Patent US4868069A successfully refreshed from Google Patents.
US4868069A
Expired / Lapsed
US
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Abrasion-resistant coating
Assignee: Henkel Loctite Corp
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Filing: 1988-08-11
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Granted: 1989-09-19
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Expires: 2008-08-11
Abstract
Abstract A coated substrate in which the coating includes abrasion-resistant particles protruding from the hardened surface of a metal matrix and is bonded to the substrate.
Inventors
- 👤 David S. Darrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:52
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B23; B23P; B23P9/00; B24D3/001; B24D3/02; B24D3/04; B24D3/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12993; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/24421
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
37 words
A coated substrate in which the coating is bonded to the substrate, said coating comprising abrasion-resistant particles that protrude from a metal matrix having a surface that is hardened relative to the bulk of said metal matrix.
Claim 2
Dependent Claim
37 words
A coated substrate in which the coating is bonded to the substrate, said coating comprising abrasion-resistant particles that protrude from a metal matrix having a surface that is hardened relative to the bulk of said metal matrix.
Claim 3
Dependent Claim
24 words
The coated substrate of claim 1 wherein the hardened surface of said metal matrix comprises a boride, carbide, nitride, or carbonitride of said metal.
Claim 4
Dependent Claim
11 words
The coated substrate of claim 1 wherein said substrate comprises steel.
Claim 5
Dependent Claim
16 words
The coated substrate of claim 1 wherein said metal matrix comprises nickel or an alloy thereof.
Claim 6
Dependent Claim
16 words
The coated substrate of claim 1 wherein said metal matrix comprises cobalt or an alloy thereof.
Claim 7
Dependent Claim
18 words
The coated substrate of claim 1 wherein said abrasion-resistant particles comprise metal boride, carbide, nitride, or carbonitride particles.
Claim 8
Dependent Claim
21 words
The coated substrate of claim 6 wherein said metal comprises tungsten, vanadium, titanium, tantalum, niobium, chromium, molybdenum, or a mixture thereof.
Claim 9
Dependent Claim
19 words
The coated substrate of claim 6 wherein said abrasion-resistant particles comprise tungsten carbide, titanium carbide, or a mixture thereof.
Claim 10
Dependent Claim
19 words
The coated substrate of claim 1 wherein the hardness of said coated substrate is at least 55 Rockwell C.
Claim 11
Dependent Claim
18 words
The coated substrate of claim 9 wherein the hardness of said coated substrate is at least 1200 knoop.
Claim 12
Dependent Claim
20 words
The coated substrate of claim 1 wherein the impact resistance of said coated substrate is at least 1.5 ft. lbs.
Claim 13
Dependent Claim
20 words
The coated substrate of claim 11 wherein the impact resistance of said coated substrate is at least 10 ft. lbs.
Claim 14
Dependent Claim
15 words
The coated substrate of claim 1 wherein said coating is metallurgically bonded to said substrate.
Claim 15
Dependent Claim
69 words
The coated substrate of claim 1 wherein said coating is metallurgically bonded to said substrate, said substrate is steel, said metal matrix is nickel, cobalt, or one of their alloys, and said abrasion-resistant particles are tungsten carbide or titanium carbide particles, alone or in combination with each other, said coated substrate having a hardness of at least 1200 knoop and an impact resistance of at least 10 ft. lbs.
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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) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |