Patent US4472650A successfully refreshed from Google Patents.
US4472650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor of high-speed electric machine
Assignee: Individual
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Filing: 1980-06-26
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Granted: 1984-09-18
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Expires: 2000-06-26
Abstract
Abstract A rotor of a high-speed electric machine comprises a shaft 1, a magnetic ring 2 enclosing the shaft 1, a retaining ring 3, and permanent magnets 6 sisposed between the retaining ring 3 and the magnetic ring 2. The retaining ring 3 is secured to the shaft 1 by couplers, and a clearance 7 is provided between the permanent magnets 6 attached to the inside surface 5 of the retaining ring 3 and the magnetic ring 2.
Inventors
- 👤 Nikolai P. Advolotkin
- 👤 Nikolai I. Lebedev
- 👤 Igor E. Ovchinnikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A rotor of a high-speed electric machine, comprising: a shaft, a magnetic ring enclosing said shaft, a retaining ring embracing said magnetic ring within its inside surface, couplers connecting said retaining ring to said shaft, and permanent magnets secured to said retaining ring and positioned in the space defined by said retaining ring and said magnetic ring with a clearance from said magnetic ring, wherein said couplers connecting said retaining ring to said shaft are made in the form of separate radially elastic ribs with a boss.
Claim 2
Dependent Claim
87 words
A rotor of a high-speed electric machine, comprising: a shaft, a magnetic ring enclosing said shaft, a retaining ring embracing said magnetic ring within its inside surface, couplers connecting said retaining ring to said shaft, and permanent magnets secured to said retaining ring and positioned in the space defined by said retaining ring and said magnetic ring with a clearance from said magnetic ring, wherein said couplers connecting said retaining ring to said shaft are made in the form of separate radially elastic ribs with a boss.
Claim 3
Dependent Claim
109 words
A rotor of a high-speed electric machine, comprising: a shaft, a magnetic ring enclosing said shaft, a retaining ring embracing said magnetic ring within its inside surface, couplers connecting said retaining ring to said shaft, and permanent magnets secured to said retaining ring and positioned in the space defined by said retaining ring and said magnetic ring with a clearance from said magnetic ring, wherein said magnetic ring and said permanent magnets are made from individual sections spaced apart along the length of the rotor, and wherein said couplers connecting said retaining ring to said shaft are made in the form of separate radially elastic ribs with a boss.
Claim 4
Dependent Claim
109 words
A rotor of a high-speed electric machine, comprising: a shaft, a magnetic ring enclosing said shaft, a retaining ring embracing said magnetic ring within its inside surface, couplers connecting said retaining ring to said shaft, and permanent magnets secured to said retaining ring and positioned in the space defined by said retaining ring and said magnetic ring with a clearance from said magnetic ring, wherein said magnetic ring and said permanent magnets are made from individual sections spaced apart along the length of the rotor, and wherein said couplers connecting said retaining ring to said shaft are made in the form of separate radially elastic ribs with a boss.
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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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |