US4111499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing assembly and liner
Assignee: MADELEINE AS SCIL AGENT LLC
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Filing: 1976-12-02
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Granted: 1978-09-05
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Expires: 1996-12-02
Abstract
Abstract A bearing liner adapted for extreme temperature applications comprising polybutadiene resin matrix having included therein a random dispersion of polytetrafluoroethylene particles, the resin matrix adhered to a backing material.
Inventors
- 👤 Albert R. McCloskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:27
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C33/28; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/909
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
A bearing liner adapted for extreme temperature applications comprising a resin matrix selected from the group consisting of a polyimide resin matrix and a polybutadiene resin matrix having included therein a random dispersion of polytetrafluorethylene particles, said resin matrix adhered to a backing material, thereby providing a bearing liner having an extensive operating temperature range.
Claim 2
Dependent Claim
55 words
A bearing liner adapted for extreme temperature applications comprising a resin matrix selected from the group consisting of a polyimide resin matrix and a polybutadiene resin matrix having included therein a random dispersion of polytetrafluorethylene particles, said resin matrix adhered to a backing material, thereby providing a bearing liner having an extensive operating temperature range.
Claim 3
Dependent Claim
22 words
A bearing liner adapted for extreme temperature applications in accordance with claim 1 wherein said resin matrix is a polybutadiene resin matrix.
Claim 4
Dependent Claim
29 words
A bearing liner adapted for extreme temperature applications in accordance with claim 2 wherein said polybutadiene resin matrix is mixed with an equal amount of polytetrafluoroethylene particles by volume.
Claim 5
Dependent Claim
38 words
A bearing liner adapted for extreme temperature applications in accordance with claim 3 wherein said backing material is a member selected from a class consisting of plastic, fiber glass, fine wire mesh or a high temperature nylon-like material.
Claim 6
Dependent Claim
22 words
A bearing liner adapted for extreme temperature applications in accordance with claim 1 wherein said resin matrix is a polyimide resin matrix.
Claim 7
Dependent Claim
29 words
A bearing liner adapted for extreme temperature applications in accordance with claim 5 wherein said polyimide resin matrix is mixed with an equal amount of polytetrafluoroethylene particles by volume.
Claim 8
Dependent Claim
24 words
A bearing liner adapted for extreme temperature applications in accordance with claim 6 wherein said polyimide resin matrix is blended with a polyamide resin.
Claim 9
Dependent Claim
35 words
A bearing liner adapted for extreme temperature applications in accordance with claim 7 wherein the said polyimide is blended with said polyamide at a ratio of 98 percent polyimide to 2 percent polyamide by volume.
Claim 10
Dependent Claim
54 words
A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polybutadiene resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.
Claim 11
Dependent Claim
54 words
A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polybutadiene resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.
Claim 12
Dependent Claim
54 words
A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polyimide resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.
Claim 13
Dependent Claim
54 words
A spherical bearing assembly comprising an outer member having a concave inner surface and an inner member having a convex outer surface and generally complementary to said inner surface, a bearing liner affixed to one of said surfaces, said bearing liner comprising polyimide resin matrix having included therein a random dispersion of polytetrafluoroethylene particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |