US3843052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatically assisted hydraulic spray coating apparatus
Assignee: GREYHOUND FINANCIAL Corp
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Filing: 1972-12-21
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Granted: 1974-10-22
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Expires: 1992-12-21
Abstract
Abstract A pneumatically assisted hydraulic atomizing apparatus for paint or other liquids. The spraying apparatus includes an atomizing head assembly which has a selectively shaped orifice for transforming coating liquid such as paint, into a high speed expanding coherent flat and fan shaped film of such liquid that inherently developes unstable wavelike characteristics leading to the atomization of the emitted liquid at the front edge of the film in combination with means for directing gaseous jets into impinging relation over substantially the full transverse extent of the coherent fan shaped film to decrease the thickness thereof and accelerate the atomization whereby the fluid emission velocity for a predetermined degree of atomization can be substantially reduced.
Inventors
- 👤 P Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/03; B05B7/00; B05B7/02; B05B7/08; B05B7/0807; B05B7/0815
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming coating liquid delivered thereto into a thin high velocity expanding coherent and essentially planar flattened fan shaped liquid film which is atomizable into a spray at its forward edge independent of interaction of high velocity air therewith, means for delivering liquid to said selectively shaped orifice for said film forming emission there-through and means for directing auxiliary gaseous jets into impinging relation against the essentially planar defining surfaces of said high velocity expanding coherent fan shaped liquid film to modify the locus of atomization thereof.
Claim 2
Independent Claim
103 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming coating liquid delivered thereto into a thin high velocity expanding coherent and essentially planar flattened fan shaped liquid film which is atomizable into a spray at its forward edge independent of interaction of high velocity air therewith, means for delivering liquid to said selectively shaped orifice for said film forming emission there-through and means for directing auxiliary gaseous jets into impinging relation against the essentially planar defining surfaces of said high velocity expanding coherent fan shaped liquid film to modify the locus of atomization thereof.
Claim 3
Dependent Claim
37 words
An apparatus for spray coating an article according to claim 1, wherein said liquid delivering means includes means for impacting a submerged jet of such liquid against said selectively shaped orifice at low pressure and high velocity.
Claim 4
Dependent Claim
27 words
An apparatus for spray coating an article according to claim 1 wherein said gaseous jets operatively impinge against the emitted liquid adjacent the point of emission thereof.
Claim 5
Dependent Claim
44 words
An apparatus for spray coating an article according to claim 1 wherein said gaseous jets operatively impinge against the emitted liquid at a location closer to the point of emission thereof than the locus of atomization thereof in the absence of such gas jets.
Claim 6
Dependent Claim
28 words
An apparatus for spray coating an article according to claim 1 including means for electrostatically charging said atomized liquid particles and for maintaining an electrostatic depositing field therefor.
Claim 7
Dependent Claim
38 words
An apparatus for spray coating an article according to claim 1 further comprising valve means for regulating the flow of gas directed against the opposing sides of the film to control the dispersal pattern of the atomized material.
Claim 8
Dependent Claim
114 words
In a method of electrostatically depositing a coating material on an article wherein liquid coating material is hydraulically emitted as a coherent flat fan shaped spray that progressively forms an atomized spray into an electrostatic depositing field in proximity to an electrostatically induced ionized atmosphere, the step of passing air delivered from a remote supply thereof through an electrogasdynamic power generator to maintain said electrostatically induced ionized atmosphere and said depositing field at an average field strength of a magnitude proportional to the rate of flow of said air and diverting a portion of said air into direct impinging engagement with the opposite surfaces of said fan shaped film to accelerate the atomization thereof.
Claim 9
Dependent Claim
114 words
In a method of electrostatically depositing a coating material on an article wherein liquid coating material is hydraulically emitted as a coherent flat fan shaped spray that progressively forms an atomized spray into an electrostatic depositing field in proximity to an electrostatically induced ionized atmosphere, the step of passing air delivered from a remote supply thereof through an electrogasdynamic power generator to maintain said electrostatically induced ionized atmosphere and said depositing field at an average field strength of a magnitude proportional to the rate of flow of said air and diverting a portion of said air into direct impinging engagement with the opposite surfaces of said fan shaped film to accelerate the atomization thereof.
Claim 10
Dependent Claim
38 words
The method as set forth in claim 7 wherein the quantity of air employed in said diverted portions of air is insufficient to effect atomization of said liquid in the absence of said hydraulic forces inducing emission thereof.
Claim 11
Dependent Claim
33 words
The method as set forth in claim 7 wherein the velocity of emission of said coating liquid would be insufficient to effect atomization thereof in the absence of said diverted portion of air.
Claim 12
Independent Claim
101 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming coating liquid delivered thereto into a high velocity thin expanding coherent and essentially planar flattened fan shaped film which is atomizable into a spray at its forward edge independent of interaction of high velocity air therewith, means for delivering liquid to said selectively shaped orifice for said film forming emission therethrough and means for directing auxiliary gaseous jets into impinging relation against the marginal side edges of expanding and essentially planar coherent fan shaped film of liquid to modify the spray pattern thereof.
Claim 13
Independent Claim
101 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming coating liquid delivered thereto into a high velocity thin expanding coherent and essentially planar flattened fan shaped film which is atomizable into a spray at its forward edge independent of interaction of high velocity air therewith, means for delivering liquid to said selectively shaped orifice for said film forming emission therethrough and means for directing auxiliary gaseous jets into impinging relation against the marginal side edges of expanding and essentially planar coherent fan shaped film of liquid to modify the spray pattern thereof.
Claim 14
Independent Claim
122 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming liquid delivered thereto into a thin high velocity expanding coherent flattened fan shaped film which atomizes at its forward edge, means for delivering liquid to said selectively shaped orifice for emission therethrough, means for directing gaseous jets into impinging relation against the opposing planar surfaces of the high velocity expanding coherent fan shaped film of liquid, means for electrostatically charging said atomized liquid particles and for maintaining an electrostatic depositing field therefor, electrogasdynamic power generating means disposed within said apparatus operatively responsive to a flow of seeded air there-through and means for diverting a portion of such seeded air to form said gaseous jets.
Claim 15
Independent Claim
122 words
An apparatus for spray-coating an article comprising a liquid atomizing head including a selectively shaped orifice for transforming liquid delivered thereto into a thin high velocity expanding coherent flattened fan shaped film which atomizes at its forward edge, means for delivering liquid to said selectively shaped orifice for emission therethrough, means for directing gaseous jets into impinging relation against the opposing planar surfaces of the high velocity expanding coherent fan shaped film of liquid, means for electrostatically charging said atomized liquid particles and for maintaining an electrostatic depositing field therefor, electrogasdynamic power generating means disposed within said apparatus operatively responsive to a flow of seeded air there-through and means for diverting a portion of such seeded air to form said gaseous jets.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |