Patent US3598456A successfully refreshed from Google Patents.
US3598456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically supported rotor in a conduit
Assignee: Halliburton Co
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Filing: 1970-01-23
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Granted: 1971-08-10
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Expires: 1990-01-23
Abstract
Abstract An elongated magnetic rotor member supported by a magnetic bearing assembly in a conduit, the rotor having opposite ends with substantially conical tips which are supported by a magnetic field associated with the ends of the rotor and with spaced magnetic stator members. Each stator member includes a generally cup-shaped jewel that may be radially adjustable with respect to the longitudinal axis of the stator member. Each jewel provides a potential bearing surface for one of the rotor tips. The magnetic fields are longitudinally oriented, and are of such polarity that the tips of the rotor are drawn, in opposite directions, toward an adjacent jewel. The cup shape of the jewels provides lateral support for the rotor tip and aids in the centering thereof.
Inventors
- 👤 Robert G Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:01
CPC Classifications
F; F16; F16C; F16C39/00; F16C39/06; F16C39/063
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
A device comprising: a conduit; a rotor positioned within said conduit, having a magnetic axle having two ends of opposite polarity, and a plurality of rotor blades extending radically therefrom; a first combination jewel and magnetic bearing means for supporting one end of said rotor axle within said conduit, said jewel means presenting a first potential bearing surface facing said one end of said axle, and said magnetic means inducing a first generally longitudinally oriented magnetic field to attract said one end of said axle toward said first potential bearing surface; and a second combination jewel and magnetic bearing means for supporting the other end of said rotor axis within said conduit, said jewel means presenting a second potential bearing surface facing said other end of said axle, and said magnetic means inducing a second generally longitudinally oriented magnetic field to attract said other end of said axle toward saId second potential bearing surface, whereby said rotor may be supported within said conduit for rotation with a minimum amount of bearing frictional drag.
Claim 2
Independent Claim
173 words
A device comprising: a conduit; a rotor positioned within said conduit, having a magnetic axle having two ends of opposite polarity, and a plurality of rotor blades extending radically therefrom; a first combination jewel and magnetic bearing means for supporting one end of said rotor axle within said conduit, said jewel means presenting a first potential bearing surface facing said one end of said axle, and said magnetic means inducing a first generally longitudinally oriented magnetic field to attract said one end of said axle toward said first potential bearing surface; and a second combination jewel and magnetic bearing means for supporting the other end of said rotor axis within said conduit, said jewel means presenting a second potential bearing surface facing said other end of said axle, and said magnetic means inducing a second generally longitudinally oriented magnetic field to attract said other end of said axle toward saId second potential bearing surface, whereby said rotor may be supported within said conduit for rotation with a minimum amount of bearing frictional drag.
Claim 3
Dependent Claim
54 words
A device as defined in claim 1 wherein: said first and second combination jewels and magnetic bearing means is supported by a first and second stator vane assembly, each assembly having a web portion for carrying said bearing means, radially extending arms, and a ring for engagement with the inner surface of said conduit.
Claim 4
Dependent Claim
30 words
A device as defined in claim 1 wherein said first and second combination magnetic and jewel bearing means each comprises: a permanent magnet, and a jewel bearing axially aligned therewith.
Claim 5
Dependent Claim
24 words
A device as defined in claim 3 and further comprising: adjustment means for radially and axially adjusting said jewel with respect to said magnet.
References Cited (Backward Citations)
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |