US4390804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneto generator for ignition systems
Assignee: Robert Bosch GmbH
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Filing: 1981-06-19
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Granted: 1983-06-28
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Expires: 2001-06-19
Abstract
Abstract A magneto generator includes a magnet wheel 11 which carries a magnetic system. The magnetic system consists of a plurality of claw shaped pole pieces (12,13) which form extensions of two pole plates (14,15). A plate shaped permanent magnet 16 is positioned between the pole plates in a direction perpendicular to the pole wheel axis. The pole pieces arranged along the periphery of the magnet wheel are extensions of two pole plates each of which abuts one of the pole faces of the plate shaped permanent magnet. At least one of the pole plates has an extension which compensates for the unbalance of weight caused by the pole piece extensions.
Inventors
- 👤 Josef Orova
- 👤 Herbert Roderer
- 👤 Hans D. Schmid
- 👤 Horst-G. Steffen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
F; F02; F02N; F02N1/00; F02N1/02; F02P; F02P1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
Magneto generator for an ignition system comprising a rotating magnet wheel (10); a plate shaped permanent magnet (16, 31) embedded in said magnet wheel, said permanent magnet having a first and second pole face at opposite axial sides thereof; a first and second pole plate (14, 15; 32, 33) respectively abutting said first and second pole face and located at respective first and second axial positions of said magnet wheel, each of said first and second pole plate having a radially extending portion and an axially extending claw shaped pole shoe (12, 13; 34, 35) located at the periphery of the wheel, said pole shoes being located circumferentially adjacent each other, projecting axially across said permanent magnet and spanning a minor portion of the circumference of said magnet wheel; and at least one of said pole plates having a weight compensating extension (17, 37) in the region of the magnet wheel radially opposite said pole shoes.
Claim 2
Dependent Claim
156 words
Magneto generator for an ignition system comprising a rotating magnet wheel (10); a plate shaped permanent magnet (16, 31) embedded in said magnet wheel, said permanent magnet having a first and second pole face at opposite axial sides thereof; a first and second pole plate (14, 15; 32, 33) respectively abutting said first and second pole face and located at respective first and second axial positions of said magnet wheel, each of said first and second pole plate having a radially extending portion and an axially extending claw shaped pole shoe (12, 13; 34, 35) located at the periphery of the wheel, said pole shoes being located circumferentially adjacent each other, projecting axially across said permanent magnet and spanning a minor portion of the circumference of said magnet wheel; and at least one of said pole plates having a weight compensating extension (17, 37) in the region of the magnet wheel radially opposite said pole shoes.
Claim 3
Dependent Claim
37 words
Magneto generator as set forth in claim 1, wherein said permanent magnet is a ring magnet (16) arranged around the axis of said magnet wheel, and has circular pole faces each abutting one of said pole plates.
Claim 4
Dependent Claim
49 words
Magneto generator as set forth in claim 1, wherein one of said pole plates (32, 33) has a segmental shape; said permanent magnet (31) has a segmental shape; and wherein said one of said pole plates and said permanent magnet are fastened to the other of said pole plates.
Claim 5
Dependent Claim
28 words
Magneto generator as set forth in claim 1, wherein said weight compensating extension includes an end portion having at least one bend to form an axially positioned portion.
Claim 6
Dependent Claim
47 words
Magneto generator as set forth in claim 4, wherein one of the pole plates is formed with said weight compensating extension; and wherein a hub for said magnet wheel is provided integrally formed on said pole plate having the bent end portion on said weight compensating extension.
Claim 7
Dependent Claim
53 words
Magneto generator as set forth in claim 1, wherein said permanent magnet is a ring magnet (16) arranged around the axis of said magnet wheel, and has circular pole faces each abutting one of said pole plates; and wherein each one of said pole plates is formed with a weight compensating extension (17).
Claim 8
Dependent Claim
27 words
Magneto generator as set forth in claim 6, wherein the weight compensating extensions (17) have a circumferential extent similar to that of the pole shoes (12, 13).
Claim 9
Dependent Claim
29 words
Magneto generator as set forth in claim 1, wherein the at least one weight compensating extension extends circumferentially similarly to the circumferential extent of the pole shoes (12, 13).
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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |