US3829830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for switching d. c. power
Assignee: Hope Tronics Ltd
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Filing: 1972-03-16
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Granted: 1974-08-13
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Expires: 1992-03-16
Abstract
Abstract A circuit for delivering pulsed or constant power to a set of loads, particularly headlamps whose flashing serves as an alert. A number of transistor amplifiers serves as switches to switch moderately high power to the loads from a D.C. source. Two alternating, out-of-phase outputs of a continuously running astable multivibrator bias associated transistor switches into and out of conduction. This causes out of phase pulsed or flashing actuation of loads. An overriding, continuous bias potential, supplied to some, all, or none of the transistor switches, causes steady energization of some, all, or none of the loads. A remote switch controls the delivery of the continuous bias potential to selected transistor switches. When less than all loads operate continuously, the remaining pulsed loads include loads from both out-of-phase groups.
Inventors
- 👤 J Scarpino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/09; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/34; B60Q1/38; B60Q1/385
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
461 words
A multiple lamp energizing circuit having three lamp energizing modes and including: a. a first set of at least 2 lamp energizing circuits, b. a second set of at least 2 lamp energizing circuits, c. each of said lamp energizing circuits including control means responsive to an electrical input signal for activating the energizing circuit and each having first and second control connections, d. a means for producing two alternating out-of-phase outputs at first and second output terminals, e. a selector switch including 1. a bias connection, 2. a first switch output, 3. a second switch output, and 4. means for selectively connecting the bias connection with one of the first output, the second output, and neither output, f. a unidirectional current conductor means in addition to and distinct from the control means of the energizing circuits and conductive in one direction between first and second connections, g. said first output terminal of said alternating producing means being connected to the first control connection in at least one and less than all energizing circuit control means of said first and second sets of energizing circuits, h. said second output terminal of said alternating output producing means being connected to the first control connection of the remaining energizing circuit control means of both sets of energizing circuits, i. the second control connection of all of the first set of energizing circuits being connected to the first connection of the unidirectional conductor means and to said first switch output, j. the second control connection of all of the second set of energizing circuits being connected to the second connection of the unidirectional conductor means and to the second switch output, whereby in operation, (1) with the selector switch bias applied to neither switch output, said alternating output means activates energizing circuits of both sets that are connected with the first input terminal of the alternating output producing means, alternately and out of phase with the remaining energizing circuits of both sets that are connected with the second output terminal of the alternating output producing means, (2) with the switch bias connection connected to the first switch output, an overriding bias is applied to the second control connections of all of the circuits in the first set and blocked by the unidirectional conductor means from the circuits of the second set, to continuously activate only the circuits of the first set while the second set continues to be alternately activated outof-phase, and (3) with the bias connection connected to the second switch output, the overriding bias is applied to the second control connections of all of the second set of circuits and, via the unidirectional conductor means, to the second control connections of the first set to cause all circuits continuously to be activated.
Claim 2
Dependent Claim
461 words
A multiple lamp energizing circuit having three lamp energizing modes and including: a. a first set of at least 2 lamp energizing circuits, b. a second set of at least 2 lamp energizing circuits, c. each of said lamp energizing circuits including control means responsive to an electrical input signal for activating the energizing circuit and each having first and second control connections, d. a means for producing two alternating out-of-phase outputs at first and second output terminals, e. a selector switch including 1. a bias connection, 2. a first switch output, 3. a second switch output, and 4. means for selectively connecting the bias connection with one of the first output, the second output, and neither output, f. a unidirectional current conductor means in addition to and distinct from the control means of the energizing circuits and conductive in one direction between first and second connections, g. said first output terminal of said alternating producing means being connected to the first control connection in at least one and less than all energizing circuit control means of said first and second sets of energizing circuits, h. said second output terminal of said alternating output producing means being connected to the first control connection of the remaining energizing circuit control means of both sets of energizing circuits, i. the second control connection of all of the first set of energizing circuits being connected to the first connection of the unidirectional conductor means and to said first switch output, j. the second control connection of all of the second set of energizing circuits being connected to the second connection of the unidirectional conductor means and to the second switch output, whereby in operation, (1) with the selector switch bias applied to neither switch output, said alternating output means activates energizing circuits of both sets that are connected with the first input terminal of the alternating output producing means, alternately and out of phase with the remaining energizing circuits of both sets that are connected with the second output terminal of the alternating output producing means, (2) with the switch bias connection connected to the first switch output, an overriding bias is applied to the second control connections of all of the circuits in the first set and blocked by the unidirectional conductor means from the circuits of the second set, to continuously activate only the circuits of the first set while the second set continues to be alternately activated outof-phase, and (3) with the bias connection connected to the second switch output, the overriding bias is applied to the second control connections of all of the second set of circuits and, via the unidirectional conductor means, to the second control connections of the first set to cause all circuits continuously to be activated.
Claim 3
Dependent Claim
4 words
a first switch output,
Claim 4
Dependent Claim
4 words
a first switch output,
Claim 5
Dependent Claim
26 words
The lamp energizing circuit according to claim 1 wherein the means for producing first and second out-of-phase electrical output signals is a continuously running astable multivibrator.
Claim 6
Dependent Claim
43 words
The lamp energizing circuit according to claim 1, wherein energizing circuits from each of the two lamp energizing circuit sets controlled by the two out-of-phase outputs are connected with lamps on the opposite sides of a vehicle to cause a distracting out-of-phase flashing.
Claim 7
Dependent Claim
5 words
a second switch output, and
Claim 8
Dependent Claim
5 words
a second switch output, and
Claim 9
Dependent Claim
97 words
The lamp energizing circuit according to claim 2, wherein each lamp energizing circuit is connected with a lamp, at least two lamps connected with the first energizing circuit set are located on opposite sides of a vehicle, and at least two lamps connected with the second energizing circuit set are located on opposite sides of the vehicle, whereby when only the first set of lamp energizing circuits are biased continuously into activation, at least one lamp on each side of the vehicle is continuously lighted, while at least one lamp on each side of the veHicle flashes.
Claim 10
Dependent Claim
362 words
means for selectively connecting the bias connection with one of the first output, the second output, and neither output, f. a unidirectional current conductor means in addition to and distinct from the control means of the energizing circuits and conductive in one direction between first and second connections, g. said first output terminal of said alternating producing means being connected to the first control connection in at least one and less than all energizing circuit control means of said first and second sets of energizing circuits, h. said second output terminal of said alternating output producing means being connected to the first control connection of the remaining energizing circuit control means of both sets of energizing circuits, i. the second control connection of all of the first set of energizing circuits being connected to the first connection of the unidirectional conductor means and to said first switch output, j. the second control connection of all of the second set of energizing circuits being connected to the second connection of the unidirectional conductor means and to the second switch output, whereby in operation, (1) with the selector switch bias applied to neither switch output, said alternating output means activates energizing circuits of both sets that are connected with the first input terminal of the alternating output producing means, alternately and out of phase with the remaining energizing circuits of both sets that are connected with the second output terminal of the alternating output producing means, (2) with the switch bias connection connected to the first switch output, an overriding bias is applied to the second control connections of all of the circuits in the first set and blocked by the unidirectional conductor means from the circuits of the second set, to continuously activate only the circuits of the first set while the second set continues to be alternately activated out-of-phase, and (3) with the bias connection connected to the second switch output, the overriding bias is applied to the second control connections of all of the second set of circuits and, via the unidirectional conductor means, to the second control connections of the first set to cause all circuits continuously to be activated.
Claim 11
Dependent Claim
362 words
means for selectively connecting the bias connection with one of the first output, the second output, and neither output, f. a unidirectional current conductor means in addition to and distinct from the control means of the energizing circuits and conductive in one direction between first and second connections, g. said first output terminal of said alternating producing means being connected to the first control connection in at least one and less than all energizing circuit control means of said first and second sets of energizing circuits, h. said second output terminal of said alternating output producing means being connected to the first control connection of the remaining energizing circuit control means of both sets of energizing circuits, i. the second control connection of all of the first set of energizing circuits being connected to the first connection of the unidirectional conductor means and to said first switch output, j. the second control connection of all of the second set of energizing circuits being connected to the second connection of the unidirectional conductor means and to the second switch output, whereby in operation, (1) with the selector switch bias applied to neither switch output, said alternating output means activates energizing circuits of both sets that are connected with the first input terminal of the alternating output producing means, alternately and out of phase with the remaining energizing circuits of both sets that are connected with the second output terminal of the alternating output producing means, (2) with the switch bias connection connected to the first switch output, an overriding bias is applied to the second control connections of all of the circuits in the first set and blocked by the unidirectional conductor means from the circuits of the second set, to continuously activate only the circuits of the first set while the second set continues to be alternately activated out-of-phase, and (3) with the bias connection connected to the second switch output, the overriding bias is applied to the second control connections of all of the second set of circuits and, via the unidirectional conductor means, to the second control connections of the first set to cause all circuits continuously to be activated.
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |