Patent US3112140A successfully refreshed from Google Patents.
US3112140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bearings
Assignee: Boeing Co
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Filing: 1962-02-26
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Granted: 1963-11-26
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Clarence R Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:21
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; F16C32/0659
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PRESSURIZED FLUID BEARING FOR SUPPORTING RADIAL LOADS COMPRISING A CYLINDRICAL SHAFT, A CYLINDRICAL BEARING HAVING A SURFACE DISPOSED AROUND SAID SHAFT TO DEFINE A FLUID PASSAGEWAY HAVING AN ENTRANCE, A FIRST PORTION OF SAID FLUID PASSAGEWAY ADJACENT SAID ENTRANCE HAVING A SUBSTANTIALLY CONSTANT THICKNESS BETWEEN 0.0002 INCH AND 0.0025 INCH, A SECOND PORTION OF SAID PASSAGEWAY HAVING A SUBSTANTIALLY CONSTANT THICKNESS BETWEEN 0.0001 INCH AND 0.002 INCH, AND MEANS FOR SUPPLYING FLUID TO SAID PASSAGEWAY SO THAT SAID FLUID ENTERS THE FIRST PORTION OF SAID PASSAGEWAY UNDER A SUBSTANTIALLY CONSTANT PRESSURE AROUND THE ENTIRE PERIMETER OF SAID ENTRANCE, WHEREBY THE FLUID FLOWS THROUGH THE PASSAGEWAY TO CAUSE FLUID PRESSURE DIFFERENTIALS IN THE FIRST AND SECOND PORTIONS TO PROVIDE A SEPARATING FORCE BETWEEN THE SHAFT AND THE BEARING.
Claim 2
Dependent Claim
128 words
A PRESSURIZED FLUID BEARING FOR SUPPORTING RADIAL LOADS COMPRISING A CYLINDRICAL SHAFT, A CYLINDRICAL BEARING HAVING A SURFACE DISPOSED AROUND SAID SHAFT TO DEFINE A FLUID PASSAGEWAY HAVING AN ENTRANCE, A FIRST PORTION OF SAID FLUID PASSAGEWAY ADJACENT SAID ENTRANCE HAVING A SUBSTANTIALLY CONSTANT THICKNESS BETWEEN 0.0002 INCH AND 0.0025 INCH, A SECOND PORTION OF SAID PASSAGEWAY HAVING A SUBSTANTIALLY CONSTANT THICKNESS BETWEEN 0.0001 INCH AND 0.002 INCH, AND MEANS FOR SUPPLYING FLUID TO SAID PASSAGEWAY SO THAT SAID FLUID ENTERS THE FIRST PORTION OF SAID PASSAGEWAY UNDER A SUBSTANTIALLY CONSTANT PRESSURE AROUND THE ENTIRE PERIMETER OF SAID ENTRANCE, WHEREBY THE FLUID FLOWS THROUGH THE PASSAGEWAY TO CAUSE FLUID PRESSURE DIFFERENTIALS IN THE FIRST AND SECOND PORTIONS TO PROVIDE A SEPARATING FORCE BETWEEN THE SHAFT AND THE BEARING.
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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |