US4029981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating rectifier assembly for electric machines
Assignee: Kraftwerk Union AG
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Filing: 1975-07-10
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Granted: 1977-06-14
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Expires: 1995-07-10
Abstract
Abstract Rotating rectifier assembly in a multiphase bridge circuit for electric machines has active components including cooling members, rectifier cells and safety fuses and also includes a carrier wheel having a radially inner hub and a radially outer annular flange, the active components being radially outwardly braced at the inner side of the annular flange, the annular flange being formed of two parts, one of the parts being a radially inner flange ring connected to the hub and formed with openings for receiving therein and for securing the active components to the annular flange, and the other of the parts being a radially outer cap ring formed of very rigid material and being in press-fitting engagement with the flange ring.
Inventors
- 👤 Heinrich Kuter
- 👤 Erich Weghaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:07
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/04; H02K11/042
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
In a multiphase bridge circuit for electric machines, a rotating rectifier assembly having active components including cooling members, rectifier cells and safety fuses, and comprising a carrier wheel having a radially inner hub and a radially outer annular flange connected to said radially inner hub, the active components being radially outwardly braced at the inner side of said annular flange, said annular flange being formed of two parts, one of said parts being a radially inner flange ring of unitary construction with said hub, said radially inner flange ring formed with openings and solely containing all the openings for receiving therein and for securing the active components to said annular flange, and the other of said parts being radially outer cap ring without bores or recesses formed therein and of very strong material and being in press-fitting engagement with said flange ring, said cap ring and having uniform cross-sectional area over its axial length.
Claim 2
Dependent Claim
154 words
In a multiphase bridge circuit for electric machines, a rotating rectifier assembly having active components including cooling members, rectifier cells and safety fuses, and comprising a carrier wheel having a radially inner hub and a radially outer annular flange connected to said radially inner hub, the active components being radially outwardly braced at the inner side of said annular flange, said annular flange being formed of two parts, one of said parts being a radially inner flange ring of unitary construction with said hub, said radially inner flange ring formed with openings and solely containing all the openings for receiving therein and for securing the active components to said annular flange, and the other of said parts being radially outer cap ring without bores or recesses formed therein and of very strong material and being in press-fitting engagement with said flange ring, said cap ring and having uniform cross-sectional area over its axial length.
Claim 3
Dependent Claim
47 words
Rotating rectifier assembly according to claim 1 wherein said cap ring is formed with a stop at one axial end thereof and has a fastening ring seated on said hub at the other axial end of said cap ring for securing said cap ring against axial displacement.
Claim 4
Dependent Claim
37 words
Rotating rectifier assembly according to claim 1 wherein said flange ring is formed with a plurality of mutually adjacent circular cross-pieces at the outer periphery thereof, said cross-pieces having press-fit surfaces press-fittingly engaged by said cap ring.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |