, means to supply a flow of pressurized fluid between said nozzle stem and said nosepiece and out said exit orifice of said nosepiece around said nozzle stem outlet opening; whereby passage of said pressurized fluid out of said exit orifice around said fuel carrying end of said through opening creates a region of reduced pressure in the vicinity of said outlet end of said through opening to thereby draw fuel out of said nozzle stem through opening into said flow of pressurized fluid; and means to constrain the flow of pressurized fluid carrying fuel into a fan-shaped spray.
Claim 3
Dependent Claim
32 words
The combination of claim 1, said exit orifice being of rectangular shape, and the diameter of said outlet opening being substantially equal to the smaller dimension of said rectangular shaped exit orifice.
Claim 4
Dependent Claim
109 words
The combination of claim 1, said pressurized fluid supply means comprising a pair of slots formed in said nosepiece extending from said rear transverse face of said nosepiece to said exit orifice, said constraining means comprising an outlet slot formed in said nosepiece extending from said front transverse face of said nosepiece to said exit orifice, said pair of slots being spaced apart from each other by a distance substantially equal to the thickness of said outlet slot, said outlet slot being located in planes between the planes of said pair of slots, and the intersections of said outlet slot with said pair of slots defining said exit orifice.
Claim 5
Dependent Claim
67 words
The combination of claim 3, said means to mount said nozzle stem on said nosepiece comprising a conical seat formed in said nosepiece extending from said Rear transverse face of said nosepiece to said exit orifice and a mating conical portion of said nozzle stem extending from rear portions of said stem towards said outlet end of said through opening and terminating short of said outlet end.
Claim 6
Dependent Claim
28 words
The combination of claim 4, said pair of slots being of arcuate configuration and extending forwardly of said conical seat, and said outlet slot being of arcuate configuration.
Claim 7
Dependent Claim
33 words
The combination of claim 4, said nozzle stem being formed with an integral reduced cross-sectional area portion extending forwardly of said conical portion to said outlet end of said nozzle stem through opening.
Claim 8
Dependent Claim
23 words
The combination of claim 6, said nozzle stem being formed with annular land surrounding said outlet end of said nozzle stem through opening.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |