Patent US4698179A successfully refreshed from Google Patents.
US4698179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric conductive and sliding resin material
Assignee: Taiho Kogyo Co Ltd
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Filing: 1986-05-23
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Granted: 1987-10-06
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Expires: 2006-05-23
Abstract
Abstract The present invention proposes a thermoplastic resin material having both good sliding characteristics and a high electric conductivity and comprising (a) graphite and carbon black, (b) graphite, carbon black, and lubricating oil, (c) carbon black and lubricating oil, or (d) fluorine resin in addition to (a)-(c).
Inventors
- 👤 Osamu Suzuki
- 👤 Eizi Asada
- 👤 Tatsuhiko Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:00
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/10; H02G15/103; C; C08; C08L; C08L101/00; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01R; H01R4/00; H01R4/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
85 words
A conductive and sliding resin material having an improved electric conductivity and improved sliding characteristics and comprising (A) a thermoplastic resin selected from the group consisting of polyphenylene oxide, polyphenylene sulfide, polybutylenephthalate, polyamide, polycarbonate and polyacetal and (B) finely divided polytetrafluoroethylene, said polytetrafluoroethylene being present in an amount of from about 0.6% to 25% by weight; and dispersed in said resins, (C) 3 to 40% by weight of graphite and (D) carbon black in an amount effective to enhance the electric conductivity of said material.
Claim 2
Dependent Claim
85 words
A conductive and sliding resin material having an improved electric conductivity and improved sliding characteristics and comprising (A) a thermoplastic resin selected from the group consisting of polyphenylene oxide, polyphenylene sulfide, polybutylenephthalate, polyamide, polycarbonate and polyacetal and (B) finely divided polytetrafluoroethylene, said polytetrafluoroethylene being present in an amount of from about 0.6% to 25% by weight; and dispersed in said resins, (C) 3 to 40% by weight of graphite and (D) carbon black in an amount effective to enhance the electric conductivity of said material.
Claim 3
Dependent Claim
23 words
A conductive and sliding resin material according to claim 1, wherein the amount of carbon black is from 7% to 30% by weight.
Claim 4
Dependent Claim
23 words
A coductive and sliding resin material according to claim 2, wherein the amount of carbon black is from 3% to 10% by weight.
Claim 5
Dependent Claim
23 words
A conductive and sliding resin material according to claim 3, wherein the amount of carbon black is from 7% to 10% by weight.
Claim 6
Dependent Claim
31 words
A conductive and sliding resin material according to claim 1, wherein said graphite consists of particles which are one member selected from the group consisting of natural graphite and synthetic graphite.
Claim 7
Dependent Claim
18 words
A conductive and sliding resin material according to claim 5, wherein said graphite particles consists of synthetic graphite.
Claim 8
Dependent Claim
23 words
A conductive and sliding resin material according to claim 1, wherein said carbon black consists of ultra-fine particles 10Å or less in size.
Claim 9
Dependent Claim
21 words
In a conductive and sliding resin material according to claim 1, an improvement further comprises incorporating lubricating oil into said material.
Claim 10
Dependent Claim
34 words
A conductive and sliding resin material according to claim 8, wherein the amount of graphite is from 3% to 40% by weight and the amount of lubricating oil is 10% or less by weight.
Claim 11
Dependent Claim
23 words
A conductive and sliding resin material according to claim 9, wherein the amount of carbon black is from 7% to 30% by weight.
Claim 12
Dependent Claim
23 words
A conductive and sliding resin material according to claim 9, wherein the amount of carbon black is from 3% to 10% by weight.
Claim 13
Dependent Claim
23 words
A conductive and sliding resin material according to claim 9, wherein the amount of carbon black is from 7% to 10% by weight.
Claim 14
Dependent Claim
31 words
A conductive and sliding resin material according to claim 8, wherein said graphite consists of particles which are one member selected from the group consisting of natural graphite and synthetic graphite.
Claim 15
Dependent Claim
18 words
A conductive and sliding resin material according to claim 13, wherein said graphite particles consist of synthetic graphite.
Claim 16
Dependent Claim
23 words
A conductive and sliding resin material according to claim 8, wherein said carbon black consists of ultra-fine particles 10Å or less in size.
Claim 17
Dependent Claim
21 words
A conductive and sliding resin material according to claim 13 or 15, wherein said lubricating oil is impregnated into said material.
Claim 18
Dependent Claim
16 words
A conductive and sliding resin material according to claim 8, wherein said fluorine plastic is polytetrafluoroethylene.
Claim 19
Dependent Claim
93 words
A conductive and sliding resin material having an improved electric conductivity and improved sliding characteristics and comprising (A) a thermoplastic resin selected form the group consisting of polyphenylene oxide, polyphenylene sulfide, polybutylenephthalate, polyamide, polycarbonate and polyacetal and (B) finely divided polytetrafluoroethylene, said polytetrafluoroethylene being present in an amount of from about 0.6% to 25% by weight; and dispersed in said resins, (C) carbon black in an amount effective to enhance the electric conductivity of said material and (D) a lubricating oil in an amount effective to enhance the lubricating characteristics of said material.
Claim 20
Dependent Claim
93 words
A conductive and sliding resin material having an improved electric conductivity and improved sliding characteristics and comprising (A) a thermoplastic resin selected form the group consisting of polyphenylene oxide, polyphenylene sulfide, polybutylenephthalate, polyamide, polycarbonate and polyacetal and (B) finely divided polytetrafluoroethylene, said polytetrafluoroethylene being present in an amount of from about 0.6% to 25% by weight; and dispersed in said resins, (C) carbon black in an amount effective to enhance the electric conductivity of said material and (D) a lubricating oil in an amount effective to enhance the lubricating characteristics of said material.
Claim 21
Dependent Claim
22 words
A conductive and sliding resin material according to claim 18, wherein the amount of carbon black is up to 10% by weight.
Claim 22
Dependent Claim
24 words
A conductive and sliding resin material according to claim 18, wherein said carbon black particles consists of ultra-fine particles 10Å or less in size.
Claim 23
Dependent Claim
16 words
A conductive and sliding resin material according to claim 18, wherein said fluorine plastic is polytetrafluoroethylene.
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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) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |