US3687510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivoted pad journal bearing
Assignee: Westinghouse Electric Corp
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Filing: 1970-11-12
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Granted: 1972-08-29
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Expires: 1990-11-12
Abstract
Abstract A journal bearing for severe loads is provided with pivoted load pads in the lower half and a viscosity pump in the upper half to provide a cooling fluid. The upper half may have a fixed sleeve type surface or may also comprise pivoted pads. The design provides dynamic stability and also overcomes temperature limitations of previous pad bearing designs.
Inventors
- 👤 Glenn D Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:35
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/02; F16C17/03; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C37/00; F16C37/002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A journal bearing comprising: a shell; a plurality of pivoted bearing pads supported within said shell and each having a bearing surface facing the center of said shell, said plurality of pads including at least two lower pads located in the lower half of said shell, said lower pads each comprising a first portion adjacent said shell and a second portion adjacent said bearing surface and supported on said first portion, said second portion having higher thermal conductivity than said first portion; and means to circulate a coolant from an external supply through interior channels in said lower pads which bring said coolant into contact with said second portions thereof; said means to circulate a coolant comprising a coolant supply channel within said shell and an inlet port to the interior of said shell located in the upper half of said shell and an adjacent bearing surface is set back with respect to the location of said lower pad bearing surface to permit coolant flow to said lower pads.
Claim 2
Dependent Claim
169 words
A journal bearing comprising: a shell; a plurality of pivoted bearing pads supported within said shell and each having a bearing surface facing the center of said shell, said plurality of pads including at least two lower pads located in the lower half of said shell, said lower pads each comprising a first portion adjacent said shell and a second portion adjacent said bearing surface and supported on said first portion, said second portion having higher thermal conductivity than said first portion; and means to circulate a coolant from an external supply through interior channels in said lower pads which bring said coolant into contact with said second portions thereof; said means to circulate a coolant comprising a coolant supply channel within said shell and an inlet port to the interior of said shell located in the upper half of said shell and an adjacent bearing surface is set back with respect to the location of said lower pad bearing surface to permit coolant flow to said lower pads.
Claim 3
Dependent Claim
27 words
The subject matter of claim 1 wherein: said coolant is a lubricant that also flows from said inlet port to form a film on said bearing surfaces.
Claim 4
Dependent Claim
60 words
The subject matter of claim 1 wherein: said plurality of pivoted bearing pads also includes at least two upper padS located in the upper half of said shell consisting essentially of a single portion of steel; and said first portion of said lower pads consists essentially of steel and said second portions of said lower pads consists essentially of copper.
Claim 5
Dependent Claim
22 words
The subject matter of claim 1 wherein: the upper half of said shell has on its interior a fixed sleeve bearing portion.
Claim 6
Dependent Claim
155 words
Rotation apparatus comprising: a shaft, a journal bearing supporting and permitting rotation of said shaft; said shaft producing a total load on said bearing in excess of 50,000 pounds; said shaft having a diameter of at least 17 inches and a maximum speed of rotation of at least 3,600 rpm; said bearing characterized by having a plurality of pivoted pads in its lower half with surface portions of higher thermal conductivity than lower support portions thereof and channels between said portions substantially parallel to the bearing surfaces and an upper half of a fixed sleeve portion relieved from any substantial contact with said shaft and having a groove for coolant flow from an inlet port in said upper half of said channels in said pivoted pads and out through a discharge port; and means for the forced circulation of a coolant fluid through said channels from a supply external to the bearing without direct recirculation.
Claim 7
Dependent Claim
155 words
Rotation apparatus comprising: a shaft, a journal bearing supporting and permitting rotation of said shaft; said shaft producing a total load on said bearing in excess of 50,000 pounds; said shaft having a diameter of at least 17 inches and a maximum speed of rotation of at least 3,600 rpm; said bearing characterized by having a plurality of pivoted pads in its lower half with surface portions of higher thermal conductivity than lower support portions thereof and channels between said portions substantially parallel to the bearing surfaces and an upper half of a fixed sleeve portion relieved from any substantial contact with said shaft and having a groove for coolant flow from an inlet port in said upper half of said channels in said pivoted pads and out through a discharge port; and means for the forced circulation of a coolant fluid through said channels from a supply external to the bearing without direct recirculation.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |