US3612948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical pulse triggered systems
Assignee: Brunswick Corp
•
Filing: 1969-10-09
•
Granted: 1971-10-12
•
Expires: 1989-10-09
Abstract
Abstract This disclosure relates to a capacitor discharge ignition system for an internal combustion engine employing alternately fired controlled rectifiers for discharging of a capacitor to the engine sparkplugs. The opposite ends of a single winding are connected respectively to the gates of the controlled rectifiers. A pair of permanent magnets are sequentially coupled to the winding with successive magnets being oppositely polarized to generate time-spaced alternating current signals in the winding. The signals are alternately of opposite polarity sequence and automatically apply the proper polarity signal to the gates in alternate sequence.
Inventors
- 👤 Floyd M Minks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:05
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
233 words
An ignition system for the energizing of an engine firing means of an internal combustion engine comprising an energy source connection means, a pickup means, a pair of separate exciting means physically mounted in spaced relation to each other by a distance such that with one exciting means aligned with the pickup means the other is spaced therefrom, means to establish relative movement between said pickup means and said exciting means with said pickup means thereby sequentially and periodically coupled to each of said spaced exciting means in time-spaced relation to sequentially induce correspondingly time-spaced alternating current signals separated by essentially zero current periods, each of said signals including a pair of opposite polarity pulses and successive time-spaced signals having pulses of opposite polarity sequence in said pickup means, and a switching circuit having a pair of polarity sensitive control means controlling the connection of the energy source connection means to said firing means to supply energy source connection means to said firing means to supply energy to said firing means and being connected to said pickup means and including a phase inversion means to operatively energize both of said polarity sensitive means in response to each of said alternating current signals with the first of said control means supplying the energy to said firing means whereby firing is established only in response to an alternating current signal having a predetermined polarity sequence.
Claim 2
Dependent Claim
233 words
An ignition system for the energizing of an engine firing means of an internal combustion engine comprising an energy source connection means, a pickup means, a pair of separate exciting means physically mounted in spaced relation to each other by a distance such that with one exciting means aligned with the pickup means the other is spaced therefrom, means to establish relative movement between said pickup means and said exciting means with said pickup means thereby sequentially and periodically coupled to each of said spaced exciting means in time-spaced relation to sequentially induce correspondingly time-spaced alternating current signals separated by essentially zero current periods, each of said signals including a pair of opposite polarity pulses and successive time-spaced signals having pulses of opposite polarity sequence in said pickup means, and a switching circuit having a pair of polarity sensitive control means controlling the connection of the energy source connection means to said firing means to supply energy source connection means to said firing means to supply energy to said firing means and being connected to said pickup means and including a phase inversion means to operatively energize both of said polarity sensitive means in response to each of said alternating current signals with the first of said control means supplying the energy to said firing means whereby firing is established only in response to an alternating current signal having a predetermined polarity sequence.
Claim 3
Dependent Claim
34 words
The ignition system of claim 1 wherein said exciting means establishes a signal in the pickup means which reverses with a reversal in the relative movement of the exciting means and the pickup means.
Claim 4
Dependent Claim
39 words
The ignition system of claim 1 wherein said pair of exciting means induces an alternating current signal consisting of only a first polaritY pulse and a following opposite polarity pulse in response to each coupling to said pickup means.
Claim 5
Dependent Claim
37 words
The ignition system of claim 1 wherein said exciting means establishes an alternating current signal in said pickup means having a leading and trailing pulse of the same polarity and an intermediate pulse of an opposite polarity.
Claim 6
Dependent Claim
24 words
The ignition system of claim 4 wherein said leading and trailing pulses are of a substantially lesser peak voltage amplitude than said intermediate pulse.
Claim 7
Dependent Claim
20 words
The ignition system of claim 4 wherein said phase sensitive control means respond to the leading portion of the signal.
Claim 8
Dependent Claim
39 words
The ignition system of claim 1 wherein said exciting means establishes successive oppositely phased alternating signal portion in said pickup means including similar relatively low amplitude leading and trailing pulse portions with intermediate relatively high amplitude intermediate pulse portions.
Claim 9
Dependent Claim
49 words
The ignition system of claim 1 wherein said pair of exciting means is a pair of magnetic members of opposite polarity and said common pickup means is a winding having the opposite ends thereof connected to said polarity sensitive control means and said winding constituting said phase inversion means.
Claim 10
Dependent Claim
32 words
The ignition system of claim 1 wherein said exciting means are connected in spaced relation to a common support movably mounted adjacent the pickup means to periodically and cyclically establish said signals.
Claim 11
Dependent Claim
66 words
The ignition system of claim 1 wherein said exciting means are mounted in immediately adjacent relation upon a common support and moved relative to the exciting means whereby the exciting means and pickup means are coupled with each exciting means producing a corresponding effect during the corresponding leading and trailing portion of the movement past the pickup means and a superimposed effect during the intermediate period.
Claim 12
Dependent Claim
119 words
The ignition system of claim 1 wherein each of said exciting means are oppositely polarized magnetic units and said pickup means is a center-tapped winding wound on a core mounted with the respective magnetic units establishing oppositely directed flux therethrough and thereby generating a single cycle alternating current signal consisting of a first portion of one polarity and a second portion of an opposite polarity, the reverse polarity sequence being established by the second magnetic unit, a pair of similar polarity-sensitive switch means each having a pair of input elements, and means connecting one-half of the winding to said one pair of input elements and connecting the opposite half of the winding to the second pair of input elements.
Claim 13
Dependent Claim
109 words
The ignition system of claim 1 wherein said pickup means is a winding, said exciting means including at least one pair of magnetic elements mounted in adjacent relation for movement past the winding, a pair of similar polarity-sensitive switch means each having a pair of input elements, means connecting the opposite ends of said winding to a corresponding first input element of the switch means and to the second input element in series with an impedance element, said first switch means being connected in a circuit between said firing means and source, and said second switch means being connected in a circuit between said source and a dummy load.
Claim 14
Dependent Claim
59 words
The ignition system of claim 1, wherein said exciting means and pickup means includes a rotor and a stator and each signal includes in succession a first polarity portion, a second opposite portion and a third polarity portion corresponding to the first polarity portion and reversing in polarity sequence in response to reversing of the movement of said rotor.
Claim 15
Dependent Claim
53 words
The ignition system of claim 13, wherein said rotor includes a plurality of similar magnetic units, each of which includes a pair of adjacent oppositely polarized magnets sequentially impressed upon said pickup means for generating said opposite polarity signals in response to opposite movement of the exciting means relative to said pickup means.
Claim 16
Dependent Claim
164 words
A capaCitor discharge ignition system having a pair of alternately energized polarity-sensitive switch means for discharging of a main capacitor, the firing of one switch means to conduct rapidly discharging said capacitor and effectively disabling the operation of the other switch means, a common pickup means coupled to the switch means, and oppositely polarized exciting means mounted and correspondingly moved relative to said common pickup means with the pickup means aligned with said exciting means and then spaced from all of said exciting means to induce time-spaced alternating current pulses in said common pickup means with essentially zero current and voltage between pulses and the successive pulses being of opposite phase polarity sequences in response to a change in the direction of movement of the pickup means relative to said exciting means and establishing pulses in said pickup means so as to fire said switch means from said common pickup means, each pulse including alternate half cycles of opposite polarity and said capacitor being
Claim 17
Dependent Claim
164 words
A capaCitor discharge ignition system having a pair of alternately energized polarity-sensitive switch means for discharging of a main capacitor, the firing of one switch means to conduct rapidly discharging said capacitor and effectively disabling the operation of the other switch means, a common pickup means coupled to the switch means, and oppositely polarized exciting means mounted and correspondingly moved relative to said common pickup means with the pickup means aligned with said exciting means and then spaced from all of said exciting means to induce time-spaced alternating current pulses in said common pickup means with essentially zero current and voltage between pulses and the successive pulses being of opposite phase polarity sequences in response to a change in the direction of movement of the pickup means relative to said exciting means and establishing pulses in said pickup means so as to fire said switch means from said common pickup means, each pulse including alternate half cycles of opposite polarity and said capacitor being
Claim 18
Dependent Claim
50 words
The capacitor discharge ignition system of claim 15, wherein output means are connected to a common trigger capacitor, and the firing of one switch means transfers the energy from said trigger capacitor during the periods of a trigger pulse and thereby effectively disables the operation of the other switch means.
Claim 19
Dependent Claim
54 words
The capacitor discharge ignition system of claim 16, wherein said switch means are gate-controlled rectifiers and connected in series with the corresponding output means to define a discharge circuit connected across said trigger capacitor, said discharge circuit having a time constant no greater than one-half cycle of an alternating current pulse of said train.
Claim 20
Dependent Claim
45 words
The capacitor discharge ignition system of claim 15, wherein said pickup means includes a winding having the opposite ends connected one to each of said switch means and a return circuit means whereby the corresponding half cycles of each pulse energizes the corresponding switch means.
Claim 21
Dependent Claim
44 words
The capacitor discharge ignition system of claim 15, wherein said pickup means includes a winding having the opposite ends connected one to each of said switch means, and a common return connection between said switch means and an intermediate turn of said winding means.
Claim 22
Dependent Claim
112 words
The capacitor discharge ignition system of claim 15, wherein said switch means are triggered switches having gate means for controlling conduction and connected in series with the corresponding output means to define a discharge circuit connected across said trigger capacitor, said discharge circuit having a discharge time no greater than one-half cycle of said alternating current pulse, said pickup means including a winding having one end connected to the gate means of the one triggered switch and the opposite end connected to the gate means of the second triggered switch, and diode means connected across each of the gate means and polarized to bypass the one-half cycle from the corresponding triggered switch.
Claim 23
Dependent Claim
67 words
The pulsed electrical system of claim 20, wherein said diode means includes a first diode connected across the gate means of the first switch and polarized to conduct the half cycle of each pulse which triggers the second switch, and a second diode connected across the gate means of the second switch and polarized to conduct the half cycle of each pulse which triggers the first switch.
Claim 24
Dependent Claim
92 words
The capacitor discharge ignition system of claim 15 including an alternator driven from a two-cylinder alternate firing engine having a flywheel, said exciting means including a pair of permanent magnets mounted in diametrically opposed portions of said flywheel, said magnets being oppositely polarized, and said pickup means including a winding means disposed adjacent to the path of said magnets and coupled to the field of the passing magnets such that each magnet establishes a polarized unidirectional magnetic field through said winding means to fire the cylinders in proper sequence without a disTributor.
Claim 25
Dependent Claim
31 words
The capacitor discharge ignition system of claim 22, wherein said winding means is adjustably mounted for selective movement about the flywheel for adjusting the timing of the generation of said pulses.
References Cited (Backward Citations)
US3219877A
Cited
US3253168A
Cited
US3299874A
Cited
US3495579A
Cited
US3496920A
Cited
US3498281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |