Patent US5159019A successfully refreshed from Google Patents.
US5159019A
Expired / Lapsed
US
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Sliding material composition
Assignee: Daikin Industries Ltd
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Filing: 1991-06-05
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Granted: 1992-10-27
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Expires: 2011-06-05
Abstract
Abstract A sliding material composition comprising (a) 100 parts by weight of polyphenylene sulfide and (b) 5 to 100 parts by weight of a resin mixture of 10 to 90% by weight of a melt processable fluorine-containing resin and 90 to 10% by weight of polytetrafluoroethylene, which has good abrasion resistance and lubricating properties without the deterioration of impact strength.
Inventors
- 👤 Yoshihisa Yamamoto
- 👤 Tuyoshi Miyamori
- 👤 Kazuo Ishiwari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:07
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02; C08L27/00; C08L27/02; C08L27/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A sliding material composition comprising (a) 100 parts by weight of polyphenylene sulfide (b) 5 to 100 parts by weight of a resin mixture of 10 to 90% by weight of a melt processable fluorine-containing resin and 90 to 10% by weight of polytetrafluoroethylene.
Claim 2
Dependent Claim
44 words
A sliding material composition comprising (a) 100 parts by weight of polyphenylene sulfide (b) 5 to 100 parts by weight of a resin mixture of 10 to 90% by weight of a melt processable fluorine-containing resin and 90 to 10% by weight of polytetrafluoroethylene.
Claim 3
Dependent Claim
37 words
The sliding material composition according to claim 1, wherein said melt processable fluorine-containing resin is selected from the group consisting of tetrafluoroethylene/perfluoroalkyl vinyl ether copolymers, tetrafluoroethylene/hexafluoropropylene copolymers, tetrafluoroethylene/hexafluoropropylene/perfluoroalkyl vinyl ether copolymers, ethylene/tetrafluoroethylene copolymers, polyvinylidene fluoride and polychlorotrifluoroethylene.
Claim 4
Dependent Claim
24 words
The sliding material composition according to claim 1, wherein polytetrafluoroethylene is a powder having an average particle size of not larger than 30 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) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |