US5217814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered sliding material
Assignee: Taiho Kogyo Co Ltd
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Filing: 1992-02-07
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Granted: 1993-06-08
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Expires: 2012-02-07
Abstract
Abstract The wear resistance and seizure resistance of the sliding material consisting of a metal backing, a Cu-based sintered layer, and resin and solid lubricant filled in the pores of the sintered layer are improved by determining the following features (a) multi-layer Cu particles; from 30 to 200 mu m of the diameter of the Cu particles; porosity of from 5 to 70% of the sintered layer; resin, MoS2 and graphite filled in the pores.
Inventors
- 👤 Shinya Kawakami
- 👤 Shinichi Miziguchi
- 👤 Tatsuhiko Fukuoka
- 👤 Yasunori Kabeya
- 👤 Keiichi Shimasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:42
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C; C22; C22C; C22C32/00; C22C32/0089; F16C33/24; F16C2208/00; F16C2208/20; F16C2208/40; F16C2208/42; F16C2240/00; F16C2240/40; F16C33/06; F16C33/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12007; Y10T428/12014
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
91 words
A sliding material comprising a metal backing; and a layer comprising multi-layers of sintered Cu or Cu-alloy particles 30 to 200 μm in diameter deposited on the metal backing; said layer having from 5 to 70% by volume of pores filled with additives comprising a resin and solid lubricant, said lubricant comprising from 30 to 80% by weight of molybdenum disulfide and graphite based on weight of the additives; wherein the surface of said layer is machined and contains 30-95% of said Cu or Cu-alloy and the balance is said additives.
Claim 2
Dependent Claim
91 words
A sliding material comprising a metal backing; and a layer comprising multi-layers of sintered Cu or Cu-alloy particles 30 to 200 μm in diameter deposited on the metal backing; said layer having from 5 to 70% by volume of pores filled with additives comprising a resin and solid lubricant, said lubricant comprising from 30 to 80% by weight of molybdenum disulfide and graphite based on weight of the additives; wherein the surface of said layer is machined and contains 30-95% of said Cu or Cu-alloy and the balance is said additives.
Claim 3
Dependent Claim
128 words
A sliding material comprising a metal backing and a layer comprising layers of sintered Cu or Cu-alloy particles 30 to 200 μm in diameter deposited on the metal backing; said layer having from 5 to 70% by volume of pores filled with additives comprising a resin and a solid lubricant, said lubricant consisting of from 30 to 80% by weight of molybdenum disulfide and graphite and from 3 to 20% by weight of a at least one member selected from the group consisting of tungsten disulfide, BN, fluorine plastics, and Pb based on weight of the additives; wherein the surface of said layer is machined and contains 30-95% of said Cu or Cu-alloy based on the surface area of the machined surface and the balance is said additives.
Claim 4
Dependent Claim
128 words
A sliding material comprising a metal backing and a layer comprising layers of sintered Cu or Cu-alloy particles 30 to 200 μm in diameter deposited on the metal backing; said layer having from 5 to 70% by volume of pores filled with additives comprising a resin and a solid lubricant, said lubricant consisting of from 30 to 80% by weight of molybdenum disulfide and graphite and from 3 to 20% by weight of a at least one member selected from the group consisting of tungsten disulfide, BN, fluorine plastics, and Pb based on weight of the additives; wherein the surface of said layer is machined and contains 30-95% of said Cu or Cu-alloy based on the surface area of the machined surface and the balance is said additives.
Claim 5
Dependent Claim
22 words
A sliding material according to claim 1 or 2, wherein said machined surface comprises 85% or less of said Cu or Cu-alloy.
Claim 6
Dependent Claim
21 words
A sliding material according to claim 3, wherein said machined surface comprises from 30 to 80% of said Cu or Cu-alloy.
Claim 7
Dependent Claim
24 words
A sliding material according to claim 1 or 2, wherein said additives comprise from 35 to 55% by weight of molybdenum disulfide and graphite.
Claim 8
Dependent Claim
45 words
A sliding material according to claim 5, wherein said molybdenum disulfide is filled in the pores of the sintered Cu or Cu-alloy in an amount cf from 10 to 50% by weight based on the weight of the additives and the Cu or Cu alloy.
Claim 9
Dependent Claim
45 words
A sliding material according to claim 6, wherein said molybdenum disulfide is filled in the pores of the sintered Cu or Cu-alloy in an amount of from 15 to 35% by weight based on the weight of the additives and the Cu or Cu alloy.
Claim 10
Dependent Claim
44 words
A sliding material according to claim 5, wherein said graphite is filled in the pores of the sintered Cu or Cu-alloy in an amount of from 2 to 40% by weight based on the weight of the additives and the Cu or Cu alloy.
Claim 11
Dependent Claim
44 words
A sliding material according to claim 8, wherein said graphite is filled in the pores of the sintered Cu or Cu-alloy in an amount of from 15 to 30% by weight based on the weight of the additives and the Cu or Cu alloy.
Claim 12
Dependent Claim
22 words
A sliding material according to claim 1 or 2, wherein said additives comprise from 20 to 70% by weight of the resin.
Claim 13
Dependent Claim
28 words
A sliding material according to claim 10, wherein said resin is selected from the group consisting of aromatic polyimide resin and a modified resin of aromatic polyimide resin.
Claim 14
Dependent Claim
13 words
A sliding material according to claim 10, wherein said resin is phenol resin.
Claim 15
Dependent Claim
17 words
A sliding material according to claim 1 or 2, wherein said porosity is from 10 to 60%.
Claim 16
Dependent Claim
15 words
A sliding material according to claim 13, wherein said porosity is from 30 to 50%.
Claim 17
Dependent Claim
29 words
A sliding material according to claim 1 or 2, wherein said Cu or Cu-alloy particles comprises irregularaly shaped particles having an average-long diameter of from 30 to 200 μm.
Claim 18
Dependent Claim
29 words
A sliding material according to claim 15, wherein 50% or more of said alloy particles is said irregularly shaped particles, whose ratio of short-diameter/long-diamter is from 0.2 to 0.7.
Claim 19
Dependent Claim
48 words
A sliding material according to claim 1 or 2, produced by sintering said Cu or Cu-alloy onto the metal backing, impregnating the pores of sintered Cu or Cu-alloy with said additives, and then machining the surface of the sintered layer to a depth of at least 100 μm.
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |