US4737539A
Expired / Lapsed
US
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Bearing resin material
Assignee: Taiho Kogyo Co Ltd
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Filing: 1987-03-30
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Granted: 1988-04-12
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Expires: 2007-03-30
Abstract
Abstract Resin bearing material consists essentially of at least one thermoplastic resin material selected from the group consisting of polyacetal, polyamide, polycarbonate, polyphenylene sulfide, polyethylene terephthalate, and ultra-high molecular weight polyethylene, and of aromatic group, polyamide fiber, and is produced by the steps comprising kneading and extruding said at least one thermoplastic resin material and the cutting the extruded material. The sliding characteristics are superior to the conventional oleo-bearing materials containing the carbon fiber, and glass fiber.
Inventors
- 👤 Osamu Jinno
- 👤 Tatsuhiko Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:05
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C; C08; C08L; C08L101/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
45 words
A bearing material formed from a resin material consisting essentially of: (A) at least one thermoplastic resin material selected from the group consisting of polyacetal, polyamide, polycarbonate, polyphenylene sulfide, polyethylene terephthalate, and ultra-high molecular weight polyethylene, (B) aromatic group, polyamide fiber, and (C) a lubricant.
Claim 2
Dependent Claim
45 words
A bearing material formed from a resin material consisting essentially of: (A) at least one thermoplastic resin material selected from the group consisting of polyacetal, polyamide, polycarbonate, polyphenylene sulfide, polyethylene terephthalate, and ultra-high molecular weight polyethylene, (B) aromatic group, polyamide fiber, and (C) a lubricant.
Claim 3
Dependent Claim
22 words
Resin bearing according to claim 1, wherein the aromatic group, polyamide fiber is in the form of short fibers free of entanglement.
Claim 4
Dependent Claim
36 words
Resin bearing according to claim 2, wherein said material is produced by the steps comprising kneading and extruding said at least one thermoplastic resin material and aromatic group polyamide fiber and then cutting the extruded material.
Claim 5
Dependent Claim
26 words
Resin bearing according to claim 3, wherein said cutting is performed to form the aromatic group, polyamide fiber having a length of 0.3 mm or less.
Claim 6
Dependent Claim
22 words
Resin bearing according to claim 1, wherein the content of said aromatic group, polyamide fiber is from 0.05 to 20% by weight.
Claim 7
Dependent Claim
16 words
Resin bearing according to claim 5, wherein said content is from 0.1 to 15% by weight.
Claim 8
Dependent Claim
13 words
Resin bearing according to claim 1, wherein the lubricant comprises a lubricating oil.
Claim 9
Dependent Claim
19 words
Resin bearing according to claim 7, wherein the content of lubricating oil is from 0.5 to 15% by weight.
Claim 10
Dependent Claim
9 words
Resin bearing according to claim 1, further comprising polytetrafluoroethylene.
Claim 11
Dependent Claim
18 words
Resin bearing according to claim 9, wherein the content of polytetrafluoroethylene is 25% by weight at the highest.
Claim 12
Dependent Claim
14 words
Resin bearing according to claim 10, wherein the content is from 0.5 to 15%.
Claim 13
Dependent Claim
13 words
Resin bearing according to claim 1, wherein the lubricant comprises a solid lubricant.
Claim 14
Dependent Claim
19 words
Resin bearing according to claim 12, wherein the content of solid lubricant is 10% by weight at the highest.
Claim 15
Dependent Claim
14 words
Resin bearing according to claim 13, wherein the content is from 0.1 to 5%.
Claim 16
Dependent Claim
14 words
Resin bearing according to claim 1, further comprising a solid lubricant and a polytetrafluoroethylene.
Claim 17
Dependent Claim
26 words
Resin according to claim 15, wherein the content of polytetrafluoroethylene is 25% at the highest and the content of solid lubricant is 10% at the highest.
Claim 18
Dependent Claim
13 words
Resin bearing according to claim 1, further comprising a lubricating oil and polytetrafluoroethylene.
Claim 19
Dependent Claim
31 words
Resin bearing according to claim 17, wherein the content of lubricating oil is from 0.5 to 15% by weight and the content of polytetrafluoroethylene is 25% by weight at the highest.
Claim 20
Dependent Claim
18 words
Resin bearing material according to claim 1, further comprising a solid lubricant, a lubricating oil and a polytetrafluoroethylene.
References Cited (Backward Citations)
US4532275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |