Patent US3689987A successfully refreshed from Google Patents.
US3689987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making metal articles
Assignee: Johnson Matthey PLC
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Filing: 1969-04-07
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Granted: 1972-09-12
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Expires: 1989-04-07
Abstract
Abstract This invention is concerned with the provision of an improved method of making metal articles in which the metal is prepared in a form suitable for spraying and is then sprayed on to a target in such a way that most of the droplets of the spray can be individually identified after the sprayed metal has solidified. In other words the spraying is carried out under such conditions that the majority of the droplets retain their identity.
Inventors
- 👤 Ernest Douglas Teague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:01
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185; C22; C22C; C22C5/00; Y; Y10; Y10S; Y10S29/00; Y10S29/039; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12868
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
52 words
A method of making metal article comprising spraying a metal in droplet form onto a cold target under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification, said target being cooled at least during spraying.
Claim 2
Independent Claim
52 words
A method of making metal article comprising spraying a metal in droplet form onto a cold target under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification, said target being cooled at least during spraying.
Claim 3
Independent Claim
61 words
A method of making a metal article comprising the steps of preparing a sheet of tantalum, cleaning the sheet, washing and drying the sheet and then spraying platinum onto the cold sheet of tantalum under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification.
Claim 4
Independent Claim
61 words
A method of making a metal article comprising the steps of preparing a sheet of tantalum, cleaning the sheet, washing and drying the sheet and then spraying platinum onto the cold sheet of tantalum under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification.
Claim 5
Independent Claim
53 words
A method of making a metal article comprising spraying an alloy containing 50 percent gold, 49 percent platinum and 1 percent rodium onto a cold target under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification.
Claim 6
Independent Claim
53 words
A method of making a metal article comprising spraying an alloy containing 50 percent gold, 49 percent platinum and 1 percent rodium onto a cold target under such conditions that the droplets form a coherent deposit on the target and that a major proportion of the droplets can be individually identified after solidification.
Claim 7
Independent Claim
67 words
A method of making a metal article comprising spraying a metal in droplet form onto a cold stationary target which is cooled during spraying or is of such thermal capacity, or both, so that solidification of the droplets into a coherent deposit on the target is promoted, removing the deposit from the target and subjecting the solidified deposit to mechanical working so as to densify the deposit.
Claim 8
Independent Claim
67 words
A method of making a metal article comprising spraying a metal in droplet form onto a cold stationary target which is cooled during spraying or is of such thermal capacity, or both, so that solidification of the droplets into a coherent deposit on the target is promoted, removing the deposit from the target and subjecting the solidified deposit to mechanical working so as to densify the deposit.
Claim 9
Dependent Claim
17 words
A method according to claim 1 wherEin the target is made of material of high thermal capacity.
Claim 10
Dependent Claim
21 words
A method according to claim 1 wherein the metal to be sprayed is selected from the metals of the Platinum group.
Claim 11
Dependent Claim
16 words
A method according to claim 1 wherein the spraying is carried out by flame spraying technique.
Claim 12
Dependent Claim
16 words
A method according to claim 1 wherein the spraying is carried out by plasma spraying technique.
Claim 13
Dependent Claim
14 words
A method according to claim 1 wherein the metal to be sprayed is platinum.
Claim 14
Dependent Claim
30 words
A method according to claim 1 including the further steps of removing the coherent deposit of metal from the target and cold working the coherent deposit removed from the target.
Claim 15
Dependent Claim
18 words
A method according to claim 10 including the further step of annealing the coherent deposit after cold working.
Claim 16
Dependent Claim
30 words
A method according to claim 6 including the further steps of removing the coherent deposit of metal from the target and cold working the coherent deposit removed from the target.
Claim 17
Dependent Claim
18 words
A method according to claim 12 including the further step of annealing the coherent deposit after cold working.
Claim 18
Dependent Claim
25 words
A method according to claim 2 including the further step of cold rolling the composite platinum-tantalum sheet to approximately 50 percent of its original thickness.
Claim 19
Dependent Claim
20 words
A method according to claim 2 including the further steps of cold rolling and then annealing the composite platinum-tantalum sheet.
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |