Patent US3932008A successfully refreshed from Google Patents.
US3932008A
Expired / Lapsed
US
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Bearing having a self-lubricating liner and method of making
Assignee: MADELEINE AS SCIL AGENT LLC
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Filing: 1974-12-11
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Granted: 1976-01-13
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Expires: 1994-12-11
Abstract
Abstract A spherical bearing includes a bearing liner having a low-friction layer containing a resin matrix which includes therein a dispersion of self-lubricating particles. The particles include powdered or flock polytetrafluoroethylene particles and graphite fibers.
Inventors
- 👤 Albert R. McCloskey
- 👤 Gordon T. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:19
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C; C08; C08L; C08L101/00; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/938; Y10S277/944
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A spherical bearing having a low-friction bearing surface comprising: a support structure; a liner secured to said support structure; said liner including a layer to provide said bearing surface remote from said support structure, a backing material to which said layer is attached, and an adhesive means between said backing material and said support structure; said layer containing a resin matrix including therein a random dispersion of self-lubricating particles; a first of said particles being fluorocarbon; and a second of said particles being graphite fibers which are high modulus, non-circular fibers having a maximum width of about 14.0 microns and a length substantially greater than said maximum width to cause said fibers to lie in a general stacked configuration within said layer.
Claim 2
Dependent Claim
122 words
A spherical bearing having a low-friction bearing surface comprising: a support structure; a liner secured to said support structure; said liner including a layer to provide said bearing surface remote from said support structure, a backing material to which said layer is attached, and an adhesive means between said backing material and said support structure; said layer containing a resin matrix including therein a random dispersion of self-lubricating particles; a first of said particles being fluorocarbon; and a second of said particles being graphite fibers which are high modulus, non-circular fibers having a maximum width of about 14.0 microns and a length substantially greater than said maximum width to cause said fibers to lie in a general stacked configuration within said layer.
Claim 3
Dependent Claim
15 words
a bearing as set forth in claim 1 wherein said fluorocarbon particles include powdered polytetrafluoroethylene.
Claim 4
Dependent Claim
15 words
A bearing as set forth in claim 1, wherein said fluorocarbon particles including flocked polytetrafluoroethylene.
Claim 5
Dependent Claim
27 words
A bearing as set forth in claim 1, wherein said graphite fibers make up at least 2% and not more than 20% by weight of said particles.
References Cited (Backward Citations)
US3582166A
Cited
US3741855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |