US3705751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical bearing
Assignee: Horstmann Gear Co Ltd
•
Filing: 1970-03-23
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Granted: 1972-12-12
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Expires: 1990-03-23
Abstract
Abstract A fluid bearing has a radially-inner bearing member and a radially outer bearing member respectively having a partspherical internal surface and a part-spherical external surface defining between them a fluid bearing gap, one of the bearing members having in it one or more rows of fluid feed slots disposed circumferentially and each opening at one end in the part-spherical surface of that bearing member, said bearing member including passage means communicating with the other end of each of the slots for supply of fluid through the slots to the bearing gap.
Inventors
- 👤 Colin W Dee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:35
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614; F16C32/0625
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
217 words
A fluid bearing comprising: a radially inner bearing member and a radially outer bearing member, said radially outer bearing member having an internal surface, said radially inner bearing member having an external surface, said internal surface and said external surface defining between them a fluid bearing gap; one of said bearing members including lands or spacers of equal angular length; at least two parallel sided fluid feed slots disposed circumferentially, each said slot having two ends, one end of each said slot opening in said surface of one bearing member, each slot being of axial depth between 70 percent and 100 percent of the radial width of the bearing gap; and each slot being defined by the formula: Alpha a dimensionless parameter between about 2 and about 8 2/k number of rows of slots y radial length of the slot l distance from the point of fluid entry into the bearing to the end of the bearing h radial width of the bearing gap z axial depth of the slot said one bearing member including passage means communicating with each slot for supply of flUid through said slot to the bearing gap and wherein said one bearing member includes two elements butted together at respective faces thereof, and wherein said slots are defined between said butted faces.
Claim 2
Dependent Claim
217 words
A fluid bearing comprising: a radially inner bearing member and a radially outer bearing member, said radially outer bearing member having an internal surface, said radially inner bearing member having an external surface, said internal surface and said external surface defining between them a fluid bearing gap; one of said bearing members including lands or spacers of equal angular length; at least two parallel sided fluid feed slots disposed circumferentially, each said slot having two ends, one end of each said slot opening in said surface of one bearing member, each slot being of axial depth between 70 percent and 100 percent of the radial width of the bearing gap; and each slot being defined by the formula: Alpha a dimensionless parameter between about 2 and about 8 2/k number of rows of slots y radial length of the slot l distance from the point of fluid entry into the bearing to the end of the bearing h radial width of the bearing gap z axial depth of the slot said one bearing member including passage means communicating with each slot for supply of flUid through said slot to the bearing gap and wherein said one bearing member includes two elements butted together at respective faces thereof, and wherein said slots are defined between said butted faces.
Claim 3
Dependent Claim
30 words
A fluid bearing, as claimed in claim 1, wherein said one bearing member includes an annular wrapper engaged with said two elements and retaining them with said faces in abutment.
Claim 4
Dependent Claim
28 words
A fluid bearing, as claimed in claim 1, wherein each slot has a median line which is radial to the axis of symmetry of said one bearing member.
Claim 5
Dependent Claim
32 words
A fluid bearing, as claimed in claim 1, wherein each slot has a median line which is tangential to a circle coaxial with the axis of symmetry of said one bearing member.
Claim 6
Dependent Claim
50 words
A fluid bearing, as claimed in claim 1, wherein said part-spherical internal surface of said radially outer bearing member, and said part-spherical external surface of said radially inner bearing member, are each respectively defined between two lesser circumferences axially spaced one at each side of a coaxial intermediate greater circumference.
Claim 7
Dependent Claim
43 words
A fluid bearing, as claimed in claim 1, wherein said part-spherical internal surface of said radially outer bearing member, and said part-spherical external surface of said radially inner bearing member, are each respectively defined between a greater circumference and a coaxial lesser circumference.
References Cited (Backward Citations)
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Cited
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US3256451A
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US3368850A
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |