US4592782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter incorporating polyether ether ketone
Assignee: AE PLC
•
Filing: 1984-03-12
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Granted: 1986-06-03
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Expires: 2004-03-12
Abstract
Abstract A plain bearing comprising a steel backing, a sintered bronze interlayer and a lining of a material consisting of polyether ether ketone, polytetrafluoroethylene, graphite and bronze.
Inventors
- 👤 Glyndwr J. Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C08L71/00; Y; Y10; Y10S; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
45 words
A bearing material comprising: 60 to 90% by weight of a polyether ketone having a melting temperature in excess of 330° C. and having physically intermixed therein between 10 and 40% by weight of a low friction, self-lubricating phase comprising polytetrafluoroethylene (PTFE), graphite and bronze.
Claim 2
Dependent Claim
45 words
A bearing material comprising: 60 to 90% by weight of a polyether ketone having a melting temperature in excess of 330° C. and having physically intermixed therein between 10 and 40% by weight of a low friction, self-lubricating phase comprising polytetrafluoroethylene (PTFE), graphite and bronze.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein said polyether ketone is polyetheretherketone (PEEK).
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said bronze is a tin bronze.
Claim 5
Dependent Claim
17 words
The composition of claim 2 wherein said PEEK represents 70% to 85% of said composition by weight.
Claim 6
Dependent Claim
17 words
The composition of claim 2 wherein the weight ratios of graphite, PTFE, and bronze are 1:3:4 respectively.
Claim 7
Dependent Claim
18 words
A bearing material composition of matter comprising 2.5% graphite, 7.5% PTFE, 10% bronze and 80% PEEK by weight.
Claim 8
Dependent Claim
18 words
A bearing material composition of matter comprising 2.5% graphite, 7.5% PTFE, 10% bronze and 80% PEEK by weight.
References Cited (Backward Citations)
US4000982A
Cited
US4064097A
Cited
US4367189A
Cited
US4294712A
Cited
US4408007A
Cited
US4380523A
Cited
US4429078A
Cited
GB2108983A
Cited
US4421588A
Cited
US4465799A
Cited
GB2123430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |