US3922444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding member
Assignee: Nippon Piston Ring Co Ltd
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Filing: 1973-07-13
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Granted: 1975-11-25
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Expires: 1993-07-13
Abstract
Abstract A sliding member having a sliding surface layer produced by spraying on a surface of a base body a mixture composed of one or more metallic compounds selected from a group consisting of metal oxide, metal carbide and self-fluxing metal and Fe3O4 dispersed in said metallic compounds in amount of more than 5% of the latter.
Inventors
- 👤 Yoshikatsu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:24
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/26; C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12611; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A METAL SLIDING MEMBER HAVING A SLIDING SURFACE LAYER PRODUCED BY SPRAYING ON A SURFACE OF A BASE BODY OF MIXTURE COMPOSED OF ONE OR MORE METALLIC MATERIALS SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES, METAL CARBIDES, AND SELF-FLUXING METAL ALLOYS, WITH FE3O4 DISPERSED IN THE ONE OR MORE METALLIC COMPOUNDS IN AN AMOUNT OF MORE THAN 5% OF THE ONE OR MORE METALLIC COMPOUNDS.
Claim 2
Dependent Claim
66 words
A METAL SLIDING MEMBER HAVING A SLIDING SURFACE LAYER PRODUCED BY SPRAYING ON A SURFACE OF A BASE BODY OF MIXTURE COMPOSED OF ONE OR MORE METALLIC MATERIALS SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES, METAL CARBIDES, AND SELF-FLUXING METAL ALLOYS, WITH FE3O4 DISPERSED IN THE ONE OR MORE METALLIC COMPOUNDS IN AN AMOUNT OF MORE THAN 5% OF THE ONE OR MORE METALLIC COMPOUNDS.
Claim 3
Dependent Claim
15 words
The metal sliding member of claim 1 wherein the metal oxide is Al2O3 or Cr2O3.
Claim 4
Dependent Claim
15 words
The metal sliding member of claim 1 wherein the metal carbide is Cr3Cr2 or WC.
Claim 5
Dependent Claim
22 words
The metal sliding member of claim 1 wherein the self-fluxing metal alloy is Ni-B-Si alloy, Ni-Cr-B-Si alloy, Ni-Co-Cr-B-Si alloy or Ni-W-B-Si alloy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |