US3620581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous hydrostatic bearing
Assignee: United States Department of the Air Force
•
Filing: 1970-10-12
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Granted: 1971-11-16
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Expires: 1990-10-12
Abstract
Abstract A porous hydrostatic bearing having self-lubricating bearing pads mounted in a plurality of adjustably mounted bearing shoes. The use of such a bearing in conjunction with the gas source taking the form of the system working medium allows for the use of this bearing in a cryogenic atmosphere.
Inventors
- 👤 Stanley Heller
- 👤 Wilbur Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:45
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614; F16C32/0618; F16C32/0662; F16C32/0666
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
A porous hydrostatic bearing adapted to be used with a shaft of predetermined diameter comprising a housing, a plurality of bearing shoes adjustably mounted within said housing, a porous bearing pad mounted within each of said shoes and a means for introducing a gas to said bearing pads whereby a small film thickness is produced between the shaft and said bearing pads.
Claim 2
Dependent Claim
62 words
A porous hydrostatic bearing adapted to be used with a shaft of predetermined diameter comprising a housing, a plurality of bearing shoes adjustably mounted within said housing, a porous bearing pad mounted within each of said shoes and a means for introducing a gas to said bearing pads whereby a small film thickness is produced between the shaft and said bearing pads.
Claim 3
Dependent Claim
15 words
A porous hydrostatic bearing as defined in claim 1 wherein said bearing pads are self-lubricating.
Claim 4
Dependent Claim
35 words
A porous hydrostatic bearing as defined in claim 2 wherein each of said bearing pads has a plurality of axial holes therein and means connecting each of said axial holes to said gas introducing means.
Claim 5
Dependent Claim
18 words
A porous hydrostatic bearing as defined in claim 3 wherein the ends of said bearing pads are sealed.
Claim 6
Dependent Claim
18 words
A porous hydrostatic bearing as defined in claim 4 wherein the ends of said axial holes are covered.
Claim 7
Dependent Claim
30 words
A porous hydrostatic bearing as defined in claim 5 wherein said gas introducing means is a hollow adjusting screw for adjustably mounting each of said bearing shoes to said housing.
Claim 8
Dependent Claim
26 words
A porous hydrostatic bearing as defined in claim 6 wherein said gas takes the form of the working medium of the system associated with said shaft.
Claim 9
Dependent Claim
19 words
A porous hydrostatic bearing as defined in claim 7 wherein each of said bearing pads is made oF graphitar.
Claim 10
Dependent Claim
14 words
A porous hydrostatic bearing as defined in claim 8 wherein said gas is nitrogen.
Claim 11
Dependent Claim
14 words
A porous hydrostatic bearing as defined in claim 8 wherein said gas is argon.
References Cited (Backward Citations)
US2645534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |