US3920187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray head
Assignee: 361818 ALBERTA Ltd #300 8657 - 51 AVENUE EDMONTON ALBERTA CANADA T6E 6A8
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Filing: 1974-05-24
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Granted: 1975-11-18
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Expires: 1994-05-24
Abstract
Abstract A spray head is provided comprising a driver section and a nozzle section. The driver section has a central hub carrying helical vanes mounted in the bore of a generally tubular housing. The liquid to be atomized enters the housing bore, flows over the hub to form an annular sheet, and is caused by the vanes to rotate helically. The nozzle is connected to the housing at its downstream end. It comprises a generally tubular body whose bore communicates with the housing bore. A circumferential row of axially extending ridge-like members extend into the nozzle bore from the bore surface at the nozzle outlet. Individual portions of the annular sheet of liquid each contact a face of one of the ridge-like members and are deflected to form a sheet of liquid egressing from the nozzle outlet. These latter sheets spread and form spray.
Inventors
- 👤 Robin Burke Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:45
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/38; F23D11/383; B; B05; B05B; B05B1/00; B05B1/28; B05B1/34; B05B1/3405; B05B7/00; B05B7/02; B05B7/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A spray head comprising: a nozzle section and a driver section connected together; said nozzle section having a bore formed therethrough of substantially circular cross-section, said nozzle bore having an inlet and an outlet, the outlet end of said nozzle bore being outwardly flared; said driver section having a bore formed therethrough, said driver bore having an inlet and outlet, said driver section outlet communicating with the nozzle section inlet; means associated with the driver section for forming liquid and moving said liquid through the driver bore and into the nozzle bore, into a helically flowing annular sheet; and a plurality of members associated with the nozzle section and disposed in a circumferential row at the outlet of the nozzle bore, said members projecting inwardly from the bore surface, each said member having a deflecting face, parallel to the longitudinal axis of the nozzle bore, for deflecting a portion of the helically flowing annular sheet to form an individual sheet of fluid spray; whereby a finely atomized, conical liquid spray dispersed throughout a small solid angle is obtained.
Claim 2
Dependent Claim
178 words
A spray head comprising: a nozzle section and a driver section connected together; said nozzle section having a bore formed therethrough of substantially circular cross-section, said nozzle bore having an inlet and an outlet, the outlet end of said nozzle bore being outwardly flared; said driver section having a bore formed therethrough, said driver bore having an inlet and outlet, said driver section outlet communicating with the nozzle section inlet; means associated with the driver section for forming liquid and moving said liquid through the driver bore and into the nozzle bore, into a helically flowing annular sheet; and a plurality of members associated with the nozzle section and disposed in a circumferential row at the outlet of the nozzle bore, said members projecting inwardly from the bore surface, each said member having a deflecting face, parallel to the longitudinal axis of the nozzle bore, for deflecting a portion of the helically flowing annular sheet to form an individual sheet of fluid spray; whereby a finely atomized, conical liquid spray dispersed throughout a small solid angle is obtained.
Claim 3
Dependent Claim
112 words
The spray head as set forth in claim 1 wherein: said driver section forms a bore comprising a chamber having ends and a periphery between said ends; said driver section further forms an outlet in one of said ends remote from said periphery for transmitting fluid from the chamber into the nozzle bore; and said driver section further forms a primary inlet, for admitting liquid into the chamber adjacent to said periphery and in a direction more parallel than perpendicular to said periphery, and a secondary inlet, comprising one or more passageways for the admission of additional liquid to said chamber, at least one of said passageways being located adjacent said periphery.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |