US3766418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet dynamoelectric machine flux path assembly
Assignee: Ford Motor Co
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Filing: 1972-11-15
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Granted: 1973-10-16
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Expires: 1992-11-15
Abstract
Abstract A flux path assembly for association with the plastic housing of a dynamoelectric machine using externally situated permanent magnets is disclosed. The assembly is comprised of at least two flux path members arranged in surrounding relationship with respect to the permanent magnets and the housing and which are retained in position by the cooperative association of at least two spring clip members and at least two inwardly projecting tabs arranged to engage with spaces provided therefor on the surface of the plastic housing. The spring clip member is provided with serrations or teeth arranged along convergent facing edges to engage outwardly projecting tabs on the flux path members and is provided with an inwardly projecting deformable segment to prevent overstressing of the plastic housing.
Inventors
- 👤 T Apostoleris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:04
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/04; H02K1/00; H02K1/06; H02K1/12; H02K1/17
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A dynamoelectric machine flux path assembly for cooperative association with a plurality of permanent magnets and the exterior of a cup shaped housing comprising: at least two generally arcuate shaped ferromagnetic flux path members having inner surfaces facing the housing and portions of said surfaces adapted for intimate contact with the permanent magnets, said flux path members having facing end portions with outwardly projecting tab means extending therefrom; and at least two spring clip members each interconnecting adjacent tab means of two flux path members operative to resiliently bias the facing ends of said flux path members together and cooperative with the housing to compressively confine the permanent magnets between the housing and said flux path members.
Claim 2
Dependent Claim
117 words
A dynamoelectric machine flux path assembly for cooperative association with a plurality of permanent magnets and the exterior of a cup shaped housing comprising: at least two generally arcuate shaped ferromagnetic flux path members having inner surfaces facing the housing and portions of said surfaces adapted for intimate contact with the permanent magnets, said flux path members having facing end portions with outwardly projecting tab means extending therefrom; and at least two spring clip members each interconnecting adjacent tab means of two flux path members operative to resiliently bias the facing ends of said flux path members together and cooperative with the housing to compressively confine the permanent magnets between the housing and said flux path members.
Claim 3
Dependent Claim
69 words
The assembly of claim 1 wherein the housing includes a plurality of outwardly facing longitudinal rib portions, at least two of which are discontinuous, the discontinuities being located intermediate the ends thereof and each of said flux path members further includes at least one inwardly projecting tab means operative to be received by the discontinuities to establish a longitudinal position of said flux path members relative to the housing.
Claim 4
Dependent Claim
24 words
The assembly of claim 2 wherein said flux path members comprise unitary ferromagnetic members having the inwardly and outwardly projecting tab means formed therein.
Claim 5
Dependent Claim
54 words
The assembly of claim 1 wherein each of said clip members comprises a unitary resilient portion having a pair of facing C-shaped segments and an interconnecting segment, the generally longitudinal free edges of each of the C-shaped segments being provided with facing serrations operative to engage said flux path member outwardly projecting tab means.
Claim 6
Dependent Claim
18 words
The assembly of claim 4 wherein said interconnecting segment comprises a resiliently deformable inwardly projecting generally U-shaped segment.
Claim 7
Dependent Claim
15 words
The assembly of claim 4 wherein the free edges of the clip member are nonparallel.
Claim 8
Dependent Claim
18 words
The assembly of claim 6 wherein the free edges are arranged to longitudinally converge away from the housing.
Claim 9
Dependent Claim
27 words
The assembly of claim 7 wherein the facing serrations are each provided with a taper which is longitudinally convergent in the same direction as the free edges.
Claim 10
Dependent Claim
31 words
The assembly of claim 8 wherein said interconnecting segment comprises a resiliently deformable inwardly directed generally U-shaped segment, said U-shaped segment being deformable without altering the confronting relationship of the serrations.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |