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Method for producing a directed aerosol stream
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1984-07-19
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Granted: 1986-07-01
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Expires: 2004-07-19
Abstract
Abstract The present invention relates to a method for producing a directed aerosol stream by a flame free reaction which is conducted while enveloped within an aerosol free gas and/or vapor stream. It is particularly suitable for use in coating systems, as it permits economical coating without so-called wall deposits.
Inventors
- 👤 Reinhart Kuhne
- 👤 Max Kuisl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:57
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/455; C23C16/45519; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/01413; C03B37/0142; C03B37/018; C03B37/01807; C23C16/448; C23C16/45563; C23C16/45576; C03B2207/00; C03B2207/04; C03B2207/06; C03B2207/08; C03B2207/20; C03B2207/26; C03B2207/30; C03B2207/34; C03B2207/46
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
129 words
A method for producing a directed aerosol stream from gaseous and/or vapor phase reactants, comprising; conveying gaseous and/or vapor phase reactants to a reaction site in a reaction chamber; reacting the reactants at the reaction site in a flame free chemical reaction to produce an aerosol composition; allowing the aerosol composition to pass from the reaction site; and immediately surrounding the aerosol composition with a moving, essentially aerosol free, gas and/or vapor stream; wherein the reactants and the aerosol free gas and/or vapor stream and conveyed to the reaction site through essentially concentrically arranged conduits and the aerosol free gas and/or vapor stream is conveyed through the outermost of the concentrically arranged conduits; whereby a directed aerosol stream enveloped in an aerosol free gas and/or vapor stream is formed.
Claim 2
Independent Claim
129 words
A method for producing a directed aerosol stream from gaseous and/or vapor phase reactants, comprising; conveying gaseous and/or vapor phase reactants to a reaction site in a reaction chamber; reacting the reactants at the reaction site in a flame free chemical reaction to produce an aerosol composition; allowing the aerosol composition to pass from the reaction site; and immediately surrounding the aerosol composition with a moving, essentially aerosol free, gas and/or vapor stream; wherein the reactants and the aerosol free gas and/or vapor stream and conveyed to the reaction site through essentially concentrically arranged conduits and the aerosol free gas and/or vapor stream is conveyed through the outermost of the concentrically arranged conduits; whereby a directed aerosol stream enveloped in an aerosol free gas and/or vapor stream is formed.
Claim 3
Dependent Claim
52 words
The method for producing a directed aerosol stream as defined in claim 1, wherein the reactants being conveyed to the reaction site, the moving essentially aerosol free gas and/or vapor stream, and the directed aerosol stream enveloped in the aerosol free gas and/or vapor stream are all maintained in essentially laminar flow.
Claim 4
Dependent Claim
29 words
The method for producing a directed aerosol stream as defined in claim 1, wherein the gas and/or vapor reactants form a reaction mixture by mutual diffusion of the reactants.
Claim 5
Dependent Claim
28 words
The method for producing a directed aerosol stream as defined in claim 1, wherein the essentially aerosol stream gas and/or vapor stream consists essentially of an inert gas.
Claim 6
Dependent Claim
41 words
A method for producing a directed aerosol stream as defined in claim 4, wherein at least one of the conduits has a nozzle at its end closest to the reaction site which prevents the formation of turbulence in the aerosol stream.
Claim 7
Dependent Claim
28 words
A method for producing a directed aerosol stream as defined in claim 1, wherein the reaction chamber is a furnace and the aerosol comprises solid SiO 2 particles.
Claim 8
Dependent Claim
31 words
Method for producing a directed aerosol stream as defined in claim 6, wherein the aerosol produced comprises solid SiO 2 particles produced by the reaction of SiCl 4 with water vapor.
Claim 9
Dependent Claim
43 words
The method for producing a directed aerosol stream as defined in claim 1, wherein a body is disposed within the path of the directed aerosol stream downstream from the reaction chamber, and the particles within the aerosol stream are deposited onto said body.
Claim 10
Dependent Claim
45 words
The method for producing a direced aerosol stream as defined in claim 8, wherein at least one aerodynamic guide element is disposed within the region of said body so as to shape the aerosol stream, whereby the directed aerosol stream is directed onto said body.
Claim 11
Dependent Claim
40 words
The method for producing a directed aerosol stream as defined in claim 9, wherein an electrical field is generated between said body and the guide element, thereby enhancing the deposition of the particles in said aerosol stream onto said body.
Claim 12
Dependent Claim
39 words
The method for producing a directed aerosol stream defined in claim 10, wherein the aerosol stream comprises dielectric particles which become electrically polarized particles in the electrical field, thereby further enhancing the deposition of the particles onto said body.
Claim 13
Dependent Claim
44 words
The method for producing a directed aerosol stream as defined in claim 8, wherein the body employed is at least one circular cylindrical supporting body onto which a coating of particles is deposited, thereby producing a preform for the production of an optical waveguide.
Claim 14
Dependent Claim
28 words
The method for producing a directed aerosol stream as defined in claim 12, wherein the cylindrical supporting body is coated essentially simultaneously along at least one circumferential line.
Claim 15
Dependent Claim
21 words
The method for producing a directed aerosol stream as defined in claim 8, wherein the aerosol stream comprises SiO 2 particles.
Claim 16
Dependent Claim
24 words
The method for producing a directed aerosol stream as defined in claim 14, wherein the aerosol stream comprises SiO 2 particles and doping substances.
Claim 17
Dependent Claim
21 words
The method for producing a directed aerosol stream as defined in claim 15, wherein the doping substances comprise GeCl 4 .
Claim 18
Dependent Claim
29 words
The method for producing a directed aerosol stream as defined in claim 8, wherein the body disposed within the path of the directed aerosol stream is a silicon wafer.
Claim 19
Dependent Claim
62 words
The method for producing a directed aerosol stream as defined in claim 13, wherein the reaction chamber is a furnace, the aerosol stream comprises SiO 2 particles produced by the reaction of SiCl 4 with water vapor, and the essentially concentrically arranged conduits end in nozzles which shape the cross-section of the aerosol stream to the cross-section of the cylindrical supporting body.
Claim 20
Dependent Claim
43 words
The method for producing a directed aerosol stream as defined in claim 18, wherein at least one aerodynamic guide element is disposed within the region of said body to shape the aerosol stream, whereby the directed aerosol stream is directed onto said body.
Claim 21
Dependent Claim
40 words
The method for producing a directed aerosol stream as defined in claim 19, wherein an electrical field is generated between said body and the guide element, thereby enhancing the deposition of the particles in said aerosol stream onto said body.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |