US4592964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant coating
Assignee: Goetze GmbH
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Filing: 1985-06-03
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Granted: 1986-06-03
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Expires: 2005-06-03
Abstract
Abstract A sprayed-on wear-resistant coating which is carried on a substrate constituted by a machine part surface, has an inner face oriented towards the substrate and an outer face oriented away from the substrate. The coating consists of a material whose structure and/or composition continuously varies from the inner face of the coating towards the outer face thereof.
Inventors
- 👤 Ulrich Buran
- 👤 Manfred Fischer
- 👤 Hans-Jochem Neuhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:29
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/26; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12611
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
55 words
In a sprayed-on wear-resistant coating carried on a substrate constituted by a machine part surface, the coating having an inner face oriented towards the substrate and an outer face oriented away from the substrate; the improvement wherein the coating consists of a material whose structure continuously varies from said inner face towards said outer face.
Claim 2
Dependent Claim
55 words
In a sprayed-on wear-resistant coating carried on a substrate constituted by a machine part surface, the coating having an inner face oriented towards the substrate and an outer face oriented away from the substrate; the improvement wherein the coating consists of a material whose structure continuously varies from said inner face towards said outer face.
Claim 3
Dependent Claim
25 words
A sprayed-on wear-resistant coating as defined in claim 1, wherein the porosity of the material continuously varies from said inner face towards said outer face.
Claim 4
Dependent Claim
25 words
A sprayed-on wear-resistant coating as defined in claim 2, wherein the porosity of the material continuously increases from said inner face towards said outer face.
Claim 5
Dependent Claim
55 words
In a sprayed-on wear-resistant coating carried on a substrate constituted by a machine part surface, the coating having an inner face oriented towards the substrate and an outer face oriented away from the substrate; the improvement wherein the coating consists of a material whose composition continuously varies from said inner face towards said outer face.
Claim 6
Dependent Claim
55 words
In a sprayed-on wear-resistant coating carried on a substrate constituted by a machine part surface, the coating having an inner face oriented towards the substrate and an outer face oriented away from the substrate; the improvement wherein the coating consists of a material whose composition continuously varies from said inner face towards said outer face.
Claim 7
Dependent Claim
22 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material consists of a mixture of at least two different components.
Claim 8
Dependent Claim
73 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises a first component consisting of an adhesion-enhancing and shatter risk-reducing alloy and a second component consisting of a highly wear-resistant alloy; said first component being dominant in said material in a thickness zone of the coating including said inner face and said second component being dominant in said material in a thickness zone of the coating including said outer face.
Claim 9
Dependent Claim
25 words
A sprayed-on wear-resistant coating as defined in claim 4, further comprising an adhesion-enhancing layer situated between said substrate and said inner face of said coating.
Claim 10
Dependent Claim
34 words
A sprayed-on wear-resistant coating as defined in claim 7, wherein said adhesion-enhancing layer comprises a material selected from a group consisting of molybdenum, a nickel-chromium alloy, a nickel aluminum alloy and a nickel-chromium-aluminum alloy.
Claim 11
Dependent Claim
59 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, Mo 2 C and a binder metal; from said inner face to said outer face the molybdenum changing from 25 to 65% by weight, the Mo 2 C changing from 50 to 10% by weight and the binder metal being unchanged at 25% by weight.
Claim 12
Dependent Claim
61 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, Cr 3 C 2 and a binder metal; from said inner face to said outer face the molybdenum changing from 25 to 65% by weight, the Cr 3 C 2 changing from 50 to 10% by weight and the binder metal being unchanged at 25% by weight.
Claim 13
Dependent Claim
74 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, Mo 2 C, Cr 3 C 2 and a binder metal; from said inner face to said outer face the molybdenum changing from 25 to 65% by weight, the Mo 2 C and Cr 3 C 2 changing from a total of 50 to a total of 10% by weight and the binder metal being unchanged at 25% by weight.
Claim 14
Dependent Claim
56 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, ferrochromium and a binder metal; from said inner face to said outer face the molybdenum changing from 20 to 60% by weight, the ferrochromium changing from 60 to 15% by weight and the binder metal changing from 20 to 25% by weight.
Claim 15
Dependent Claim
56 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, chromium and a binder metal; from said inner face to said outer face the molybdenum changing from 20 to 60% by weight, the chromium changing from 60 to 15% by weight and the binder metal changing from 20 to 25% by weight.
Claim 16
Dependent Claim
65 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises molybdenum, ferrochromium, chromium and a binder metal; from said inner face to said outer face the molybdenum changing from 20 to 60% by weight, the ferrochromium and chromium changing from a total of 60 to a total of 15% by weight and the binder metal changing from 20 to 25% by weight.
Claim 17
Dependent Claim
93 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises Al 2 O 3 , TiO 2 , La 2 O 3 , calcium carbonate and a binder metal; from said inner face to said outer face the Al 2 O 3 changing from 55 to 40% by weight, the TiO 2 changing from 35 to 25% by weight, the La 2 O 3 remaining unchanged at 10% by weight, the calcium carbonate remaining unchanged at 20% by weight and the binder metal changing from 0 to 25% by weight.
Claim 18
Dependent Claim
88 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises Al 2 O 3 , TiO 2 , niobium oxide, calcium carbonate and a binder metal; from said inner face to said outer face the Al 2 O 3 changing from 55 to 40% by weight, the TiO 2 changing from 35 to 25% by weight, the niobium oxide remaining unchanged at 10% by weight, the calcium carbonate remaining unchanged at 20% by weight and the binder metal changing from 0 to 25% by weight.
Claim 19
Dependent Claim
101 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises Al 2 O 3 , TiO 2 , La 2 O 3 , niobium oxide, calcium carbonate and a binder metal; from said inner face to said outer face the Al 2 O 3 changing from 55 to 40% by weight, the TiO 2 changing from 35 to 25% by weight, the La 2 O 3 and niobium oxide remaining unchanged at a total of 10% by weight, the calcium carbonate remaining unchanged at 20% by weight and the binder metal changing from 0 to 25% by weight.
Claim 20
Dependent Claim
32 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises intermetallic compounds up to 25% by weight on the basis selected from the group consisting of cobalt and nickel.
Claim 21
Dependent Claim
21 words
A sprayed-on wear-resistant coating as defined in claim 4, wherein said material comprises a solid lubricant up to 25% by weight.
Claim 22
Dependent Claim
32 words
A sprayed-on wear-resistant coating as defined in claim 19, wherein said solid lubricant is selected from the group consisting of molybdenum sulfide, tungsten disulfide, boron nitride, calcium fluoride, nickel graphite and PTFE-powder.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |