US3556747A
Expired / Lapsed
US
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Piston ring coatings for high temperature applications
Assignee: KAYDON ACQUISITION Inc A DE CORP
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Filing: 1967-11-07
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Granted: 1971-01-19
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Expires: 1987-11-07
Abstract
Abstract A COATING FOR PISTON RINGS WHICH CAN BE USED IN INTERNAL COMBUSTION ENGINES SUCH AS DIESEL ENGINES AT TEMPERATURES ABOUT 700*F. COMPRISES A MIXTURE OF CHROMIUM CARBIDE AND MOLYBDENUM WHICH MAY ALSO INCLUDE A MINOR PORTION OF A NICKEL-CHROMIUM ALLOY. THE COMPOSITION IS APPLIED TO THE PISTON RING WITH A PLASMA-ARC GUN TO BOND THE COMPOSITION TO THE BASE MATERIAL.
Inventors
- 👤 Glenn F Hyde
- 👤 John E Cromwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:10
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; F; F16; F16J; F16J9/00; F16J9/26; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12139
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |