Patent US3723844A successfully refreshed from Google Patents.
US3723844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional voltage control for permanent magnet alternator
Assignee: Outboard Marine Corp
•
Filing: 1971-03-29
•
Granted: 1973-03-27
•
Expires: 1991-03-29
Abstract
Abstract Disclosed herein is a battery charging circuit comprising solid state means electrically connected across an alternating voltage generating means, including a triac and bi-directional breakdown means connected to the gate of the triac, and operable, in the event of generation of voltage above a predetermined level, for limiting voltage output of the voltage generating means.
Inventors
- 👤 D Cavil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:54
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/32
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
129 words
A battery chaRging circuit comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said breakdown means having a first voltage breakdown level above the maximum charging voltage for said battery and a second voltage breakdown level below said first voltage breakdown level.
Claim 2
Dependent Claim
129 words
A battery chaRging circuit comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said breakdown means having a first voltage breakdown level above the maximum charging voltage for said battery and a second voltage breakdown level below said first voltage breakdown level.
Claim 3
Dependent Claim
22 words
A battery charging circuit in accordance with claim 1 wherein said voltage generating means comprises a permanent magnet alternator including a winding.
Claim 4
Dependent Claim
157 words
A battery charging circuit comprising a permanent magnet alternator including a winding, a rectifier electrically connected across said alternator, a battery electrically connected to said alternator through said rectifier for charging of said battery through said rectifier by said alternator, a triac having a gate and first and second anodes connected across said winding, a voltage divider connected across said winding and including two resistors, and first and second zener diodes connected back-to-back in series to said gate and to said voltage divider between said resistors, said first zener diode having a first voltage breakdown level below the maximum charging voltage for said battery, whereby to provide half-wave battery regulation and, in the event of battery disconnection from said alternator, to provide voltage clipping, and said second zener diode having a second voltage breakdown level above the maximum charging voltage for said battery, whereby in the event of battery disconnection from said alternator, to provide voltage clipping.
Claim 5
Dependent Claim
157 words
A battery charging circuit comprising a permanent magnet alternator including a winding, a rectifier electrically connected across said alternator, a battery electrically connected to said alternator through said rectifier for charging of said battery through said rectifier by said alternator, a triac having a gate and first and second anodes connected across said winding, a voltage divider connected across said winding and including two resistors, and first and second zener diodes connected back-to-back in series to said gate and to said voltage divider between said resistors, said first zener diode having a first voltage breakdown level below the maximum charging voltage for said battery, whereby to provide half-wave battery regulation and, in the event of battery disconnection from said alternator, to provide voltage clipping, and said second zener diode having a second voltage breakdown level above the maximum charging voltage for said battery, whereby in the event of battery disconnection from said alternator, to provide voltage clipping.
Claim 6
Dependent Claim
131 words
A battery charging device comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said two-way voltage breakdown means having a first voltage breakdown level below the maximum charging voltage for said battery and a second voltage breakdown level above said first voltage breakdown level.
Claim 7
Dependent Claim
131 words
A battery charging device comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said two-way voltage breakdown means having a first voltage breakdown level below the maximum charging voltage for said battery and a second voltage breakdown level above said first voltage breakdown level.
Claim 8
Dependent Claim
70 words
A battery charging circuit in accordance with claim 1 wherein said voltage generating means includes a winding with opposite ends and wherein said switch comprises a triac having a gate and first and second anodes connected across said voltage generating means, and said voltage breakdown means comprises a diac including a first anode connected to one of said ends of said winding and a second anode connected to said gate.
Claim 9
Dependent Claim
24 words
A battery charging device in accordance with claim 5 including a resistor connected across said voltage generating means in parallel relation to said triac.
Claim 10
Dependent Claim
68 words
A battery charging circuit in accordance with claim 1 wherein said voltage generating means includes a winding with opposite ends and wherein said switch comprises a triac having a gate, and first and second anodes connected across said voltage generating means, and said voltage breakdown means comprises first and second zener diodes connected back-to-back in series to one of said ends of said winding and to said gate.
Claim 11
Dependent Claim
40 words
A battery charging device in accordance with claim 7 including a voltage divider connected across said voltage generating means and including two resistors and wherein said series connected back-to-back zener diodes are connected to said voltage divider between said resistors.
Claim 12
Dependent Claim
173 words
A battery charging circuit comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said breakdown means having a first voltage breakdown level below the maximum charging voltage for said battery, whereby to provide half-wave battery regulation and, in the event of battery disconnection from said voltage generating means to provide voltage clipping, and said breakdown means having a second voltage breakdown level above the maximum charging voltage for said battery, whereby in the event of battery disconnection from said voltage generating means, to provide voltage clipping.
Claim 13
Dependent Claim
173 words
A battery charging circuit comprising means for generating alternate voltage, a rectifier electrically connected across said voltage generating means, a battery electrically connected to said voltage generator means through said rectifier for charging of said battery through said rectifier by said voltage generating means, a two-way solid state switch connected across said voltage generating means and including a control terminal, and a two-way solid state voltage breakdown means operably connected to said voltage generating means and to said control terminal of said solid state switch to cause, upon breakdown of said voltage breakdown means, conduction of said solid state switch, said breakdown means having a first voltage breakdown level below the maximum charging voltage for said battery, whereby to provide half-wave battery regulation and, in the event of battery disconnection from said voltage generating means to provide voltage clipping, and said breakdown means having a second voltage breakdown level above the maximum charging voltage for said battery, whereby in the event of battery disconnection from said voltage generating means, to provide voltage clipping.
Claim 14
Dependent Claim
22 words
A battery charging circuit in accordance with claim 9 wherein said voltage generating means comprises a permanent magnet alternator including a winding.
Claim 15
Dependent Claim
70 words
A battery charging circuit in accordance with claim 9 wherein said voltage generating means includes a winding with opposite ends and wherein said switch comprises a triac having a gate and first and second anodes connected across said voltage generating means, and said voltage breakdown means comprises a diac including a first anode connected to one of said ends of said winding and a second anode connected to said gate.
Claim 16
Dependent Claim
68 words
A battery charging circuit in accordance with claim 9 wherein said voltage generating means includes a winding with opposite ends and wherein said switch comprises a triac having a gate, and first and second anodes connected across said voltage generating means, and said voltage breakdown means comprises first and second zener diodes connected back-to-back in series to one of said ends of said winding and to said gate.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |