Patent US3878415A successfully refreshed from Google Patents.
US3878415A
Expired / Lapsed
US
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Winding for rotary electrical device and method of making
Assignee: DYNA CORP
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Filing: 1973-07-19
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Granted: 1975-04-15
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Expires: 1993-07-19
Abstract
Abstract A rotary electrical device, such as a motor, has an iron member with a circular array of axial slots to receive a winding. The winding is applied in the form of identical coil means distributed about the array of slots with each coil means overlapping the coil means at each side thereof. Each coil means may comprise two or more consecutively wound identical coils each displaced one slot from the others. A terminal is taken from each end of each coil means. The number of slots in the array of slots is so selected that every slot has a single coil side only therein.
Inventors
- 👤 Adolph J Wesolowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:58
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A polyphase winding for rotary electrical apparatus having a soft iron member with axial slots distributed circumferentially about said member; said winding comprising a plurality of coil means with coil sides in said slots and coil ends extending between said coil sides, each coil means having terminals at the opposite ends, each coil means overlapping the coil means next adjacent thereto on each side, and each slot of said member having a single coil side only therein, the number of slots in the member being a whole number times the product of the number of magnetic poles of the apparatus and the number of phases.
Claim 2
Dependent Claim
105 words
A polyphase winding for rotary electrical apparatus having a soft iron member with axial slots distributed circumferentially about said member; said winding comprising a plurality of coil means with coil sides in said slots and coil ends extending between said coil sides, each coil means having terminals at the opposite ends, each coil means overlapping the coil means next adjacent thereto on each side, and each slot of said member having a single coil side only therein, the number of slots in the member being a whole number times the product of the number of magnetic poles of the apparatus and the number of phases.
Claim 3
Dependent Claim
67 words
A polyphase winding according to claim 1 in which said winding is a three phase winding and the number of slots in the member is three times the product of the number of magnetic poles of the apparatus and the number of coils in each coil means, each coil means comprising a plurality of coils all of the same size and offset one slot from one another.
Claim 4
Dependent Claim
39 words
A polyphase winding according to claim 1 in which said rotary electrical apparatus is a three phase-four pole machine and said coil means comprises six coil means in uniformly distributed relation in the slots of the said iron member.
Claim 5
Dependent Claim
110 words
A polyphase winding according to claim 1 in which said rotary electrical apparatus is a three phase-four pole machine, said coil means consisting of six coil means in uniformly distributed relation in the slots of the said iron member each coil means comprising two coils, and said iron member having 24 slots therein, the coil sides of one coil of a respective coil means being disposed in a pair of spaced slots and with the coil sides of the other coil of the said respective coil means being disposed in the slots which are next adjacent said pair of slots progressing in the same direction about the array of slots.
Claim 6
Dependent Claim
53 words
A polyphase winding according to claim 1 in which said rotary electrical apparatus is a three phase-four pole machine, said coil means consisting of six coil means in uniformly distributed relation in the slots of the said iron member each coil means comprising three coils, and said iron member having 36 slots therein.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |