US3901184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic powder flow diverting device
Assignee: Continental Can Co Inc
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Filing: 1974-07-23
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Granted: 1975-08-26
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Expires: 1994-07-23
Abstract
Abstract This invention is directed to a pneumatic flow switching device particularly adapted for the electrostatic coating of tubular workpieces, particularly can bodies, and includes a generally cylindrical chamber, a conduit for peripherally delivering a fluidized admixture of powder and air into the chamber, means for peripherally exhausting the powder-air admixture from the chamber, means adjacent the conduit for directing air tangentially into the chamber whereby the powder-air admixture is directed toward the exhausting means, and means for pneumatically traversing the powder-air admixture generally axially of the chamber for the delivery to an article intended to be treated thereby.
Inventors
- 👤 Robert D Payne
- 👤 James G Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:58
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1468; B05B5/00; B05B5/025; B05B5/03; B05B5/032; B05B5/16; B05B5/1683
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
79 words
A pneumatic flow switching device comprising a generally cylindrical chamber, means delivering a fluidized admixture of powder and air into said chamber, means for exhausting the powder-air admixture from said chamber, first means contiguous said delivering means for pneumatically directing said powder-air admixture from said delivering means toward said exhausting means, and second means for pneumatically traversing said powderair admixture during its movement between said delivering and exhausting means for directing said powder-air admixture primarily axially from said chamber.
Claim 2
Dependent Claim
79 words
A pneumatic flow switching device comprising a generally cylindrical chamber, means delivering a fluidized admixture of powder and air into said chamber, means for exhausting the powder-air admixture from said chamber, first means contiguous said delivering means for pneumatically directing said powder-air admixture from said delivering means toward said exhausting means, and second means for pneumatically traversing said powderair admixture during its movement between said delivering and exhausting means for directing said powder-air admixture primarily axially from said chamber.
Claim 3
Dependent Claim
30 words
The pneumatic flow switching device as defined in claim 1 wherein said first delivering means introduces air into said chamber in a generally tangential direction relative to said cylindrical chamber.
Claim 4
Dependent Claim
28 words
The pneumatic flow switching device as defined in claim 1 wherein said exhausting means exhausts the powder-air admixture in a generally tangential direction relative to said cylindrical chamber.
Claim 5
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 1 wherein said delivering means and said exhausting means are separated from each other by at least 90*.
Claim 6
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 1 including venturi means into which said axially exhausted powder-air admixture is delivered by said second pneumatic means.
Claim 7
Dependent Claim
34 words
The pneumatic flow switching device as defined in claim 1 including means for supporting an article to be coated by the powder of said powder-air admixture adjacent the axial output thereof from said chamber.
Claim 8
Dependent Claim
30 words
The pneumatic flow switching device as defined in claim 1 including a source for said powder-air admixture, and means for returning said peripherally exhausted powder-air admixture to said powder-air source.
Claim 9
Dependent Claim
51 words
The pneumatic flow switching device as defined in claim 1 including means for supporting an article to be coated by the powder of said powder-air admixture adjacent the axial output thereof from said chamber, and means for charging the powder prior to reaching the article whereby the latter is electrostatically coated.
Claim 10
Dependent Claim
28 words
The pneumatic flow switching device as defined in claim 2 wherein said exhausting means exhausts the powder-air admixture in a generally tangential direction relative to said cylindrical chamber.
Claim 11
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 2 wherein said delivering means and said exhausting means are separated from each other by at least 90*.
Claim 12
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 2 including venturi means into which said axially exhausted powder-air admixture is delivered by said second pneumatic means.
Claim 13
Dependent Claim
51 words
The pneumatic flow switching device as defined in claim 2 including means for supporting an article to be coated by the powder Of said powder-air admixture adjacent the axial output thereof from said chamber, and means for charging the powder prior to reaching the article whereby the latter is electrostatically coated.
Claim 14
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 3 wherein said delivering means and said exhausting means are separated from each other by at least 90*.
Claim 15
Dependent Claim
27 words
The pneumatic flow switching device as defined in claim 3 including venturi means into which said axially exhausted powder-air admixture is delivered by said second pneumatic means.
Claim 16
Dependent Claim
51 words
The pneumatic flow switching device as defined in claim 3 including means for supporting an article to be coated by the powder of said powder-air admixture adjacent the axial output thereof from said chamber, and means for charging the powder prior to reaching the article whereby the latter is electrostatically coated.
Claim 17
Dependent Claim
30 words
The pneumatic flow switching device as defined in claim 112 including a source of said powder-air admixture, and means for returning said peripherally exhausted powder-air admixture to said powder-air source.
Claim 18
Dependent Claim
30 words
The pneumatic flow switching device as defined in claim 12 including a source of said powder-air admixture, and means for returning said peripherally exhausted powder-air admixture to said powder-air source.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |