Patent US3138813A successfully refreshed from Google Patents.
Patent US3640472A successfully refreshed from Google Patents.
US3640472A
Expired / Lapsed
US
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Liquid discharge nozzle having improved flow control means
Assignee: Rain Jet Corp
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Filing: 1970-08-28
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Granted: 1972-02-08
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Expires: 1990-08-28
Abstract
Abstract A family of aerating liquid discharge nozzles, each having an elongate body defining a duct therethrough between lower and upper liquid inlet openings defined at opposite ends of the body, is described. A plug is disposed across the duct and has liquid flow passage means defined therethrough by a plurality of grooves formed in the plug sidewalls. The grooves are spaced uniformly around the circumference of the plug and have an aggregate crosssectional area substantially less than the cross-sectional area of the duct at the location of the plug in the duct. A conical projection extends from the plug toward the liquid inlet opening coaxially of the duct, the radius of the projection, at its base, being at least equal to the minimum radius of the plug.
Inventors
- 👤 John O Hruby Jr
- 👤 Rain Jet Corp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:19
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2341; B01F23/23413; B05; B05B; B05B1/00; B05B1/14; B05B1/34; B05B1/3402; B05B17/00; B05B17/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
213 words
A liquid discharge nozzle for discharging liquid generally upwardly therefrom comprising: a. an elongate straight body defining a duct therethrough between a lower liquid inlet opening defined at an open lower end of the body and an upper liquid outlet opening defined across an open upper end of the body; b. a plug having substantial length between opposite ends thereof relative to the diameter of the duct disposed across the duct adjacent the duct outlet opening, the duct inlet opening having an area at least as great as the effective cross-sectional area of the duct at the location of the plug along the duct; c. liquid flow passage means defined through the plug by a plurality of grooves formed in the sidewalls of the plug at locations spaced uniformly around the circumference of the plug, the liquid flow passage means having a total crosssectional area, at least adjacent the outlet end of the body, substantially less than the cross-sectional area of the duct at the location of the plug in the duct; and d. a conical projection extending from the plug toward the liquid inlet opening coaxially of the duct, the radius of the projection at its base being at least equal to the minimum radius of the plug at the projection base.
Claim 2
Dependent Claim
213 words
A liquid discharge nozzle for discharging liquid generally upwardly therefrom comprising: a. an elongate straight body defining a duct therethrough between a lower liquid inlet opening defined at an open lower end of the body and an upper liquid outlet opening defined across an open upper end of the body; b. a plug having substantial length between opposite ends thereof relative to the diameter of the duct disposed across the duct adjacent the duct outlet opening, the duct inlet opening having an area at least as great as the effective cross-sectional area of the duct at the location of the plug along the duct; c. liquid flow passage means defined through the plug by a plurality of grooves formed in the sidewalls of the plug at locations spaced uniformly around the circumference of the plug, the liquid flow passage means having a total crosssectional area, at least adjacent the outlet end of the body, substantially less than the cross-sectional area of the duct at the location of the plug in the duct; and d. a conical projection extending from the plug toward the liquid inlet opening coaxially of the duct, the radius of the projection at its base being at least equal to the minimum radius of the plug at the projection base.
Claim 3
Dependent Claim
33 words
The nozzle of claim 1, wherein each of the grooves extends from the end of the plug adjacent the liquid outlet opening to the end of the plug from which the projection extends.
Claim 4
Dependent Claim
26 words
The nozzle of claim 1, wherein each of the grooves extends from the end of the plug adjacent the liquid outlet opening into the conical projection.
Claim 5
Dependent Claim
35 words
The nozzle of claim 3, wherein the grooves are tapered from a maximum transverse dimension at the end of the plug adjacent the liquid outlet opening to a minimum transverse dimension in the conical projection.
Claim 6
Dependent Claim
42 words
The nozzle of claim 1, further comprising a plurality of liquid flow-path straightening members each having an inner extent defined in the plug and an outer extent adjacent the inner walls of the duct, the members being spacially located about the plug.
Claim 7
Dependent Claim
22 words
The nozzle of claim 5, wherein the outer extent of each straightening member is engaged with the inner walls of the duct.
Claim 8
Dependent Claim
43 words
The nozzle of claim 1, further comprising a plurality of liquid flow-path straightening members each having an inner extent defined in the conical projection and an outer surface adjacent the inner walls of the duct, the members being spacially located about the plug.
Claim 9
Dependent Claim
22 words
The nozzle of claim 7, wherein the outer extent of each straightening member is engaged with the inner walls of the duct.
Claim 10
Dependent Claim
22 words
The nozzle of claim 1, wherein the grooves constitute the only liquid flow passages communicating between the opposite ends of the plug.
Claim 11
Dependent Claim
25 words
The nozzle of claim 1, wherein the nozzle is devoid of structure spanning the duct between the plug and the outlet end of the duct.
Claim 12
Dependent Claim
26 words
The nozzle of claim 1, wherein the end of the plug adjacent the liquid outlet opening is essentially coplAnar with the outlet end of the duct.
Claim 13
Dependent Claim
13 words
The nozzle of claim 1, wherein the conical projection has a rounded apex.
Claim 14
Dependent Claim
28 words
The nozzle of claim 1, wherein the conical projection has a radius, at its base, exactly equal to the minimum radius of the plug adjacent the projection base.
Claim 15
Dependent Claim
15 words
The nozzle of claim 1, wherein the grooves have sidewalls which intersect the plug sidewalls.
Claim 16
Dependent Claim
25 words
The nozzle of claim 1, wherein the grooves are parallel to the axis of the duct at the location of the plug in the duct.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |