US3863737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil supplying apparatus for stern tube bearing
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1973-05-14
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Granted: 1975-02-04
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Expires: 1993-05-14
Abstract
Abstract A stern tube bearing assembly is disclosed having means for flowing a lubricating fluid from the fore end of the assembly to a reservoir at the aft end thereof before returning along the inside of the bearing for discharge from the fore end of the bearing than the fore side, providing oil grooves to an after side oil reservoir for firstly feeding the oil to the after side.
Inventors
- 👤 Minoru Kakihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:08
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; B; B63; B63H; B63H23/00; B63H23/32; B63H23/321; F16C2326/00; F16C2326/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A lubricated stern tube bearing assembly, comprising: a bearing, a stern tube surrounding said bearing, a shaft extending through said stern tube and rotatably mounted in said bearing, sealing means associated with said shaft at opposite end of said stern tube for cooperating with said bearing and stern tube to define a fore lubricant reservoir at one end of said bearing and an aft lubricant reservoir at the other end of said bearing, passage means for flowing lubricant through said tube and along said bearing and to the aft reservoir from a location adjacent said fore reservoir, a plurality of peripherally-spaced lubricant grooves extending longitudinally in said assembly between said bearing and said tube for providing fluid communication between said reservoirs, said bearing having a plurality of apertures providing fluid communication between said lubricant grooves and said shaft, and means providing a lubricant outlet from said fore reservoir, whereby lubricant supplied to the aft reservoir returns through the grooves to the fore reservoir while lubricating and cooling the bearing.
Claim 2
Dependent Claim
169 words
A lubricated stern tube bearing assembly, comprising: a bearing, a stern tube surrounding said bearing, a shaft extending through said stern tube and rotatably mounted in said bearing, sealing means associated with said shaft at opposite end of said stern tube for cooperating with said bearing and stern tube to define a fore lubricant reservoir at one end of said bearing and an aft lubricant reservoir at the other end of said bearing, passage means for flowing lubricant through said tube and along said bearing and to the aft reservoir from a location adjacent said fore reservoir, a plurality of peripherally-spaced lubricant grooves extending longitudinally in said assembly between said bearing and said tube for providing fluid communication between said reservoirs, said bearing having a plurality of apertures providing fluid communication between said lubricant grooves and said shaft, and means providing a lubricant outlet from said fore reservoir, whereby lubricant supplied to the aft reservoir returns through the grooves to the fore reservoir while lubricating and cooling 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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |