US3887135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-atomizing nozzle by spirally rotating gas stream
Assignee: TAMAI HAJIME HEIR OF DEC'D TAMAI SHIGETAKE
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Filing: 1973-11-15
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Granted: 1975-06-03
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Expires: 1993-11-15
Abstract
Abstract A gas-atomizing nozzle composed of a truncated cone-shaped main body having semi-spiral grooves formed symmetrically on the tapered surface of the truncated cone body and a conical cover or sleeve covering the grooved surface for providing semi-spiral passageways of gas, said truncated cone body having at the center a passageway for a liquid to be atomized and said semi-spiral grooves having such configuration that the liquid discharged through the liquid passageway is finely atomized at the focus of the spirally rotating gas streams jetted through the semi-spiral passageways by the centrifugal force formed by the spiral motion of the gas streams in a confined conical space.
Inventors
- 👤 Shigetake Tamai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:19
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/10; B05B7/06; B05B7/062; B05B7/066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
An air-atomizing nozzle comprising: a truncated main body forming a tapered surface of revolution, semi-spiral grooves being identical in form and configuration and symmetrically disposed at circumferentially spaced positions within the tapered surface of the body, a correspondingly tapered cover closely covering said grooved surface of the truncated body and forming semi-spiral air passageways, said truncated body having at its axis a pasSageway for liquid and said semi-spiral grooves being of such configuration that the focal point of said semi-spiral grooves on the tapered surface of the truncated body coincides with the imaginative apex or focal point of the main body, and wherein said semi-spiral grooves comprise grooves formed by transcribing on the tapered surface of the truncated body of the nozzle a pattern comprising a pair of stream lines on the sink side of a hydrodynamic dipole by plane projection and forming said semi-spiral grooves in conformance with the transcribed pattern at each circumferentially spaced groove location such that the focal point of the semi-spiral grooves coincides with the dipole sink point and with the axis of the truncated body.
Claim 2
Dependent Claim
181 words
An air-atomizing nozzle comprising: a truncated main body forming a tapered surface of revolution, semi-spiral grooves being identical in form and configuration and symmetrically disposed at circumferentially spaced positions within the tapered surface of the body, a correspondingly tapered cover closely covering said grooved surface of the truncated body and forming semi-spiral air passageways, said truncated body having at its axis a pasSageway for liquid and said semi-spiral grooves being of such configuration that the focal point of said semi-spiral grooves on the tapered surface of the truncated body coincides with the imaginative apex or focal point of the main body, and wherein said semi-spiral grooves comprise grooves formed by transcribing on the tapered surface of the truncated body of the nozzle a pattern comprising a pair of stream lines on the sink side of a hydrodynamic dipole by plane projection and forming said semi-spiral grooves in conformance with the transcribed pattern at each circumferentially spaced groove location such that the focal point of the semi-spiral grooves coincides with the dipole sink point and with the axis of the truncated body.
Claim 3
Dependent Claim
181 words
An air-atomizing nozzle comprising: a truncated main body forming a tapered surface of revolution, semi-spiral grooves being identical in form and configuration and symmetrically disposed at circumferentially spaced positions within the tapered surface of the body, a correspondingly tapered cover closely covering said grooved surface of the truncated body and forming semi-spiral air passageways, said truncated body having at its axis a pasSageway for liquid and said semi-spiral grooves being of such configuration that the focal point of said semi-spiral grooves on the tapered surface of the truncated body coincides with the imaginative apex or focal point of the main body, and wherein said semi-spiral grooves comprise grooves formed by transcribing on the tapered surface of the truncated body of the nozzle a pattern comprising a pair of stream lines on the sink side of a hydrodynamic dipole by plane projection and forming said semi-spiral grooves in conformance with the transcribed pattern at each circumferentially spaced groove location such that the focal point of the semi-spiral grooves coincides with the dipole sink point and with the axis of the truncated body.
Claim 4
Dependent Claim
181 words
An air-atomizing nozzle comprising: a truncated main body forming a tapered surface of revolution, semi-spiral grooves being identical in form and configuration and symmetrically disposed at circumferentially spaced positions within the tapered surface of the body, a correspondingly tapered cover closely covering said grooved surface of the truncated body and forming semi-spiral air passageways, said truncated body having at its axis a pasSageway for liquid and said semi-spiral grooves being of such configuration that the focal point of said semi-spiral grooves on the tapered surface of the truncated body coincides with the imaginative apex or focal point of the main body, and wherein said semi-spiral grooves comprise grooves formed by transcribing on the tapered surface of the truncated body of the nozzle a pattern comprising a pair of stream lines on the sink side of a hydrodynamic dipole by plane projection and forming said semi-spiral grooves in conformance with the transcribed pattern at each circumferentially spaced groove location such that the focal point of the semi-spiral grooves coincides with the dipole sink point and with the axis of the truncated body.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |