Patent US4606929A successfully refreshed from Google Patents.
US4606929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of ionized-plasma spraying and apparatus for performing same
Assignee: Individual
•
Filing: 1985-08-27
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Granted: 1986-08-19
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Expires: 2005-08-27
Abstract
Abstract The disclosed method of ionized-plasma spraying includes the steps of loading an article to be coated into a vacuum chamber, pumping out active gases from the vacuum chamber to a pre-evacuation level, cutting off the pre-evacuation pump, leaking an inert gas into the vacuum chamber, pumping out active gases from the vacuum chamber to the working pressure, spraying a coating onto the article in an inert gas atmosphere, and after the application of the coating terminating the pumping out of active gases from the vacuum chamber and leaking air thereinto, the subsequent pumping out of air from the vacuum chamber being effected to a pressure of 6 to 66 Pa. The apparatus for perfoming the method comprises a high evacuation unit including a magnetron pump connected with the vacuum chamber through a cutoff valve and associated with means for monitoring the residual atmosphere.
Inventors
- 👤 Vladimir P. Petrakov
- 👤 Gennady P. Minkin
- 👤 Vladimir A. Shagun
- 👤 Pavel S. Balykin
- 👤 David I. Barklon
- 👤 Vladimir A. Domrachev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:14
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/62; H; H01; H01J; H01J37/00; H01J37/32; H01J37/32431
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A method of ionized-plasma spraying, including the steps of loading an article into a vacuum chamber; pumping out active gases from said vacuum chamber to a pre-evacuation level; cutting off the pump having been operated for the pre-evacuation; leaking an inert gas into said vacuum chamber; pumping out active gases from said vacuum chamber to attain the working pressure; spraying a coating onto said article in the inert gas atmosphere, and after the application of the coating onto said article terminating the pumping out of active gases from said vacuum chamber and leaking air thereinto, the subsequent evacuation of air from said vacuum chamber being effected to a pressure of 6 to 66 Pa.
Claim 2
Independent Claim
114 words
A method of ionized-plasma spraying, including the steps of loading an article into a vacuum chamber; pumping out active gases from said vacuum chamber to a pre-evacuation level; cutting off the pump having been operated for the pre-evacuation; leaking an inert gas into said vacuum chamber; pumping out active gases from said vacuum chamber to attain the working pressure; spraying a coating onto said article in the inert gas atmosphere, and after the application of the coating onto said article terminating the pumping out of active gases from said vacuum chamber and leaking air thereinto, the subsequent evacuation of air from said vacuum chamber being effected to a pressure of 6 to 66 Pa.
Claim 3
Independent Claim
96 words
An apparatus for performing a method of ionized-plasma spraying, comprising a vacuum chamber; at least one source of ionized-plasma spraying, accommodated in said vacuum chamber; means for accommodating articles to be coated, received within said vacuum chamber; a pre-evacuation pump connected to said vacuum chamber through a cutoff valve; a high evacuation unit including a magnetron pump connected with said vacuum chamber through another cutoff valve; a leak for letting air into said vacuum chamber; an inert gas leak connected to said magnetron pump, said magnetron pump being associated with means for monitoring the residual atmosphere.
Claim 4
Independent Claim
96 words
An apparatus for performing a method of ionized-plasma spraying, comprising a vacuum chamber; at least one source of ionized-plasma spraying, accommodated in said vacuum chamber; means for accommodating articles to be coated, received within said vacuum chamber; a pre-evacuation pump connected to said vacuum chamber through a cutoff valve; a high evacuation unit including a magnetron pump connected with said vacuum chamber through another cutoff valve; a leak for letting air into said vacuum chamber; an inert gas leak connected to said magnetron pump, said magnetron pump being associated with means for monitoring the residual atmosphere.
Claim 5
Dependent Claim
25 words
An apparatus as set forth in claim 2, comprising a system for high-frequency cleaning of the articles to be coated, accommodated in said vacuum chamber.
Claim 6
Dependent Claim
23 words
An apparatus as set forth in claim 2, comprising a system for heating the articles to be coated, accommodated in said vacuum chamber.
References Cited (Backward Citations)
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US4328257A
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |