Patent US5041339A successfully refreshed from Google Patents.
US5041339A
Expired / Lapsed
US
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Multilayered sliding material of lead bronze containing graphite and method of manufacturing the same
Assignee: Daido Metal Co Ltd
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Filing: 1989-08-21
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Granted: 1991-08-20
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Expires: 2009-08-21
Abstract
Abstract A multilayered sliding material of lead bronze containing graphite in the form of a bimetal, comprising a steel plate or a steel plate having a copper plating coating and a sintered copper alloy bonded to the steel plate, the sintered copper alloy having a composition consisting of 5 to 16 wt % Sn, 2 to 20 wt % Pb, 0.03 to 1 wt % P, 0.5 to 3.9 wt % graphite, and the balance Cu, wherein hardness of the alloy exceeds Hv 100.
Inventors
- 👤 Sanae Mori
- 👤 Masaaki Sakamoto
- 👤 Koichi Yamamoto
- 👤 Kenji Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:09
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/122; B22; B22F; B22F2998/00; B22F2998/10; F16C2204/00; F16C2204/10; F16C2204/12; F16C2204/60; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12063
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A multilayered sliding material of lead bronze containing graphite in the form of a bimetal, comprising of a steel plate or a steel plate having a copper plating coating and a sintered copper alloy bonded to said steel plate, said sintered copper alloy having a composition consisting of 5 to 16 wt% Sn, 2 to 20 wt% Pb, 0.03 to 1 wt% P, 0.5 to 3.9 wt% graphite, and the balance Cu and incidental impurities, wherein hardness of said alloy is not less than Hv 100.
Claim 2
Dependent Claim
86 words
A multilayered sliding material of lead bronze containing graphite in the form of a bimetal, comprising of a steel plate or a steel plate having a copper plating coating and a sintered copper alloy bonded to said steel plate, said sintered copper alloy having a composition consisting of 5 to 16 wt% Sn, 2 to 20 wt% Pb, 0.03 to 1 wt% P, 0.5 to 3.9 wt% graphite, and the balance Cu and incidental impurities, wherein hardness of said alloy is not less than Hv 100.
Claim 3
Dependent Claim
90 words
A multilayered sliding material of lead bronze containing graphite in the form of a bimetal, comprising a steel plate or a steel plate having a copper plating coating and a sintered copper alloy bonded to said steel plate, said sintered copper alloy having a composition consisting of 5 to 16 wt% Sn, 1 to 8 wt% Ni, 2 to 20 wt% Pb, 0.03 to 1 wt% P, 0.5 to 3.9 wt% graphite, and the balance Cu and incidental impurities, wherein hardness of said alloy is not less than Hv 100.
Claim 4
Dependent Claim
90 words
A multilayered sliding material of lead bronze containing graphite in the form of a bimetal, comprising a steel plate or a steel plate having a copper plating coating and a sintered copper alloy bonded to said steel plate, said sintered copper alloy having a composition consisting of 5 to 16 wt% Sn, 1 to 8 wt% Ni, 2 to 20 wt% Pb, 0.03 to 1 wt% P, 0.5 to 3.9 wt% graphite, and the balance Cu and incidental impurities, wherein hardness of said alloy is not less than Hv 100.
Claim 5
Independent Claim
101 words
A method of producing a multilayered sliding material of lead bronze containing graphite in the form of a bimetal comprising the steps of preparing a mixture powder of both lead bronze powder passing through 200 mesh and graphite powder passing through 350 mesh, disposing the mixture powder on a surface of a steel plate or a steel plate having a plating coating such as copper, performing at least one sintering and at least one rolling step, and effecting a final rolling at a relatively high rolling reduction in order to obtain more than 100 vickers hardness of the sintered copper alloy.
Claim 6
Independent Claim
101 words
A method of producing a multilayered sliding material of lead bronze containing graphite in the form of a bimetal comprising the steps of preparing a mixture powder of both lead bronze powder passing through 200 mesh and graphite powder passing through 350 mesh, disposing the mixture powder on a surface of a steel plate or a steel plate having a plating coating such as copper, performing at least one sintering and at least one rolling step, and effecting a final rolling at a relatively high rolling reduction in order to obtain more than 100 vickers hardness of the sintered copper alloy.
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |