Patent US4420543A successfully refreshed from Google Patents.
US4420543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing member of an internal combustion engine, having a flame sprayed surface
Assignee: Toyota Motor Corp
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Filing: 1980-11-03
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Granted: 1983-12-13
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Expires: 2000-11-03
Abstract
Abstract In a bearing member of an internal combustion engine, having a flame sprayed surface, molybdenum or tungsten carbide is known as the material of the flame spray. The present invention aims to provide, for example a flame-sprayed piston ring with good heat-and-wear-resistance as well as a property of not seriously wearing the engine cylinder or cylinder liner. The flame sprayed layer of the present invention is composed of mainly ferrochrome powder and plus a powder of a self fluxing alloy, and additionally molybdenum. The piston ring of the present invention is suitable for heavy duty internal combustion engines, in which wear of the piston ring and cylinder are severe.
Inventors
- 👤 Katsumi Kondo
- 👤 Yoshio Fuwa
- 👤 Akira Harayama
- 👤 Toru Nakahora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:32
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/08; F; F16; F16J; F16J9/00; F16J9/26; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12146
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
46 words
A bearing face coated with a flame sprayed material for use in an internal combustion engine, characterized in that the flame sprayed layer applied on the bearing face is composed of from 55 to 90% of ferrochrome and from 10 to 45% of a self-fluxing alloy.
Claim 2
Dependent Claim
46 words
A bearing face coated with a flame sprayed material for use in an internal combustion engine, characterized in that the flame sprayed layer applied on the bearing face is composed of from 55 to 90% of ferrochrome and from 10 to 45% of a self-fluxing alloy.
Claim 3
Dependent Claim
28 words
A bearing face according to claim 1, wherein said self-fluxing alloy contains at least one metallic component selected from the group consisting of nickel, chromium, cobalt and molybdenum.
Claim 4
Dependent Claim
16 words
A bearing face according to claim 2, wherein said metallic component is both nickel and chromium.
Claim 5
Dependent Claim
13 words
A bearing face according to claim 2, wherein said metallic component is nickel.
Claim 6
Dependent Claim
34 words
A bearing face according to claim 1, wherein the proportions of said ferrochrome and said self fluxing alloy in said flame sprayed layer are from 60 to 85% and from 15 to 40%, respectively.
Claim 7
Dependent Claim
51 words
A bearing face coated with a flame sprayed material for use in an internal combustion engine, characterized in that the flame sprayed layer applied on the bearing face is composed of from 55 to 85% of ferrochrome, from 10 to 30% of self-fluxing alloy, and from 5 to 15% of molybdenum.
Claim 8
Dependent Claim
51 words
A bearing face coated with a flame sprayed material for use in an internal combustion engine, characterized in that the flame sprayed layer applied on the bearing face is composed of from 55 to 85% of ferrochrome, from 10 to 30% of self-fluxing alloy, and from 5 to 15% of molybdenum.
Claim 9
Dependent Claim
28 words
A bearing face according to claim 6, wherein said self-fluxing alloy contains at least one metallic component selected from the group consisting of nickel, chromium, cobalt and molybdenum.
Claim 10
Dependent Claim
16 words
A bearing face according to claim 6, wherein said metallic component is both nickel and chromium.
Claim 11
Dependent Claim
19 words
A bearing face according to claim 1, wherein the ferrochrome particles are dispersed uniformly within the self-fluxing alloy particles.
Claim 12
Dependent Claim
22 words
A bearing face according to claim 6, wherein the molybdenum particles and ferrochrome particles are dispersed uniformly within the self-fluxing alloy particles.
Claim 13
Dependent Claim
96 words
A bearing member of an internal-combustion engine possessing a good resistance to heat, wear, and scuffing; which does not seriously wear a mating member; and having a bearing face coated with a flame sprayed material, the flame sprayed layer on the bearing face being composed of self-fluxing alloy particles and particles of ferrochrome dispersed uniformly within and retained by the self-fluxing alloy particles, and the amount of ferrochrome particles and the amount of self-fluxing alloy particles being from 55% to 90% and from 10% to 45%, respectively, based on the weight of said flame sprayed layer.
Claim 14
Dependent Claim
96 words
A bearing member of an internal-combustion engine possessing a good resistance to heat, wear, and scuffing; which does not seriously wear a mating member; and having a bearing face coated with a flame sprayed material, the flame sprayed layer on the bearing face being composed of self-fluxing alloy particles and particles of ferrochrome dispersed uniformly within and retained by the self-fluxing alloy particles, and the amount of ferrochrome particles and the amount of self-fluxing alloy particles being from 55% to 90% and from 10% to 45%, respectively, based on the weight of said flame sprayed layer.
Claim 15
Dependent Claim
114 words
A bearing member of an internal-combustion engine possessing a good resistance to heat, wear, and scuffing; which does not seriously wear a mating member; and having a bearing face coated with a flame sprayed material, the flame sprayed layer on the bearing face being composed of molybdenum particles, self-fluxing alloy particles, and particles of ferrochrome, the molybdenum particles and the ferrochrome particles being dispersed uniformly within and retained by the self-fluxing alloy particles, and the amounts of the component particles being approximately, based on the weight of the flame sprayed layer, (a) ferrochrome particles: from 55% to 85%; (b) self-fluxing alloy particles: from 10% to 30%; and (c) molybdenum particles: from 5% to 15%.
Claim 16
Dependent Claim
114 words
A bearing member of an internal-combustion engine possessing a good resistance to heat, wear, and scuffing; which does not seriously wear a mating member; and having a bearing face coated with a flame sprayed material, the flame sprayed layer on the bearing face being composed of molybdenum particles, self-fluxing alloy particles, and particles of ferrochrome, the molybdenum particles and the ferrochrome particles being dispersed uniformly within and retained by the self-fluxing alloy particles, and the amounts of the component particles being approximately, based on the weight of the flame sprayed layer, (a) ferrochrome particles: from 55% to 85%; (b) self-fluxing alloy particles: from 10% to 30%; and (c) molybdenum particles: from 5% to 15%.
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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) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |