Patent US5618873A successfully refreshed from Google Patents.
US5618873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding member
Assignee: Daido Metal Co Ltd
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Filing: 1995-07-20
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Granted: 1997-04-08
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Expires: 2015-07-20
Abstract
Abstract A sliding member obtained by molding a resin composition comprising an aromatic polyamide fiber, a polytetrafluoroethylene, a lead oxide and at least one other heat resistant synthetic resin, the aromatic polyamide fiber being in a proportion of 10 to 30% by volume based on the total volume of the aromatic polyamide fiber, the polytetrafluoroethylene, the lead oxide and the other heat resistant synthetic resin, the polytetrafluoroethylene being in a proportion of 5 to 20% by volume based on the total volume, and the lead oxide being in a proportion of 0.1 to less than 5% by volume based on the total volume, and provided that the total of the aromatic polyamide fiber, the polytetrafluoroethylene, the lead oxide and the other heat resistant synthetic resin equals to 100% by volume.
Inventors
- 👤 Tadashi Tanaka
- 👤 Masaaki Sakamoto
- 👤 Nobutaka Hiramatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:17
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; C08L81/00; C08L81/02; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C08L77/00; C08L77/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
A sliding member obtained by molding a resin composition comprising an aromatic polyamide fiber, a polytetrafluoroethylene, lead monoxide and at least one other heat resistant synthetic resin, the aromatic polyamide fiber being in a proportion of 10 to 30% by volume based on the total volume of the aromatic polyamide fiber, the polytetrafluoroethylene, the lead monoxide and the other heat resistant synthetic resin, the polytetrafluoroethylene being in a proportion of 5 to 20% by volume based on the total volume, and the lead monoxide being in a proportion of 0.1 to 4% by volume based on the total volume.
Claim 2
Dependent Claim
99 words
A sliding member obtained by molding a resin composition comprising an aromatic polyamide fiber, a polytetrafluoroethylene, lead monoxide and at least one other heat resistant synthetic resin, the aromatic polyamide fiber being in a proportion of 10 to 30% by volume based on the total volume of the aromatic polyamide fiber, the polytetrafluoroethylene, the lead monoxide and the other heat resistant synthetic resin, the polytetrafluoroethylene being in a proportion of 5 to 20% by volume based on the total volume, and the lead monoxide being in a proportion of 0.1 to 4% by volume based on the total volume.
Claim 3
Dependent Claim
30 words
The sliding member according to claim 1, wherein said at least one other heat resistant synthetic resin is selected from the group consisting of polyphenylene sulfides, polyetheretherketones, polyimides and polyamideimides.
Claim 4
Dependent Claim
26 words
The sliding member according to claim 1, wherein the polytetrafluoroethylene is in the form of particles having an average particle size of 25 μm or less.
Claim 5
Dependent Claim
33 words
The sliding member according to claim 1, which further comprises at least one melt moldable fluoroplastic in a proportion of 0.1 to 15% by volume of the total volume of the resin composition.
Claim 6
Dependent Claim
33 words
The sliding member according to claim 3, which further comprises at least one melt moldable fluoroplastic in a proportion of 0.1 to 15% by volume of the total volume of the resin composition.
Claim 7
Dependent Claim
26 words
The sliding member according to claim 2, wherein the polytetrafluoroethylene is in the form of particles having an average particle size of 25 μm or less.
Claim 8
Dependent Claim
33 words
The sliding member according to claim 6, which further comprises at least one melt moldable fluoroplastic in a proportion of 0.1 to 15% by volume of the total volume of the resin composition.
Claim 9
Dependent Claim
19 words
The sliding member according to claim 1, wherein said proportion of said aromatic polyamide fiber is 15-25% by volume.
Claim 10
Dependent Claim
16 words
The sliding member according to claim 1, wherein said proportion of polytetrafluoroethylene is 10-15% by volume.
Claim 11
Dependent Claim
31 words
The sliding member according to claim 1, wherein the total of the aromatic polyamide fiber, the polytetrafluoroethylene, the lead monoxide and the other heat resistant synthetic resin equals 100% by volume.
Claim 12
Dependent Claim
30 words
The sliding member according to claim 3, wherein said at least one other heat resistant synthetic resin is selected from the group consisting of polyphenylene sulfides, polyetheretherketones, polyimides and polyamideimides.
Claim 13
Dependent Claim
19 words
The sliding member according to claim 3, wherein said proportion of said aromatic polyamide fiber is 15-25% by volume.
Claim 14
Dependent Claim
16 words
The sliding member according to claim 12, wherein said proportion of polytetrafluoroethylene is 10-15% by volume.
Claim 15
Dependent Claim
16 words
The sliding member according to claim 3, wherein said proportion of polytetrafluoroethylene is 10-15% by volume.
References Cited (Backward Citations)
JPS6032848A
Cited
GB2177099A
Cited
JPS6210166A
Cited
JPH01242662A
Cited
US5091098A
Cited
JPH0465866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |