US3861370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breakerless distributor and ignition system utilizing same
Assignee: Individual
•
Filing: 1973-03-30
•
Granted: 1975-01-21
•
Expires: 1993-03-30
Abstract
Abstract An ignition system comprising at least one magnet and an electronic switch arranged so that the strength of the magnetic field at the electronic switch varies. The electronic switch is responsive to the magnetic field being of a first strength level for placing the electronic switch in a conductive state and responsive to the magnetic field being of a second strength level for placing the electronic switch in a nonconductive state. An ignition circuit is responsive to the state of the electronic switch for providing ignition sparks for the engine.
Inventors
- 👤 Homer E Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:06
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/067; F02P7/07; F02P7/0675
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
183 words
A breakerless distributor connectible to a source of electrical energy and to an ignition system for an engine comprising: at least one magnet, said magnet providing a magnetic field; rotatable means for varying the strength of the magnetic field at a predetermined location; first and second conductors, said first conductor being couplable to the source of electrical energy; a Hall generator coupled across said conductors and including means responsive to the strength of the magnetic field at said predetermined location for providing an analog signal, a characteristic of which is related to the strength of said magnetic field at said predetermined location; first means coupled across said conductors and responsive to the analog signal for providing a square wave signal which is related to said analog signal; second means for applying the square wave signal to the ignition system with the square wave signal providing timing signals for the ignition system; a Zener diode coupled across said conductors for use in limiting the voltage across said conductors; and a diode coupled between the second conductor and ground to provide protection against reverse voltages.
Claim 2
Dependent Claim
183 words
A breakerless distributor connectible to a source of electrical energy and to an ignition system for an engine comprising: at least one magnet, said magnet providing a magnetic field; rotatable means for varying the strength of the magnetic field at a predetermined location; first and second conductors, said first conductor being couplable to the source of electrical energy; a Hall generator coupled across said conductors and including means responsive to the strength of the magnetic field at said predetermined location for providing an analog signal, a characteristic of which is related to the strength of said magnetic field at said predetermined location; first means coupled across said conductors and responsive to the analog signal for providing a square wave signal which is related to said analog signal; second means for applying the square wave signal to the ignition system with the square wave signal providing timing signals for the ignition system; a Zener diode coupled across said conductors for use in limiting the voltage across said conductors; and a diode coupled between the second conductor and ground to provide protection against reverse voltages.
Claim 3
Dependent Claim
73 words
A breakerless distributor as defined in claim 1 wherein said square wave signal is a first square wave signal, said first means includes a Schmitt trigger coupled across said conductors and to said Hall generator for providing a second square wave signal and a transistor coupled across said conductors and to said Schmitt trigger, said second square wave signal controlling said transistor to cause said transistor to provide said first square wave signal.
Claim 4
Dependent Claim
26 words
A breakerless distributor as defined in claim 2 including a capacitor coupled across said conductors for protecting said first and second means against short duration transients.
Claim 5
Dependent Claim
24 words
A breakerless distributor as defined in claim 3 wherein said rotatable means includes a rotatable shield interposed between the magnet and said predetermined location.
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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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |