US3804472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Journal bearings
Assignee: National Aeronautics and Space Administration
•
Filing: 1972-03-27
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Granted: 1974-04-16
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Expires: 1992-03-27
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
2026-11-03 10:47
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; F16C17/03; F16C33/1075; F16C17/12; F16C17/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
170 words
In combination with a lightly loaded shaft rotating at high speed having a film of lubricants thereon, an improved bearing comprising a housing having a bore extending therethrough for receiving such shaft, a plurality of sectors in said bore positioned around said shaft, each of said sectors having a surface facing said shaft forming a lobed area in said bearing for shaping the geometry of said film of lubricants, said sectors being rigid whereby the spacing between said surface and said shaft is constant, said surface of each of said sectors being angularly disposed relative to said shaft with the minimum radial clearance between said surface and said shaft being at the trailing edge of each of said sectors and the maximum radial clearance being at the leading edge of each of said sectors to produce a converging film geometry, and threaded means passing through said housing into each of said sectors for drawing the same rigidly against the bore of said housing whereby individual sections can be selectively replaced.
Claim 2
Dependent Claim
170 words
In combination with a lightly loaded shaft rotating at high speed having a film of lubricants thereon, an improved bearing comprising a housing having a bore extending therethrough for receiving such shaft, a plurality of sectors in said bore positioned around said shaft, each of said sectors having a surface facing said shaft forming a lobed area in said bearing for shaping the geometry of said film of lubricants, said sectors being rigid whereby the spacing between said surface and said shaft is constant, said surface of each of said sectors being angularly disposed relative to said shaft with the minimum radial clearance between said surface and said shaft being at the trailing edge of each of said sectors and the maximum radial clearance being at the leading edge of each of said sectors to produce a converging film geometry, and threaded means passing through said housing into each of said sectors for drawing the same rigidly against the bore of said housing whereby individual sections can be selectively replaced.
Claim 3
Dependent Claim
17 words
Apparatus as claimed in claim 1 including at least three identical sectors in the bore of housing.
References Cited (Backward Citations)
US736136A
Cited
US1236511A
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US1595744A
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US2322004A
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Cited
US2280385A
Cited
US3168358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |