US5207382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autogenous flame spraying apparatus for the flame spraying of powder-form materials or spray powder
Assignee: Eutectic Corp
•
Filing: 1990-06-05
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Granted: 1993-05-04
•
Expires: 2010-06-05
Abstract
Abstract An autogenous flame spraying apparatus includes a supply line housing having gas supply lines for combustion gas, carrier gas and acceleration gas; a main housing connected to the supply line housing and having a supply line for a spray powder, and ducts communicating with the gas supply lines, the housing having a first injector for mixing the spray powder and the carrier gas to form a first mixture; an interchangeable nozzle carrier for carrying a releasable torch nozzle, the carrier being releasably attached to the main housing and having a second injector for mixing the combustion gas and the carrier gas to form a second mixture, the nozzle carrier also having ducts for conveying the first mixture and the second mixture to the torch nozzle, whereby the carrier can be replaced so as to alter both flame power and feed of spray powder.
Inventors
- 👤 Wolfgang Simm
- 👤 Hans-Theo Steine
- 👤 Peter Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:50
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/20; B05B7/201; B05B7/205; B05B7/206
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
192 words
An autogenous flame spraying apparatus, comprising: a supply line housing having a combustion gas supply line, a carrier gas supply line and an acceleration gas supply line; a main housing connected to said supply line housing and having a spray powder supply line and ducts communicating with said combustion gas supply line, said carrier gas supply line and said acceleration gas supply line, said housing having a first injector, communication with said spray powder supply line and said carrier gas supply line, for mixing said spray powder and a portion of said carrier gas to form a first mixture; an interchangeable nozzle carrier for carrying a releasable torch nozzle, said nozzle carrier being releasably attached to said main housing and having a second injector, communicating with said combustion gas supply line and said carrier gas supply line, for mixing said combustion gas and a remainder of said carrier gas to form a second mixture, said nozzle carrier also having ducts for conveying said first mixture and said second mixture to said torch nozzle, whereby said nozzle carrier can be replaced so as to alter both flame power and feed of spray powder.
Claim 2
Dependent Claim
192 words
An autogenous flame spraying apparatus, comprising: a supply line housing having a combustion gas supply line, a carrier gas supply line and an acceleration gas supply line; a main housing connected to said supply line housing and having a spray powder supply line and ducts communicating with said combustion gas supply line, said carrier gas supply line and said acceleration gas supply line, said housing having a first injector, communication with said spray powder supply line and said carrier gas supply line, for mixing said spray powder and a portion of said carrier gas to form a first mixture; an interchangeable nozzle carrier for carrying a releasable torch nozzle, said nozzle carrier being releasably attached to said main housing and having a second injector, communicating with said combustion gas supply line and said carrier gas supply line, for mixing said combustion gas and a remainder of said carrier gas to form a second mixture, said nozzle carrier also having ducts for conveying said first mixture and said second mixture to said torch nozzle, whereby said nozzle carrier can be replaced so as to alter both flame power and feed of spray powder.
Claim 3
Dependent Claim
61 words
An apparatus according to claim 1, wherein said supply line housing and said main housing are connected at an attachment plane, O-rings being sealingly disposed at said attachment plane at a transition between said combustion gas supply line, said carrier gas supply line and said acceleration gas supply line of said supply line housing and said ducts of said main housing.
Claim 4
Dependent Claim
44 words
An apparatus according to claim 2, wherein said nozzle carrier is attached to said main housing at an end face of said main housing, a plug element engaging between said nozzle carrier and said main housing to provide non-rotatable mounting of said nozzle carrier.
Claim 5
Dependent Claim
33 words
An apparatus according to claim 3, wherein said end face of said main housing and said attachment plane between said main housing and said supply line housing are disposed in mutually opposite relationship.
Claim 6
Dependent Claim
44 words
An apparatus accordign to claim 1, further comprising a clamping means for connecting said main housing and said supply line housing, whereby sealing elements of said main housing and said supply line housing are clamped between said main housing and said supply line housing.
Claim 7
Dependent Claim
23 words
An apparatus accordign to claim 1, further comprising a regulating valve disposed in said supply line housing in said combustion gas supply line.
Claim 8
Dependent Claim
28 words
An apparatus according to claim 1, further comprising regulating valves disposed in said supply line housing in said combustion gas supply line and said acceleration gas supply line.
Claim 9
Dependent Claim
35 words
An apparatus accordign to claim 1, further comprising regulating valves disposed in said supply line housing in each of said combustion gas supply line, said carrier gas supply line and said acceleration gas supply line.
Claim 10
Dependent Claim
17 words
An apparatus according to claim 1, wherein said regulating valves are disposed outside of said main housing.
Claim 11
Dependent Claim
44 words
An apparatus accordign to claim 2, further comprising a feed attachment for said spray powder, disposed in opposite relationship to said attachment plane and being disposed upstream of and communicating with said first injector whereby said spray powder is drawn into said first injector.
Claim 12
Dependent Claim
28 words
An apparatus accordign to claim 10, further comprising a shut-off means for said spray powder, disposed at a connection plane between said feed attachment and said main housing.
Claim 13
Dependent Claim
25 words
An apparatus according to claim 11, further comprising an aperture means, disposed at said feed attachment, so as to regulate feed of said spray powder.
Claim 14
Dependent Claim
34 words
An apparatus according to claim 12 further comprising a powder feed tube extending transversely to said spray powder supply line of said main housing and communicating with a mixing chamber of said first injector.
Claim 15
Dependent Claim
51 words
An apparatus according to claim 13, further comprising an inset mounted in and closing a longitudinal bore of said main housing, said longitudinal bore communicating with said nozzle carrier, said first injector being disposed on said insert, said insert conveying said carrier gas from said main housing to said first injector.
Claim 16
Dependent Claim
31 words
An apparatus according to claim 14, wherein said first injector is adapted to be interchangeable for a feed tube for spray powder and said carrier gas from an external powder conveyor.
Claim 17
Dependent Claim
32 words
An apparatus accordign to claim 1, further comprising a powder feed line for feeding spray powder to said main housing, said powder feed line adjoining said main housing in an axial direction.
Claim 18
Dependent Claim
35 words
An apparatus accordign to claim 2, wherein said ducts of said main housing open through radial bores at said attachment plane, and said ducts of said main housing extend substantially parallel in said main housing.
Claim 19
Dependent Claim
21 words
An apparatus according to claim 17, wherein said powder feed line is connected to said main housing through a plug connection.
Claim 20
Dependent Claim
25 words
An apparatus according to claim 18, wherein said spray powder supply line projects out of said main housing and is connected to said torch nozzle.
Claim 21
Dependent Claim
32 words
An apparatus accordign to claim 19, wherein said torch nozzle is a multi-part torch nozzle having an inside nozzle part, said spray powder supply line being connected to said inside nozzle part.
Claim 22
Dependent Claim
40 words
An apparatus accordign to claim 20, wherein said multi-part torch nozzle further includes an outside nozzle part, said inside nozzle part and said outside nozzle part defining a mixing chamber therebetween, said mixing chamber having nozzle discharge ducts extending therefrom.
Claim 23
Dependent Claim
21 words
An apparatus accordign to claim 1, wherein said second injector is disposed in said nozzle carrier upstream of said torch nozzle.
Claim 24
Dependent Claim
35 words
An apparatus according to claim 1, wherein said nozzle carrier comprises a connecting sleeve and a nozzle holding means connected together at an abutment plane therebetween, said second injector being disposed at said abutment plane.
Claim 25
Dependent Claim
24 words
An apparatus accordign to claim 1, further comprising a sealing disk having a through opening, said disk being disposed upstream of sad second injector.
Claim 26
Dependent Claim
47 words
An apparatus accordign to claim 1, wherein a t least one annular chamber for combustion gas extends parallel to said second injector and communicates with a combustion gas duct of said ducts of said main housing so as to convey said combustion gas to said second injector.
Claim 27
Dependent Claim
25 words
An apparatus according to claim 25, wherein said at least one annular chamber is connected to a mixing chamber of said second injector through bores.
Claim 28
Dependent Claim
30 words
An apparatus accordign to claim 1, further comprising a fixing cap tube of releasably and gas-tightly bracing one of said nozzle carrier and said torch nozzle to said main housing.
Claim 29
Dependent Claim
79 words
An apparatus accordign to claim 27, wherein said fixing cap tube braces said torch nozzle through a nozzle ring disposed therebetween, an annular space being defined between said nozzle ring and said torch nozzle, and an additional annular space being defined between said fixing cap tube and said nozzle carrier, said annular space being connected to said additional annular space, said additional annular space also being connected to an accelerating gas duct of said ducts of said main housing.
Claim 30
Dependent Claim
34 words
An apparatus accordign to claim 28, further comprising an acceleration tube fitted on said fixing cap tube and having a combustion chamber which decreases in size in a flow direction of said torch nozzle.
Claim 31
Dependent Claim
23 words
An apparatus according to claim 29, wherein said acceleration tube further includes a cooling duct connected to an inlet for a cooling medium.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |