Patent US4648903A successfully refreshed from Google Patents.
US4648903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron base sintered, wear-resistant materials and method for producing the same
Assignee: Resonac Corp
•
Filing: 1985-02-28
•
Granted: 1987-03-10
•
Expires: 2005-02-28
Abstract
Abstract An iron base sintered, wear-resistant material consisting substantially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3V and 0.5-2% Ni, 10-25% of Cu and the balance being essentially Fe.
Inventors
- 👤 Yutaka Ikenoue
- 👤 Hiroyuki Endoh
- 👤 Kei Ishii
- 👤 Keitaro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:55
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0285
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A iron base sintered, wear-resistant powder compact, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 2
Dependent Claim
49 words
A iron base sintered, wear-resistant powder compact, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 3
Dependent Claim
23 words
The wear-resistant powder compact as defined in claim 1, in which said copper is substituted with the same amount of a copper alloy.
Claim 4
Dependent Claim
18 words
The wear-resistant powder compact as defined in claim 2, in which said copper alloy is a Cu-Sn alloy.
Claim 5
Dependent Claim
18 words
The wear-resistant powder compact as defined in claim 2, in which said copper alloy is a Cu-Ni alloy.
Claim 6
Dependent Claim
31 words
The compact of claim 1, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 7
Dependent Claim
82 words
A process for the production of iron base sintered, wear-resistant alloys, in which 10-25 weight % of copper or copper alloy powders and 0.5-3 weight % of carbon powders are added to the powders of an alloy consisting essentially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni and the balance being essentially Fe, and the resulting powders is sintered.
Claim 8
Dependent Claim
82 words
A process for the production of iron base sintered, wear-resistant alloys, in which 10-25 weight % of copper or copper alloy powders and 0.5-3 weight % of carbon powders are added to the powders of an alloy consisting essentially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni and the balance being essentially Fe, and the resulting powders is sintered.
References Cited (Backward Citations)
GB499561A
Cited
GB856646A
Cited
US3986867A
Cited
US4128420A
Cited
US4268309A
Cited
US4344795A
Cited
SU897886A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |