Patent US3650580A successfully refreshed from Google Patents.
US3650580A
Expired / Lapsed
US
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Hydrostatic bearing
Assignee: KONINGS MASCHF IJZER EN METAAL
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Filing: 1970-06-10
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Granted: 1972-03-21
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Expires: 1990-06-10
Abstract
Abstract In a hydrostatic bearing comprising a bearing unit having a friction face, bearing pockets in the friction face, means for feeding pressurized liquid into the pockets and a capillary associated with each pocket to act as a hydraulic resistance: the improvement of a common feed passage for a plurality of the bearing pockets, an individual feed duct leading into each of the bearing pockets and the capillary associated with each bearing pocket is in the form of a capillary tube have two ends, one end being sealingly secured in the feed duct leading to that bearing pocket and the other end extending into the common feed passage.
Inventors
- 👤 Heinz Beisemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:57
CPC Classifications
F; F16; F16C; F16C37/00; F16C37/002; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
In a hydrostatic bearing comprising a bearing unit having a friction face, bearing pockets in the friction face, means for feeding pressurized liquid into the pockets, the improvement comprising a common feed passage for a plurality of the bearing pockets, an individual feed duct leading into each of the bearing pockets, and an elongated capillary tube associated with each of said bearing pockets, said capillary tubes each having two ends, one end being sealingly secured in the feed duct leading to that bearing pocket, and the other end extending loosely into said common feed passage for the greater part of its length, said capillary tubes each providing hydraulic resistance to flow of said liquid into their respective bearing pockets, the resistance characteristic of said capillary tubes being dependent on viscosity.
Claim 2
Dependent Claim
130 words
In a hydrostatic bearing comprising a bearing unit having a friction face, bearing pockets in the friction face, means for feeding pressurized liquid into the pockets, the improvement comprising a common feed passage for a plurality of the bearing pockets, an individual feed duct leading into each of the bearing pockets, and an elongated capillary tube associated with each of said bearing pockets, said capillary tubes each having two ends, one end being sealingly secured in the feed duct leading to that bearing pocket, and the other end extending loosely into said common feed passage for the greater part of its length, said capillary tubes each providing hydraulic resistance to flow of said liquid into their respective bearing pockets, the resistance characteristic of said capillary tubes being dependent on viscosity.
Claim 3
Dependent Claim
38 words
A hydrostatic bearing as claimed in claim 1, in which the feed ducts are arranged transversely to the common feed passage and the capillary tubes conform generally in shape to the feed duct and the common feed passage.
Claim 4
Dependent Claim
20 words
A hydrostatic bearing as claimed in claim 1, in which the capillary tubes are threadedly received in the feed ducts.
Claim 5
Dependent Claim
24 words
A hydrostatic bearing as claimed in claim 1, comprising couNterbores to the feed ducts in which the capillary tubes are welded into the counterbores.
Claim 6
Dependent Claim
24 words
A hydrostatic bearing as claimed in claim 1, comprising counterbores to the feed ducts in which the capillary tubes are brazed into the counterbores.
Claim 7
Dependent Claim
52 words
A hydrostatic bearing as claimed in claim 1, in the form of a radial bearing, in which the bearing unit has an outer face with a groove in the outer face constituting the common feed passage, and comprising a ring forming the outer surface of the bearing and closing the said groove.
Claim 8
Dependent Claim
53 words
A hydrostatic bearing as claimed in claim 1, comprising a connection for connecting the common feed passage to an external pressure source, and a further connector connected to the common feed passage for drawing off liquid fed to the common feed passage in excess of that required for feeding to the bearing pockets.
Claim 9
Dependent Claim
20 words
A hydrostatic bearing as claimed in claim 7, in which the connector and the further connector are arranged in opposition.
Claim 10
Dependent Claim
19 words
A hydrostatic bearing as claimed in claim 7, comprising cooling passages in the bearing unit for carrying pressurized fluid.
Claim 11
Dependent Claim
22 words
A hydrostatic bearing as claimed in claim 9, in which the cooling passages are connected in parallel with the common feed passage.
Claim 12
Dependent Claim
19 words
A hydrostatic bearing as claimed in claim 1, comprising a closable and externally accessible connector for each bearing pocket.
References Cited (Backward Citations)
US2049343A
Cited
US3062046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |