US4114057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine with inner and outer stators
Assignee: Individual
•
Filing: 1976-12-06
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Granted: 1978-09-12
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Expires: 1996-12-06
Abstract
Abstract A dynamoelectric machine having coaxial inner and outer stators and, preferably, also end stators, each stator being provided with a plurality of magnetic flux producing magnets, preferably of the permanent magnet type. The rotor has a hollow cylindrical configuration and is rotatably disposed such as to form a plurality of magnetic gaps between the inner stator, outer stator and end stators and a plurality of magnetic cores supported by the rotor and provided with appropriate windings, the stator magnetic cores having projections interreacting with corresponding magnets forming the stators.
Inventors
- 👤 Ernie B. Esters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:34
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/04; H02K25/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
In a dynamoelectric machine having an inner stator comprising a plurality of magnets, an outer stator comprising a plurality of magnets, a pair of end stators comprising a plurality of magnets and a rotor mounted for rotation between said stators, said rotor comprising a first plurality of flat longitudinally elongated substantially rectangular radially disposed thin magnetic cores having electrical windings wound longitudinally therearound and a second plurality of flat longitudinally elongated substantially rectangular radially oriented thin magnetic cores disposed each between consecutive wound magnetic cores, the improvement comprising each of said magnetic cores having at least at an end thereof a first extension integral with said rectangular plate projecting radially toward said outer stator and a plurality of magnets in said outer stator disposed such as to form a radially magnetic gap with said first core extension.
Claim 2
Dependent Claim
137 words
In a dynamoelectric machine having an inner stator comprising a plurality of magnets, an outer stator comprising a plurality of magnets, a pair of end stators comprising a plurality of magnets and a rotor mounted for rotation between said stators, said rotor comprising a first plurality of flat longitudinally elongated substantially rectangular radially disposed thin magnetic cores having electrical windings wound longitudinally therearound and a second plurality of flat longitudinally elongated substantially rectangular radially oriented thin magnetic cores disposed each between consecutive wound magnetic cores, the improvement comprising each of said magnetic cores having at least at an end thereof a first extension integral with said rectangular plate projecting radially toward said outer stator and a plurality of magnets in said outer stator disposed such as to form a radially magnetic gap with said first core extension.
Claim 3
Dependent Claim
33 words
The improvement of claim 1 further comprising a plurality of magnets in at least one of said end stators disposed such as to form an axial magnetic gap with said first core extension.
Claim 4
Dependent Claim
43 words
The improvement of claim 1 further comprising said first core extension at each end of said magnetic cores and a plurality of magnets in each of said end stators disposed such as to form an axial magnetic gap with said first core extension.
Claim 5
Dependent Claim
55 words
The improvement of claim 1 further comprising a second integral magnetic core extension projecting radially toward said inner stator at at least one end of said magnetic core and a plurality of magnets in at least one of said end stators disposed such as to form an axial magnetic gap with said second core extension.
Claim 6
Dependent Claim
51 words
The improvement of claim 1 further comprising a second integral magnetic core extension projecting radially toward said inner stator on each end of said magnetic core and a plurality of magnets in each of said end stators disposed such as to form an axial magnetic gap with said second core extension.
Claim 7
Dependent Claim
40 words
The improvement of claim 4 further comprising a hub member for rotatably supporting said rotor, said hub member having a radial slot corresponding to each of said second core extension for fitting of said second core extension in said slot.
Claim 8
Dependent Claim
18 words
The improvement of claim 6 further comprising a rotatable shaft having an end affixed to said hub member.
Claim 9
Dependent Claim
46 words
The improvement of claim 5 further comprising a pair of hub members for rotatably supporting said rotor, each of said hub members having a radial slot corresponding to each of said second core extensions for fitting of each of said second core extensions in said slot.
Claim 10
Dependent Claim
20 words
The improvement of claim 8 further comprising a rotatable shaft having an end affixed to one of said hub members.
Claim 11
Dependent Claim
17 words
The improvement of claim 9 further comprising commutator means affixed to the other of said hub members.
Claim 12
Dependent Claim
11 words
The improvement of claim 1 wherein said magnets are permanent magnets.
Claim 13
Dependent Claim
11 words
The improvement of claim 2 wherein said magnets are permanent magnets.
Claim 14
Dependent Claim
11 words
The improvement of claim 3 wherein said magnets are permanent magnets.
Claim 15
Dependent Claim
11 words
The improvement of claim 4 wherein said magnets are permanent magnets.
Claim 16
Dependent Claim
11 words
The improvement of claim 5 wherein said magnets are permanent magnets.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |