US3909620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time controlled switching system with override control of manual operation
Assignee: New Nippon Electric Co Ltd
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Filing: 1973-10-29
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Granted: 1975-09-30
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Expires: 1993-10-29
Abstract
Abstract The control system comprises a combination of a timer device and a switching circuit. The timer device comprises a clock circuit for dividing a signal of a predetermined duration into a plurality of signals on the basis of time division and for sequentially producing the plurality of divided signals at a plurality of output terminals, a time setting circuit for setting a desired time, and circuit means for sequentially comparing the time which is set by the time setting circuit with the plurality of output signals from the clock circuit so as to produce an output when the logical condition represented by the clock circuit coincides with or becomes just opposite to the logical condition of the time setting circuit. The switching circuit comprises an automatic switching circuit which is connected to receive the output of the timer device, a first holding circuit, a second holding circuit, a manually operated switch and a load switch which are constructed and arranged such that when the automatic switching circuit is operated, the first holding circuit is controlled by the operation of the manually operated switch. Upon the automatic switching circuit being operated, the manually operated switch is maintained in the inoperative condition by the second holding circuit, that the first holding circuit is controlled by the operation of the automatic switching circuit, and that the load switch is controlled by the first holding circuit.
Inventors
- 👤 Hirotoshi Matsuda
- 👤 Osamu Sugita
- 👤 Yuji Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:56
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; H03K5/135; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/64
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
311 words
A control system comprising a combination of a timer device and a switching circuit, said timer device comprising clock circuit means for dividing a signal of predetermined time duration into a plurality of signals on the basis of time division and for sequentially producing said plurality of divided time signals at a plurality of output terminals, said plurality of divided time signals corresponding to a time indication, time setting circuit means for setting a desired time, and comparison means for sequentially comparing the time which is set by said time setting circuit means with the time indication represented by said plurality of time divided output signals from said clock circuit means and for producing an output upon the time indication represented by said clock circuit coinciding with the time setting of said time setting circuit means; and said switching circuit means comprising load switch means, manually operated switch means, automatic switching circuit means connected to receive said output of said timer device, first holding circuit means for controlling operation of said load switch means and controlled by either said manually operated switch means or said automatic switching circuit means, second holding circuit means for rendering the manually operated switch means ineffective to control operation of said first holding circuit means, switch-over means for selectively enabling either said automatic switching circuit means or said manually operated switch means to control operation of said first holding circuit means, and means for rendering said manually operated switch means ineffective by said second holding circuit means in response to the output from said timer device with the automatic switching circuit means being conditioned by said switch-over means to control operation of said load switch means whereby said first holding circuit means is controlled by the operation of said automatic switching circuit means and said load switch means is controlled by said first holding circuit means.
Claim 2
Dependent Claim
311 words
A control system comprising a combination of a timer device and a switching circuit, said timer device comprising clock circuit means for dividing a signal of predetermined time duration into a plurality of signals on the basis of time division and for sequentially producing said plurality of divided time signals at a plurality of output terminals, said plurality of divided time signals corresponding to a time indication, time setting circuit means for setting a desired time, and comparison means for sequentially comparing the time which is set by said time setting circuit means with the time indication represented by said plurality of time divided output signals from said clock circuit means and for producing an output upon the time indication represented by said clock circuit coinciding with the time setting of said time setting circuit means; and said switching circuit means comprising load switch means, manually operated switch means, automatic switching circuit means connected to receive said output of said timer device, first holding circuit means for controlling operation of said load switch means and controlled by either said manually operated switch means or said automatic switching circuit means, second holding circuit means for rendering the manually operated switch means ineffective to control operation of said first holding circuit means, switch-over means for selectively enabling either said automatic switching circuit means or said manually operated switch means to control operation of said first holding circuit means, and means for rendering said manually operated switch means ineffective by said second holding circuit means in response to the output from said timer device with the automatic switching circuit means being conditioned by said switch-over means to control operation of said load switch means whereby said first holding circuit means is controlled by the operation of said automatic switching circuit means and said load switch means is controlled by said first holding circuit means.
Claim 3
Dependent Claim
55 words
A control system according to claim 1 wherein said automatic switching circuit means further includes additional override manually operated switch means adapted to control said load switch means in conjunction with said first holding circuit means independently of the automatic switching signal output of said timer device and said first mentioned manually operated switch means.
Claim 4
Dependent Claim
77 words
A control system according to claim 1 wherein said clock circuit means includes means for dividing on time division basis a plurality of digits which represent 10 hours unit, one hours unit, 10 minutes and one minute units, respectively, into a plurality of time divided binary signals, means for generating a plurality of signals representing the order of said time divided binary signals, and binary to decimal converter means for converting said binary signals into decimal signals.
Claim 5
Dependent Claim
59 words
A control system according to claim 3 wherein said time setting circuit means comprises a plurality of input terminals connected to receive said decimal signal produced by said binary-to-decimal converter means and a plurality of manually operated switches for setting a time in terms of 10 hours unit, one hour unit, 10 minutes unit and one minute unit, respectively.
Claim 6
Dependent Claim
130 words
A control system according to claim 4 wherein said comparison circuit means comprises a plurality of transistors each having an emitter, base and collector electrodes, means to connect the emitter electrodes of said transistors with said plurality of manually operated time setting switches, respectively, means for applying to the base electrodes of said transistors said signals representing the order of the time divided binary signals generated by said clock circuit means, a plurality of integrating circuits respectively connected to the collector electrodes of said transistors, and a logic circuit connected to said plurality of transistors, said logic circuit producing an output only upon all of said transistors being rendered responsive to the preset time of the manually operated switches and the time divided signals generated by said clock circuit means.
Claim 7
Dependent Claim
50 words
A control system according to claim 5 wherein each of said integrating circuits comprises a resistor connected between one terminal of a source of supply and the collector electrode of each transistor, and a capacitor connected between the collector electrode of each transistor and the other terminal of said source.
Claim 8
Dependent Claim
73 words
A control system according to claim 1 wherein said switch-over means automatic-manual transfer switch means including a first transfer switch connected between said automatic switching circuit means and said first holding circuit means and a second transfer switch connected between a source of supply and said second holding circuit means, said first and second transfer switches being interlocked such that upon one of them being closed, the other is opened and vice versa.
Claim 9
Dependent Claim
54 words
A control system according to claim 7 which includes a diode connected between said automatic switching circuit means and said second holding circuit means for maintaining said manually operated switch means inoperative while said first holding circuit means and said automatic switching circuit means are conditioned to control operation of the load switch means.
Claim 10
Dependent Claim
53 words
A control system according to claim 8 wherein said manually operated switch means is connected between said first and second holding circuit means such that the operation of said first holding circuit means is controlled by said manually operated switch upon said automatic switching circuit means being rendered inoperative by said switch-over means.
Claim 11
Dependent Claim
55 words
A control system according to claim 9 wherein said automatic switching circuit means further includes additional override manually operated switch means adapted to control said load switch means in conjunction with said first holding circuit means independently of said automatic switching signal output from said timer device and said first mentioned manually operated switch means.
Claim 12
Dependent Claim
77 words
A control system according to claim 10 wherein said clock circuit means includes means for dividing on time division basis a plurality of digits which represent 10 hours unit, one hours unit, 10 minutes and one minute units, respectively, into a plurality of time divided binary signals, means for generating a plurality of signals representing the order of said time divided binary signals, and binary to decimal converter means for converting said binary signals into decimal signals.
Claim 13
Dependent Claim
59 words
A control system according to claim 11 wherein said time setting circuit means comprises a plurality of input terminals connected to receive said decimal signal produced by said binary-to-decimal converter means and a plurality of manually operated switches for setting a time in terms of 10 hours unit, one hour unit, 10 minutes unit and one minute unit, respectively.
Claim 14
Dependent Claim
130 words
A control system according to claim 12 wherein said comparison circuit means comprises a plurality of transistors each having an emitter, base and collector electrodes, means to connect the emitter electrodes of said transistors with said plurality of manually operated time setting switches, respectively, means for applying to the base electrodes of said transistors said signals representing the order of the time divided binary signals generated by said clock circuit means, a plurality of integrating circuits respectively connected to the collector electrodes of said transistors, and a logic circuit connected to said plurality of transistors, said logic circuit producing an output only upon all of said transistors being rendered responsive to the preset time of the manually operated switches and the tIme divided signals generated by said clock circuit means.
Claim 15
Dependent Claim
50 words
A control system according to claim 13 wherein each of said integrating circuits comprises a resistor connected between one terminal of a source of supply and the sollector electrode of each transistor, and a capacitor connected between the collector electrode of each transistor and the other terminal of said source.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |