US4374173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite powders sprayable to form abradable seal coatings
Assignee: Westaim Corp
•
Filing: 1980-12-04
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Granted: 1983-02-15
•
Expires: 2000-12-04
Abstract
Abstract A composite powder sprayable by thermal spraying onto a substrate to form an abradable seal coating, is composed of particles each having a core of non-metallic solid material surrounded by a layer of nickel-chromium-aluminum alloy containing from about 4 to about 8% and from about 2 to about 6% aluminum.
Inventors
- 👤 Emilija Adamovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; B; B22; B22F; B22F1/00; B22F1/18; F; F01; F01D; F01D11/00; F01D11/08; F01D11/12; F01D11/122; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/256; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
55 words
A composite powder sprayable by thermal spraying onto a substrate to form an abradable seal coating, said powder comprising particles each having a core of non-metallic solid material surrounded by a layer of nickel-chromium-aluminum alloy containing from about 4 to about 8% by weight chromium and from about 2 to about 6% by weight aluminum.
Claim 2
Dependent Claim
55 words
A composite powder sprayable by thermal spraying onto a substrate to form an abradable seal coating, said powder comprising particles each having a core of non-metallic solid material surrounded by a layer of nickel-chromium-aluminum alloy containing from about 4 to about 8% by weight chromium and from about 2 to about 6% by weight aluminum.
Claim 3
Dependent Claim
31 words
A composite powder according to claim 1 wherein the nickel-chromium-aluminum alloy contains from about 4.5 to about 6% by weight chromium and from about 3 to about 5% by weight aluminum.
Claim 4
Dependent Claim
30 words
A composite powder according to claim 1 wherein the ratio of the nickel-chromium-aluminum alloy to non-metallic material by weight is in the range of from about 78:22 to about 90:10.
Claim 5
Dependent Claim
29 words
A composite powder according to claim 3 wherein the ratio of nickel-chromium-aluminum alloy to non-metallic material by weight is in the range of from about 80:20 to about 82:18.
Claim 6
Dependent Claim
20 words
A composite powder according to claim 1 wherein the nickel-chromium-aluminum alloy also contains up to about 1% by weight silicon.
Claim 7
Dependent Claim
20 words
A composite powder according to claim 1 wherein the nickel-chromium-aluminum alloy also contains up to about 1% by weight iron.
Claim 8
Dependent Claim
17 words
A composite powder according to claim 1 wherein each particle has a core of heat insulating material.
Claim 9
Dependent Claim
16 words
A composite powder according to claim 7 wherein each particle has a core of ceramic material.
Claim 10
Dependent Claim
15 words
A composite powder according to claim 8 wherein each particle has a core of bentonite.
Claim 11
Dependent Claim
15 words
A composite powder according to claim 8 wherein each particle has a core of rhyolite.
Claim 12
Dependent Claim
16 words
A composite powder according to claim 1 wherein each core consists of a single core particle.
Claim 13
Dependent Claim
67 words
An abradable seal assembly comprising an abradable seal coating carried by a substrate, said abradable seal coating having been deposited on the substrate by thermal spraying a composite powder comprising particles each having a central core of non-metallic solid material surrounded by a layer of nickel-chromium-aluminum alloy containing from about 4 to about 8% by weight chromium and from about 2 to about 6% by weight aluminum.
Claim 14
Dependent Claim
67 words
An abradable seal assembly comprising an abradable seal coating carried by a substrate, said abradable seal coating having been deposited on the substrate by thermal spraying a composite powder comprising particles each having a central core of non-metallic solid material surrounded by a layer of nickel-chromium-aluminum alloy containing from about 4 to about 8% by weight chromium and from about 2 to about 6% by weight aluminum.
Claim 15
Dependent Claim
47 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the nickel-chromium-aluminum alloy containing from about 4.5 to about 6% chromium and from about 3 to about 5% by weight aluminum.
Claim 16
Dependent Claim
50 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with a ratio of nickel-chromium-aluminum alloy to non-metallic material by weight of each particle being in the range of from about 78:22 to about 90:10.
Claim 17
Dependent Claim
50 words
An abradable seal assembly according to claim 14 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the ratio of nickel-chromium-aluminum alloy to non-metallic material by weight of each particle being in the range of from about 80:20 to about 82:18.
Claim 18
Dependent Claim
38 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the nickel-chromium-aluminum alloy also containing up to about 1% by weight silicon.
Claim 19
Dependent Claim
38 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the nickel-chromium-aluminum alloy also containing up to about 1% by weight iron.
Claim 20
Dependent Claim
34 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the non-metallic core material being heat insulating material.
Claim 21
Dependent Claim
33 words
An abradable seal assembly according to claim 18 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the non-metallic core material being ceramic material.
Claim 22
Dependent Claim
32 words
An abradable seal assembly according to claim 19 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the non-metallic core material being bentonite.
Claim 23
Dependent Claim
32 words
An abradable seal assembly according to claim 19 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder with the non-metallic core material being rhyolite.
Claim 24
Dependent Claim
34 words
An abradable seal assembly according to claim 12 wherein the abradable seal coating has been deposited on the substrate by thermal spraying a composite powder wherein each core consists of a single core particle.
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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) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |