Patent US3631835A successfully refreshed from Google Patents.
US3631835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium bimetal and system for flame spraying metals on magnesium substrate
Assignee: United States Department of the Navy
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Filing: 1969-02-26
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Granted: 1972-01-04
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Expires: 1989-02-26
Abstract
Abstract An oxyacetylic process for depositing and bonding a layer of other metal onto a sheet of magnesium without igniting the magnesium by flame spraying using a flame spray gun.
Inventors
- 👤 Hugh C Hamontre
- 👤 Hugh M D Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:11
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/02; C; C23; C23C; C23C4/00; C23C4/12; C23C4/137; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12431; Y10T428/12438; Y10T428/12493; Y10T428/12729; Y10T428/12736; Y10T428/12771; Y10T428/12778
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
an eddy current chamber extending from one side of said vacuum chamber between the opposite ends thereof and being open to said vacuum chamber,
Claim 2
Dependent Claim
73 words
an outer wall of said eddy current chamber being a flat surface having a plurality of relatively small holes therethrough whereby vacuum in said chambers is applied to the sheet of magnesium to be coated via the plurality of holes in said eddy current chamber to hold the sheet of magnesium in place on the outer wall flat surface of said eddy current chamber over said plurality of small holes, while being coated,
Claim 3
Dependent Claim
64 words
a baffle means located in said vacuum chamber for deflecting into said eddy current chamber air entering said vacuum chamber via said controlled air inlet to create an eddy current flow of air in said eddy current chamber for cooling and maintaining the magnesium sheet at a temperature below its ignition point while being coated with another metal by said flame spray metallizing gun.
References Cited (Backward Citations)
US3077674A
Cited
US3135626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |