US3828754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flywheel magneto ignition device with capacitor-thyristor ignition combined with generator
Assignee: Svenska Electromagneter AB
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Filing: 1972-08-30
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Granted: 1974-08-13
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Expires: 1992-08-30
Abstract
Abstract A flywheel magneto ignition device with capacitor-thyristor ignition combined with generator comprises a first component group for producing an ignition effect and a second component group for generating current for lighting and/or battery charging purposes, the first component group comprising a rotor having mounted therein permanent magnets the pole of which are arranged to coact with coils containing at least one coil core and intended for the capacitor-thyristor-ignition circuit, and the second component group comprising a system of coils provided with iron cores and fixedly mounted in a rotating magnetic field from a body corotating with the rotor in the first component group, the rotor and the corotating body being mechanically connected together but with the respective magnetic fields shielded from each other.
Inventors
- 👤 H Carlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:14
CPC Classifications
F; F02; F02P; F02P1/00; F02P1/02; F02P1/08; F02P1/086
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
A combined magneto and generator device, comprising: a. means for producing an ignition effect for connection to a thyristor-capacitor ignition circuit, said means including (1) at least one charging coil and one trigger coil each having a coil core, (2) a rotor, and (3) a number of permanent magnets mounted in said rotor, the magnetic field of which is arranged to coact with said coils; b. means for generating direct current for a connection to a lighting and/or battery charging type of circuit, said generating means including (1) a ferromagnetic casing corotatably secured to said rotor in coaxial alignment, and with said rotor and its coacting coils disposed at one side thereof, (2) permanent magnets disposed on the side of said casing opposite to said rotor, and providing a rotatable magnetic field, and (3) a system of coils having iron cores and fixedly mounted in said rotatable field; and c. said ferromagnetic casing constituting a magnetic shield between said ignition effect means and said generating means.
Claim 2
Dependent Claim
166 words
A combined magneto and generator device, comprising: a. means for producing an ignition effect for connection to a thyristor-capacitor ignition circuit, said means including (1) at least one charging coil and one trigger coil each having a coil core, (2) a rotor, and (3) a number of permanent magnets mounted in said rotor, the magnetic field of which is arranged to coact with said coils; b. means for generating direct current for a connection to a lighting and/or battery charging type of circuit, said generating means including (1) a ferromagnetic casing corotatably secured to said rotor in coaxial alignment, and with said rotor and its coacting coils disposed at one side thereof, (2) permanent magnets disposed on the side of said casing opposite to said rotor, and providing a rotatable magnetic field, and (3) a system of coils having iron cores and fixedly mounted in said rotatable field; and c. said ferromagnetic casing constituting a magnetic shield between said ignition effect means and said generating means.
Claim 3
Dependent Claim
90 words
A combined device according to claim 1 in which said first-named coil core has arms defining an E-shape, one of said first-named coils being a charging coil disposed on a first of said arms, a second of said first-named coils being an ignition coil disposed on a second of said arms which, in the direction of rotor rotation, is behind said first arm, said ignition coil having a primary winding and a secondary winding, and a third of said first-named coils being a trigger coil disposed on said second arm.
Claim 4
Dependent Claim
21 words
A combined device according to claim 2 in which said trigger coil is disposed nearer said rotor than said ignition coil.
Claim 5
Dependent Claim
75 words
A capacitor-thyristor ignition system having a combined device according to claim 2 including a capacitor, a diode, a thyristor and a spark plug connected to said secondary winding, said charging coil being connected first to charge said capacitor through said diode, said trigger coil being connected to provide a control signal at said thyristor for discharging said capacitor through said primary winding of the ignition coil for thereby creating a spark on said spark plug.
Claim 6
Dependent Claim
44 words
A system according to claim 4 in which said ignition coil, said trigger coil and a number of the electronic components in circuit therewith are cast in a block having the physical properties of thermosetting resin to comprise a compact, shock-proof and moistureproof unit.
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |