US4495907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber components for internal combustion engines
Assignee: Cummins Engine IP Inc
•
Filing: 1983-01-18
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Granted: 1985-01-29
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Expires: 2003-01-18
Abstract
Abstract Combustion chamber defining components such as cylinder liners in internal combustion engines are composed of a plurality of metal oxides which combine to impart good wear resistance and thermally insulative characteristics.
Inventors
- 👤 Roy Kamo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/02; C; C23; C23C; C23C18/00; C23C18/02; C23C18/12; C23C18/1204; C23C18/1208; C23C18/1216; C23C18/1225; C23C18/1229; C23C18/1241; F05; F05C; F05C2201/00; F05C2201/04; F05C2201/043; F05C2251/00; F05C2251/04; F05C2251/048; F05C2251/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A combustion chamber defining component of an internal combustion engine having on a surface thereof a layer of a thermally insulative material with particles of chromium oxide dispersed at least partially therewithin and wherein the thermally insulative material is secured to the surface of the combustion chamber defining component by a coating of a bond material wherein the bond material is an alloy of nickel, iron and chrome.
Claim 2
Dependent Claim
68 words
A combustion chamber defining component of an internal combustion engine having on a surface thereof a layer of a thermally insulative material with particles of chromium oxide dispersed at least partially therewithin and wherein the thermally insulative material is secured to the surface of the combustion chamber defining component by a coating of a bond material wherein the bond material is an alloy of nickel, iron and chrome.
Claim 3
Dependent Claim
26 words
A combustion chamber defining component in accordance with claim 1 wherein the thermally insulative material consists of yttrium stabilized zirconium oxide or magnesia stabilized zirconium oxide.
Claim 4
Dependent Claim
15 words
A combustion chamber defining component in accordance with claim 1 which is a cylinder liner.
Claim 5
Dependent Claim
16 words
A combustion chamber defining component in accordance with claim 1 which is a piston cylinder wall.
Claim 6
Dependent Claim
15 words
A combustion chamber defining component in accordance with claim 1 which is a cylinder head.
Claim 7
Dependent Claim
15 words
A combustion chamber defining component in accordance with claim 1 which is a exhaust port.
Claim 8
Dependent Claim
15 words
A combustion chamber defining component in accordance with claim 1 which is a piston crown.
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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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |