US4344795A
Expired / Lapsed
US
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Iron-based sintered sliding product
Assignee: Resonac Corp
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Filing: 1980-02-20
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Granted: 1982-08-17
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Expires: 2000-02-20
Abstract
Abstract An iron-based sintered sliding product having improved contact fitness and resistance to wear, in which 0.1 to 3 wt. % free graphite and Fe--P--C ternary alloy phase of hardness MHv 300 to 850 having over 3% to 20% of area are dispersed into an iron-based matrix containing either one selected from 0.1 to 1 wt. % Sn and 0.1 to 1 wt. % Zn, and 1 to 10 wt. % Cu and 0.3 to 1 wt. % C. As a modified embodiment of the present invention, an alloy containing Fe--Mo as a main component may be dispersed into the iron-based matrix in place of the aforesaid Fe--P--C ternary alloy phase. Said Fe--P--C ternary alloy phase may be prepared by mixing a single metal element, Fe, C and P into the powdered raw material of the iron-based matrix. Alternatively, said Fe--P--C ternary alloy phase may be prepared by mixing Fe--P--C alloy powder into the powdered raw material of the iron-based matrix. Further, an alloy containing Fe--Mo as a main component may be prepared by mixing Fe--Mo--Si alloy powder into the powdered raw material of the iron-based matrix.
Inventors
- 👤 Hiroyuki Endo
- 👤 Yutaka Ikenoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0207; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
An iron-based sintered sliding product, wherein 0.1 weight % to 3 weight % free graphite and Fe - P - C ternary alloy phase having a hardness of MHv 300 to 850 and having an area ratio of 3% to 20% are dispersed in an iron-based matrix containing either from 0.1 weight % to 1 weight % Sn or 0.1 weight % to 1 weight % Zn, and 1 weight % to 10 weight % Cu and 0.3 weight % to 1 weight % C.
Claim 2
Dependent Claim
85 words
An iron-based sintered sliding product, wherein 0.1 weight % to 3 weight % free graphite and Fe - P - C ternary alloy phase having a hardness of MHv 300 to 850 and having an area ratio of 3% to 20% are dispersed in an iron-based matrix containing either from 0.1 weight % to 1 weight % Sn or 0.1 weight % to 1 weight % Zn, and 1 weight % to 10 weight % Cu and 0.3 weight % to 1 weight % C.
Claim 3
Dependent Claim
37 words
An iron-base sintered sliding product as set forth in claim 1, wherein said iron-based matrix of the sintered sliding product contains Cu - Sn alloy powder or Cu - Zn alloy powder dispersed therein as dispersion material.
Claim 4
Dependent Claim
38 words
An iron-based sintered sliding product as set forth in claim 1, wherein said iron-based matrix of the sintered sliding product contains a single metal element, Sn or Zn and Cu, in powder form dispersed therein as dispersion material.
Claim 5
Dependent Claim
35 words
An iron-base sintered sliding product as set forth in claims 1 through 3, wherein the free graphite to be dispersed in said iron-based matrix is prepared by mixing natural graphite with the powdered raw material.
Claim 6
Dependent Claim
49 words
An iron-based sintered sliding product as set forth in claim 1, wherein the Fe - P - C ternary hardened material to be dispersed in said iron-based matrix is prepared by separately mixing a single metal element, Fe, C and P in powder form, with the powdered raw material.
Claim 7
Dependent Claim
47 words
An iron-based sintered sliding product as set forth in claim 1, wherein the Fe - P - C ternary alloy phase to be dispersed in said iron-based matrix is prepared by mixing an Fe - C - P alloy in powder form with the powdered raw material.
Claim 8
Dependent Claim
86 words
An iron-based sintered sliding product wherein a Fe - Mo alloy phase having a hardness of MHv 300 to 850 and having an area ratio of 3% to 20% and 0.1 weight % to 3 weight % free graphite are dispersed as main components into an iron-based matrix containing either from 0.1 weight % to 1 weight % Sn or 0.1 weight % to 1 weight % Zn, and 1 weight % to 10 weight % Cu and 0.3 weight % to 1 weight % C.
Claim 9
Dependent Claim
86 words
An iron-based sintered sliding product wherein a Fe - Mo alloy phase having a hardness of MHv 300 to 850 and having an area ratio of 3% to 20% and 0.1 weight % to 3 weight % free graphite are dispersed as main components into an iron-based matrix containing either from 0.1 weight % to 1 weight % Sn or 0.1 weight % to 1 weight % Zn, and 1 weight % to 10 weight % Cu and 0.3 weight % to 1 weight % C.
Claim 10
Dependent Claim
38 words
An iron-based sintered sliding product as set forth in claim 7, wherein said iron-based matrix of the sintered sliding product contains Cu - Sn alloy powder or Cu - Zn alloy powder dispersed therein as a dispersion material.
Claim 11
Dependent Claim
39 words
An iron-based sintered sliding product as set forth in claim 7, wherein said iron-based matrix of the sintered sliding product contains a single metal element, Sn or Zn and Cu in powder, form dispersed therein as a dispersion material.
Claim 12
Dependent Claim
34 words
An iron-based sintered sliding product as set forth in claims 7 through 9, wherein free graphite to be dispersed in said iron-based matrix is prepared by mixing natural graphite with the powdered raw material.
Claim 13
Dependent Claim
48 words
An iron-based sintered sliding product as set forth in claim 7, wherein an alloy containing Fe - Mo alloy as a main component to be dispersed in said iron-based matrix is prepared by mixing Fe - Mo - Si alloy in powder form with the powdered raw material.
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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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |