Patent US3646366A successfully refreshed from Google Patents.
US3646366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for periodically reversing the polarity of a direct current potential supply line
Assignee: Motors Liquidation Co
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Filing: 1970-11-23
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Granted: 1972-02-29
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Expires: 1990-11-23
Abstract
Abstract A circuit for periodically reversing the polarity of a direct current potential supply line. An inductor element is connected in series between the positive polarity output terminal of a direct current potential source and the supply line and the anode-cathode electrodes of a silicon controlled rectifier are connected across the series combination of a capacitor which is charged to a predetermined potential magnitude of a polarity in series aiding relationship with the direct current potential source, the inductor element and the direct current potential source. When the capacitor has been charged to the predetermined potential magnitude, the silicon controlled rectifier is triggered conductive through the anode-cathode electrodes to complete a discharge circuit for the capacitor through the direct current potential source and the inductor element. The potential drop across the inductor element produced by the capacitor discharge current reverses the polarity of the supply line with respect to the negative polarity terminal of the direct current potential source.
Inventors
- 👤 James W Mcnamee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:49
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/5152; H02M7/5155
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
113 words
A circuit for periodically reversing the polarity of a direct current supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, a nonpolarized capacitor, circuit means for connecting said capacitor across said positive and negative polarity output terminals of said direct current potential source, means for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and a potential sensitive electrical switching means included in said circuit means responsive to said charge upon said capacitor reaching said predetermined potential magnitude for completing a discharge circuit for said capacitor through said direct current potential source.
Claim 2
Dependent Claim
113 words
A circuit for periodically reversing the polarity of a direct current supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, a nonpolarized capacitor, circuit means for connecting said capacitor across said positive and negative polarity output terminals of said direct current potential source, means for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and a potential sensitive electrical switching means included in said circuit means responsive to said charge upon said capacitor reaching said predetermined potential magnitude for completing a discharge circuit for said capacitor through said direct current potential source.
Claim 3
Dependent Claim
139 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, circuit means for connecting said capacitor across said inductor element and said direct current potential source in series, means for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and electrical switching means included in said circuit means for completing a discharge circuit for said capacitor through said direct current potential source and said inductor element when the charge upon said capacitor reaches said predetermined potential magnitude.
Claim 4
Dependent Claim
139 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, circuit means for connecting said capacitor across said inductor element and said direct current potential source in series, means for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and electrical switching means included in said circuit means for completing a discharge circuit for said capacitor through said direct current potential source and said inductor element when the charge upon said capacitor reaches said predetermined potential magnitude.
Claim 5
Dependent Claim
158 words
A circuit for periodically reversing the polarity of a Direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, circuit means for connecting said capacitor across said inductor element and said direct current potential source in series, a source of direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and electrical switching means included in said circuit means for completing a discharge circuit for said capacitor through said direct current potential source and said inductor element when said charge upon said capacitor reaches said predetermined potential magnitude.
Claim 6
Dependent Claim
158 words
A circuit for periodically reversing the polarity of a Direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, circuit means for connecting said capacitor across said inductor element and said direct current potential source in series, a source of direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and electrical switching means included in said circuit means for completing a discharge circuit for said capacitor through said direct current potential source and said inductor element when said charge upon said capacitor reaches said predetermined potential magnitude.
Claim 7
Dependent Claim
171 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across the series combination of said capacitor, said inductor element and said direct current potential source, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and means responsive to said charge upon said capacitor reaching said predetermined potential magnitude for completing a circuit for the flow of gate-cathode current through said silicon controlled rectifier.
Claim 8
Dependent Claim
171 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across the series combination of said capacitor, said inductor element and said direct current potential source, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, and means responsive to said charge upon said capacitor reaching said predetermined potential magnitude for completing a circuit for the flow of gate-cathode current through said silicon controlled rectifier.
Claim 9
Dependent Claim
207 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across said series combination of said capacitor, said inductor element and said direct current potential source, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, a bilateral potential sensitive electrical switching device, first and second resistors, means for connecting said first and second resistors in series across said series combination of said capacitor, said inductor and said direct current potential source, and means for connecting said gate electrode of said silicon controlled rectifier to the junction between said first and second resistors through said bilateral potential sensitive electrical switching device.
Claim 10
Dependent Claim
207 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a direct current potential source having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity output terminal of said direct current potential source and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across said series combination of said capacitor, said inductor element and said direct current potential source, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across said capacitor for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said direct current potential source, a bilateral potential sensitive electrical switching device, first and second resistors, means for connecting said first and second resistors in series across said series combination of said capacitor, said inductor and said direct current potential source, and means for connecting said gate electrode of said silicon controlled rectifier to the junction between said first and second resistors through said bilateral potential sensitive electrical switching device.
Claim 11
Dependent Claim
203 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a battery having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity oUtput terminal of said battery and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across the series combination of said capacitor, said inductor element and said battery, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across the series combination of said capacitor, said inductor element and said battery for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said battery, a bilateral potential sensitive electrical switching device, first and second resistors, means for connecting said first and second resistors in series across said series combination of said capacitor, said inductor element and said battery, and means for connecting said gate electrode of said silicon controlled rectifier to the junction between said first and second resistors through said bilateral potential sensitive electrical switching device.
Claim 12
Dependent Claim
203 words
A circuit for periodically reversing the polarity of a direct current potential supply line comprising in combination with a battery having positive and negative polarity output terminals, an inductor element, means for connecting said inductor element in series between a selected polarity oUtput terminal of said battery and said supply line, a nonpolarized capacitor, a silicon controlled rectifier having anode, cathode and gate electrodes, means for connecting said anode-cathode electrodes of said silicon controlled rectifier across the series combination of said capacitor, said inductor element and said battery, a source of half wave rectified direct current charging potential, means for connecting said source of direct current charging potential across the series combination of said capacitor, said inductor element and said battery for charging said capacitor to a predetermined potential magnitude of a polarity in series aiding relationship with said battery, a bilateral potential sensitive electrical switching device, first and second resistors, means for connecting said first and second resistors in series across said series combination of said capacitor, said inductor element and said battery, and means for connecting said gate electrode of said silicon controlled rectifier to the junction between said first and second resistors through said bilateral potential sensitive electrical switching device.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |