Patent US3830552A successfully refreshed from Google Patents.
US3830552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Journal bearings
Assignee: National Aeronautics and Space Administration
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Filing: 1973-03-30
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Granted: 1974-08-20
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Expires: 1993-03-30
Abstract
Abstract A plurality of bearing sectors are mounted in a housing. Each sector functions as a lobed area in the bearing to obtain the required lubricant film geometry.
Inventors
- 👤 F Schuller
- 👤 W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/108; F16C17/00; F16C17/02; F16C17/028; F16C17/03; F16C17/035; F16C33/1075; F16C33/109; F16C2210/00; F16C2210/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
In combination with a lightly loaded shaft rotating at high speed having a film of lubricants thereon, an improved bearing comprising a stationary housing having a bore extending therethrough from oppositely disposed ends thereof for receiving said shaft, said bore having a substantially cylindrical surface, a cylinder of substantially rigid bearing material inserted in said bore, said cylinder having an inside diameter concentric with said bore and an outside diameter substantially equal to the diameter of said bore prior to the insertion of said cylinder into said bore, and a plurality of spaced shims in said bore between said cylinder and said housing, said shims being rigidly secured to said oppositely disposed ends of said housing to prevent movement thereof as said cylinder is inserted in said bore by subcooling the cylinder or heating the housing, said shims serving to deform said cylinder by maintaining selected portions of the outer surface of said cylinder out of engagement with said bore while other portions of said outer surface of said cylinder engage said bore thereby forming lobes for shaping the geometry of said film.
Claim 2
Dependent Claim
183 words
In combination with a lightly loaded shaft rotating at high speed having a film of lubricants thereon, an improved bearing comprising a stationary housing having a bore extending therethrough from oppositely disposed ends thereof for receiving said shaft, said bore having a substantially cylindrical surface, a cylinder of substantially rigid bearing material inserted in said bore, said cylinder having an inside diameter concentric with said bore and an outside diameter substantially equal to the diameter of said bore prior to the insertion of said cylinder into said bore, and a plurality of spaced shims in said bore between said cylinder and said housing, said shims being rigidly secured to said oppositely disposed ends of said housing to prevent movement thereof as said cylinder is inserted in said bore by subcooling the cylinder or heating the housing, said shims serving to deform said cylinder by maintaining selected portions of the outer surface of said cylinder out of engagement with said bore while other portions of said outer surface of said cylinder engage said bore thereby forming lobes for shaping the geometry of said film.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |