US3822686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto ignition system
Assignee: Individual
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Filing: 1972-07-24
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Granted: 1974-07-09
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Expires: 1992-07-24
Abstract
Abstract Automotive distributor apparatus for replacing the standard mechanical breaker points and including a molded plastic rotor cap adapted to fit onto a rotor cap plate in the same manner as a standard rotor cap and having a skirt portion with molded-in, circumferentially arranged metallic teeth. A coil pair is placed on the stator support plate in a preformed locator hole. The coils of the pair are radially spaced so that the rotor cap skirt extends into the air gap therebetween. An output circuit for receiving the timing pulses generated by rotation of the cap between the coils is also disclosed.
Inventors
- 👤 M Gallo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:40
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/067; F02P7/0677
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
283 words
An improvement to automotive ignition systems of the type including a distributor having a stator and a rotor assembly including a shaft rotatable relative to said stator according to the engine speed, and a mounting plate disposed ajdacent an end of the shaft and in a plane perpendicular to the longitudinal axis of the shaft, the plate having at least a pair of prelocated fastener holes therein for receiving in secured relationship a standard rotor cap, said improvement comprising: a cup-shaped, plastic replacement rotor cap adapted for mounting in a predetermined position on said plate to be rotated therewith; said cap comprising a flat, circular end portion adapted to mate flush against the plate, and a cylindrical skirt portion integral with the end portion and coaxial with said shaft when mounted on the plate, a pair of prelocated mounting holes in the end portion and adapted to register with the prelocated fastener holes in the plate to receive fastener means for securing the replacement rotor cap to the plate in a predetermined angular relationship with the shaft, and an interrupter including a plurality of metallic teeth molded into said skirt in a uniformly spaced, circumferential pattern; and a pair of inductively linked coils disposed in a predetermined position on said stator in radially spaced relation to define an air gap; said skirt portion and said interrupter being disposed for rotation with the shaft and plate through said air gap such that said teeth modulate the inductive link between said coils to produce ignition timing signals at a rate related to engine speed and at times determined by the positions of said cap relative to said shaft and said coils relative to said stator.
Claim 2
Dependent Claim
283 words
An improvement to automotive ignition systems of the type including a distributor having a stator and a rotor assembly including a shaft rotatable relative to said stator according to the engine speed, and a mounting plate disposed ajdacent an end of the shaft and in a plane perpendicular to the longitudinal axis of the shaft, the plate having at least a pair of prelocated fastener holes therein for receiving in secured relationship a standard rotor cap, said improvement comprising: a cup-shaped, plastic replacement rotor cap adapted for mounting in a predetermined position on said plate to be rotated therewith; said cap comprising a flat, circular end portion adapted to mate flush against the plate, and a cylindrical skirt portion integral with the end portion and coaxial with said shaft when mounted on the plate, a pair of prelocated mounting holes in the end portion and adapted to register with the prelocated fastener holes in the plate to receive fastener means for securing the replacement rotor cap to the plate in a predetermined angular relationship with the shaft, and an interrupter including a plurality of metallic teeth molded into said skirt in a uniformly spaced, circumferential pattern; and a pair of inductively linked coils disposed in a predetermined position on said stator in radially spaced relation to define an air gap; said skirt portion and said interrupter being disposed for rotation with the shaft and plate through said air gap such that said teeth modulate the inductive link between said coils to produce ignition timing signals at a rate related to engine speed and at times determined by the positions of said cap relative to said shaft and said coils relative to said stator.
Claim 3
Dependent Claim
30 words
Apparatus as defined in claim 1 further including circuit means connected to at least one of said coils to receive said timing signals for producing ignition pulses in response thereto.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |