Patent US3586397A successfully refreshed from Google Patents.
US3586397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bearings
Assignee: Aerostatic Ltd
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Filing: 1969-11-05
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Granted: 1971-06-22
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Expires: 1989-11-05
Abstract
Abstract A fluid bearing device comprises a stator having a cylindrical bore and an annular rotor which is disposed in an axially intermediate position along said bore, the stator and the rotor together defining a flow path for fluid through the device, the rotor being supported in the stator by fluid journal bearing means which are disposed wholly radially outwardly of the flow path through the device, the journal bearing means consisting of two distinct fluid bearings which are spaced axially of the rotor.
Inventors
- 👤 Colin W Dee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:28
CPC Classifications
G; G01; G01F; G01F15/00; F; F16; F16C; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614; F16C32/0625
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A fluid bearing device comprising a stator having a cylindrical bore, an annular rotor disposed in said stator at a position which is axially intermediate the ends of said bore, said stator and said rotor together defining a flow path for fluid through the device, said rotor being supported in said stator by two distinct fluid journal bearings spaced axially of the rotor and disposed wholly radially outwardly of said fluid flow path through the device.
Claim 2
Dependent Claim
76 words
A fluid bearing device comprising a stator having a cylindrical bore, an annular rotor disposed in said stator at a position which is axially intermediate the ends of said bore, said stator and said rotor together defining a flow path for fluid through the device, said rotor being supported in said stator by two distinct fluid journal bearings spaced axially of the rotor and disposed wholly radially outwardly of said fluid flow path through the device.
Claim 3
Dependent Claim
27 words
A fluid bearing device, as claimed in claim 1, wherein said two distinct fluid journal bearings are disposed respectively one at each axial extremity of said rotor.
Claim 4
Dependent Claim
31 words
A fluid bearing device, as claimed in claim 1, wherein said two distinct fluid journal bearings are disposed symmetrically one at each side of the median radial plane of said rotor.
Claim 5
Dependent Claim
25 words
A fluid bearing device, as claimed in claim 1, wherein the length-to-diameter radio of each of said fluid journal bearings is not greater than 0.1.
Claim 6
Dependent Claim
34 words
A fluid bearing device, as claimed in claim 1, wherein said rotor has an external surface disposed axially between said two distinct fluid journal bearings and of lesser radius than said fluid journal bearings.
Claim 7
Dependent Claim
36 words
A fluid bearing device, as claimed in claim 1, wherein said stator and said rotor define two fluid axial-thrust bearing gaps each of which communicates with a respective one of said two distinct fluid journal bearings.
Claim 8
Dependent Claim
52 words
A fluid bearing device, as claimed in claim 1, wherein said rotor comprises an annular body and two annular shoulders which project axially and radially from said annular body, said shoulders each having a bearing surface serving to define with said stator a respective one of said two distinct fluid journal bearings.
Claim 9
Dependent Claim
30 words
A fluid bearing device, as claimed in claim 1, comprising means carried by said rotor and projecting into said path to coact with said flow of fluid through the device.
Claim 10
Dependent Claim
16 words
A fluid bearing device, as claimed in claim 1, comprising magnetic means carried by said rotor.
Claim 11
Dependent Claim
28 words
A fluid bearing device, as claimed in claim 1, wherein said rotor comprises an internal surface of less radius than the radius of said bore of said stator.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |