US3619634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternator and combined breakerless ignition system
Assignee: RE Phelan Co Inc
•
Filing: 1970-07-10
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Granted: 1971-11-09
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Expires: 1990-07-10
Abstract
Abstract An alternator for use with an internal combustion engine includes a rotor having a plurality of generating magnets and a stator carrying a number of coils in which voltages are induced by the movement of the generating magnets therepast. One of these coils is used to charge the capacitor of an associated capacitor discharge ignition system for the engine, and triggering of the ignition system to control the discharge of the capacitor and firing of the associated spark plug is achieved by a trigger signal producing means including a magnet separate from the generating magnets, a trigger coil, and irregularities such as pins on the rotor for varying the flux of the trigger magnet through the trigger coil in response to rotation of the rotor.
Inventors
- 👤 Bob O Burson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
F; F02; F02P; F02P1/00; F02P1/08; F02P1/086
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
338 words
In an electrical system for a spark ignition engine the combination comprising: an alternator having a stator fixed relative to the stationary structure of said engine and a rotor rotated in synchronism with the operation of said engine, said stator including a plurality of poles consisting of a first group of poles containing more than one pole and a second group of poles containing at least one additional pole, a first group of windings each of which is received on a respective one of said first group of poles, a second group of windings each of which is received solely on a respective one of said second group of poles, said rotor including a plurality of generating magnets which cooperate with said stator poles to induce voltage waveforms in said windings as said rotor rotates, a load circuit, means connecting said first group of windings to said load circuit so as to prOvide electrical power thereto, a spark gap ignition device, an electrical storage device connected with said second group of windings for storing electrical power provided by said second group of windings, means including an electronic switching device connected with said storage device for controlling the transmission of power from said storage device to said spark gap device and for causing the occurrence of a spark at said spark gap device as said switching device is switched from a first state to a second state, a triggering coil separate from said stator located adjacent said rotor and coupled with said switching device and operable to switch said switching device from said first state to said second state when the voltage across said triggering coil reaches a predetermined level, a triggering magnet separate from said generating magnets, and means providing a circuit for the magnetic flux of said triggering magnet which circuit passes through said triggering coil and has a reluctance dependent on the angular position of said rotor so that different magnitudes of voltage are induced in said triggering coil at different angular positions of said rotor.
Claim 2
Dependent Claim
338 words
In an electrical system for a spark ignition engine the combination comprising: an alternator having a stator fixed relative to the stationary structure of said engine and a rotor rotated in synchronism with the operation of said engine, said stator including a plurality of poles consisting of a first group of poles containing more than one pole and a second group of poles containing at least one additional pole, a first group of windings each of which is received on a respective one of said first group of poles, a second group of windings each of which is received solely on a respective one of said second group of poles, said rotor including a plurality of generating magnets which cooperate with said stator poles to induce voltage waveforms in said windings as said rotor rotates, a load circuit, means connecting said first group of windings to said load circuit so as to prOvide electrical power thereto, a spark gap ignition device, an electrical storage device connected with said second group of windings for storing electrical power provided by said second group of windings, means including an electronic switching device connected with said storage device for controlling the transmission of power from said storage device to said spark gap device and for causing the occurrence of a spark at said spark gap device as said switching device is switched from a first state to a second state, a triggering coil separate from said stator located adjacent said rotor and coupled with said switching device and operable to switch said switching device from said first state to said second state when the voltage across said triggering coil reaches a predetermined level, a triggering magnet separate from said generating magnets, and means providing a circuit for the magnetic flux of said triggering magnet which circuit passes through said triggering coil and has a reluctance dependent on the angular position of said rotor so that different magnitudes of voltage are induced in said triggering coil at different angular positions of said rotor.
Claim 3
Dependent Claim
15 words
The combination defined in claim 1 further characterized by said storage device being a capacitor.
Claim 4
Dependent Claim
64 words
The combination defined in claim 1 further characterized by said rotor including an outer circumferentially extending rim of magnetic material surrounding said stator and within which said generating magnets are received, said triggering coil being located adjacent the outer surface of said rim, and said magnetic flux circuit providing means for said triggering coil including an irregularity on said outer surface of said rim.
Claim 5
Dependent Claim
22 words
The combination defined in claim 3 further characterized by said irregularity comprising a protrusion extending radially outwardly from said outer rim surface.
Claim 6
Dependent Claim
20 words
The combination defined in claim 3 further characterized by said irregularity comprising a recess formed in said outer rim surface.
Claim 7
Dependent Claim
86 words
The combination defined in claim 1 further characterized by said rotor including an outer circumferentially extending rim of magnetic material surrounding said stator and within which said generating magnets are received said triggering coil being located adjacent the outer surface of said rim, and said magnetic flux circuit providing means for said triggering coil including at least two angularly spaced irregularities which are of substantially different configurations so as to induce voltage waveforms of substantially different peak magnitudes in said triggering coil as they move therepast.
Claim 8
Dependent Claim
71 words
The combination defined in claim 1 further characterized by each of said windings of said first group of windings having a low number of turns in comparison to the number of turns of each of said windings of said second group so that each of said windings of said second group has induced therein a substantially higher peak voltage than that induced in each of said windings of said first group.
Claim 9
Dependent Claim
39 words
The combination defined in claim 1 further characterized by said second group of poles being comprised of only one pole and said second group of windings being comprised of only one winding received solely on said only one pole.
Claim 10
Dependent Claim
31 words
The combination defined in claim 8 further characterized by said only one winding having a substantially larger number of turns than each of said windings of said first group of windings.
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |