US3873168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated composite article with improved bearing portion
Assignee: General Electric Co
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Filing: 1972-12-18
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Granted: 1975-03-25
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Expires: 1992-12-18
Abstract
Abstract A composite article having a body of at least one layer of glass fibers includes a pair of opposed outer bearing portions connected with the body, at least one outer bearing portion including ingredients of graphite, carbon or their mixtures, such as in fiber form, to provide improved bearing characteristics. The article is bonded together through a polymer resin. In one form, the article includes a low coefficient of friction material at least as a coating on the bearing portion, especially for very thin, lightweight bearing designs.
Inventors
- 👤 Olivo L Viola
- 👤 Wilbert H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:18
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; F16C17/00; F16C17/10; B29L; B29L2031/00; B29L2031/04; B29L2031/045; F16C2202/00; F16C2202/50; F16C2202/54; F16C2208/00; F16C2208/02; F16C2208/20; F16C2208/40; F16C2208/80; F16C2208/86; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/938; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24273; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
An improved laminated composite annular spacer article for use between two opposed cooperating bearing surfaces, at least one of which is movable in respect to the other and including improved opposed bearing portions, the article comprising: an annular body of at least one layer of glass fibers; and a pair of annular outer bearing portions each having an outer bearing surface, each of the pair of bearing portions connected with the body in opposed relationship, at least one of the pair of bearing portions comprising therethrough ingredients selected from the group consisting of graphite, carbon and their mixtures, the body and the bearing portions each impregnated with and bonded together through a resin selected from the group of resins consisting of epoxy and polyimide-type resins.
Claim 2
Dependent Claim
125 words
An improved laminated composite annular spacer article for use between two opposed cooperating bearing surfaces, at least one of which is movable in respect to the other and including improved opposed bearing portions, the article comprising: an annular body of at least one layer of glass fibers; and a pair of annular outer bearing portions each having an outer bearing surface, each of the pair of bearing portions connected with the body in opposed relationship, at least one of the pair of bearing portions comprising therethrough ingredients selected from the group consisting of graphite, carbon and their mixtures, the body and the bearing portions each impregnated with and bonded together through a resin selected from the group of resins consisting of epoxy and polyimide-type resins.
Claim 3
Dependent Claim
22 words
The article of claim 1 in which the ingredients are in the form of fibers oriented substantially parallel to the bearing surface.
Claim 4
Dependent Claim
16 words
The article of claim 1 in which the outer layer bearing portions are of graphite fibers.
Claim 5
Dependent Claim
13 words
The article of claim 3 in which the polymer resin is a polyimide.
Claim 6
Dependent Claim
41 words
The article of claim 1 which includes an additional low coefficient of friction material at least on the bearing outer surface, the low coefficient of friction material being selected from the group consisting of MoS2, WS2, mica, BN and their mixtures.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |