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Patent US3774983A successfully refreshed from Google Patents.
US3774983A
Expired / Lapsed
US
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Low friction bearing-journal arrangement
Assignee: United States Department of the Navy
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Filing: 1971-12-27
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Granted: 1973-11-27
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Expires: 1991-12-27
Abstract
Abstract A new type of bearing-journal arrangement, which can operate with water as the lubricant or in a dry environment, displaying a kinetic coefficient of friction in the wet or dry state of less than 0.2, showing no sign of vibrational motion and being capable of bearing a low load of 100-1,000 psi.
Inventors
- 👤 P Lagally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:32
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C17/00; F16C17/12; F16C17/14; F16C2202/00; F16C2202/02; F16C2208/00; F16C2208/20; F16C2208/76; F16C2208/78; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912; Y10T; Y10T428/00; Y10T428/21; Y10T428/213; Y10T428/24; Y10T428/24025; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A low friction bearing-journal arrangement which consists essentially of: a first member formed from a high density polyethylene having a melt index from about 5.0 to about 6.0, a molecular weight of about 80,000 to about 90,000, and a density of about 0.95 gr/cm3; and a second member, which mates with said first member, formed from a high modulus supporting material selected from the group consisting of titanium, zirconium, alloys of such metals, monels, bronzes and ceramics.
Claim 2
Dependent Claim
77 words
A low friction bearing-journal arrangement which consists essentially of: a first member formed from a high density polyethylene having a melt index from about 5.0 to about 6.0, a molecular weight of about 80,000 to about 90,000, and a density of about 0.95 gr/cm3; and a second member, which mates with said first member, formed from a high modulus supporting material selected from the group consisting of titanium, zirconium, alloys of such metals, monels, bronzes and ceramics.
References Cited (Backward Citations)
US2246042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |