US4215819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for explosive application of coatings to articles
Assignee: Individual
•
Filing: 1977-12-20
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Granted: 1980-08-05
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Expires: 1997-12-20
Abstract
Abstract The invention relates to the application of powder coatings to vital components of equipment in various industries. The apparatus comprises a barrel for application of powder to the article and a gas distribution unit which connects fuel gas feeding passages and a purging gas feeding passage to the barrel. Gases are fed to outlet pipes of gas passages from appropriate gas sources under pressure through valves mounted in the pipes. The outlet opening of the purging gas passage may, in some embodiments be located upstream of the zone of admission of fuel gases to the barrel in the path of flow of purging gas. The pressure of the purging gas source exceeds the pressure of each of the fuel gas sources so that, upon feeding fuel gas to the barrel, the valves mounted at the outlet pipes of the fuel gas passages shut-off these pipes. After the valve mounted in the purging gas passage is closed, the valves mounted in the fuel pipes admit fuel gases to the barrel to build-up a detonation wave.
Inventors
- 👤 Alexandr P. Garda
- 👤 Oleg A. Andruschak
- 👤 Alexei P. Epik
- 👤 Sergei A. Kozlov
- 👤 Evgeny F. Grechishkin
- 👤 Georgy A. Voronin
- 👤 Viktor N. Krendelev
- 👤 Grigory V. Samsonov, deceased
- 👤 administrator Nadezhda A. Samsonov
- 👤 administrator Natalya G. Samsonov
- 👤 adminstrator Evgeny G. Samsonova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:02
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0006; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
221 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said fuel gas outlet pipes being arranged opposite one another in said gas distribution unit, a passage in said gas distribution unit connecting an outlet opening of said purging gas outlet pipe to said outlet openings of said fuel gas outlet pipes; and valve means incorporated in said passage and being mounted between the outlet openings of said fuel gas outlet pipes and said mixing chamber, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel, each valve means comprising a plate having overflow apertures in a peripheral portion and a middle portion for closing the outlet opening of a respective fuel gas outlet pipe.
Claim 2
Independent Claim
221 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said fuel gas outlet pipes being arranged opposite one another in said gas distribution unit, a passage in said gas distribution unit connecting an outlet opening of said purging gas outlet pipe to said outlet openings of said fuel gas outlet pipes; and valve means incorporated in said passage and being mounted between the outlet openings of said fuel gas outlet pipes and said mixing chamber, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel, each valve means comprising a plate having overflow apertures in a peripheral portion and a middle portion for closing the outlet opening of a respective fuel gas outlet pipe.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein the pressure of the flow of said purging gas urges said valve means into said closed position.
Claim 4
Independent Claim
203 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gas under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said outlet pipes being located within the gas mixing chamber, said outlet opening of said purging gas outlet pipe projecting further into the mixing chamber then said outlet openings of said fuel gas outlet pipes; and a valve means including a disc loosely mounted on a distal end of said purging gas outlet pipe, a portion for closing said outlet openings of said fuel gas outlet pipes, and overflow apertures made on peripheral portions of said disc, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel.
Claim 5
Independent Claim
203 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gas under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said outlet pipes being located within the gas mixing chamber, said outlet opening of said purging gas outlet pipe projecting further into the mixing chamber then said outlet openings of said fuel gas outlet pipes; and a valve means including a disc loosely mounted on a distal end of said purging gas outlet pipe, a portion for closing said outlet openings of said fuel gas outlet pipes, and overflow apertures made on peripheral portions of said disc, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel.
Claim 6
Dependent Claim
24 words
An apparatus according to claim 3, wherein the pressure of the flow of said purging gas urges said valve means into said closed position.
Claim 7
Independent Claim
245 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said fuel gas outlet pipes being arranged within said gas distribution unit symmetrically at an angle with respect to an outlet opening of said purging gas outlet pipe; a guide member provided within said gas mixing chamber and defining with walls of said mixing chamber a passage for admission of gases to said barrel; and valve means mounted between said outlet openings of said fuel gas outlet pipes and said mixing chamber, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during admission of purging gas to said barrel, each of said valve means comprising a plate mounted in close proximity to said outlet opening of a respective fuel gas outlet pipe, said plate having a portion for closing said outlet opening of said respective fuel gas outlet pipe and overflow apertures in a peripheral portion thereof.
Claim 8
Independent Claim
245 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said fuel gas outlet pipes being arranged within said gas distribution unit symmetrically at an angle with respect to an outlet opening of said purging gas outlet pipe; a guide member provided within said gas mixing chamber and defining with walls of said mixing chamber a passage for admission of gases to said barrel; and valve means mounted between said outlet openings of said fuel gas outlet pipes and said mixing chamber, said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during admission of purging gas to said barrel, each of said valve means comprising a plate mounted in close proximity to said outlet opening of a respective fuel gas outlet pipe, said plate having a portion for closing said outlet opening of said respective fuel gas outlet pipe and overflow apertures in a peripheral portion thereof.
Claim 9
Dependent Claim
24 words
An apparatus according to claim 5, wherein the pressure of the flow of said purging gas urges said valve means into said closed position.
Claim 10
Independent Claim
239 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said outlet pipes being positioned within said gas distribution unit, said outlet opening of said purging gas outlet pipe being arranged between said outlet openings of said fuel gas pipes, a transverse passage connecting said outlet of said purging gas outlet pipe to said outlet openings of said fuel gas outlet pipes; and valve means incorporated in said transverse passage and being mounted between said outlet openings of said fuel gas outlet pipes and in said mixing chamber; said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel, each of said valve means comprising ball valve means closing the outlet openings of said fuel gas outlet pipes in one position of the valve means during the admission of purging gas to the barrel.
Claim 11
Independent Claim
239 words
An apparatus for explosive application of powder coatings to an article comprising: a barrel through which said powder is fed to said article; sources of purging gas and fuel gases under pressure having outlet pipes for feeding said gases to said barrel, the pressure of said purging gas source exceeding the pressure of each of said fuel gas sources; a gas distribution unit having a fuel gas mixing chamber arranged in an entrance opening of said barrel and connecting said outlet pipes to said barrel, outlet openings of said outlet pipes being positioned within said gas distribution unit, said outlet opening of said purging gas outlet pipe being arranged between said outlet openings of said fuel gas pipes, a transverse passage connecting said outlet of said purging gas outlet pipe to said outlet openings of said fuel gas outlet pipes; and valve means incorporated in said transverse passage and being mounted between said outlet openings of said fuel gas outlet pipes and in said mixing chamber; said valve means admitting said fuel gases to said barrel when in the open position and shutting off the flow of said fuel gases when in the closed position during the admission of purging gas to said barrel, each of said valve means comprising ball valve means closing the outlet openings of said fuel gas outlet pipes in one position of the valve means during the admission of purging gas to the barrel.
Claim 12
Dependent Claim
24 words
An apparatus according to claim 7, wherein the pressure of the flow of said purging gas urges said valve means into said closed position.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |