US3686583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal generator for a flasher type direction indicator
Assignee: Denso Corp
•
Filing: 1971-01-05
•
Granted: 1972-08-22
•
Expires: 1991-01-05
Abstract
Abstract There has been provided a signal generator for a flasher type direction indicator including first and second integrator circuits, each associated with first and second logical circuits. Inputs and outputs of each of the respective circuits are coupled to their associated logical circuits so that each produces an output when the input and output of each of their associated integrating circuits are both activated. Further the output of each logical circuit is coupled to the common inputs of the other integrating and logical circuits so that the indicator is flashed on and off by the output signals of the second logical circuit. There has further been provided third and fourth integrating circuits with respectively associated first and second inverter circuits for inverting the outputs of their associated integrated circuits with a reversal of phase. The output of the second logical circuit is coupled to the common input of the first integrator and associated logical circuit at the input of the third integrator, while the output of the first inverter is coupled to the input of the fourth integrator so that three indicators are flashed on and off at different recurrent rates in accordance with the output of the second logical circuit and the first and second inverter circuits.
Inventors
- 👤 Hisasi Kawai
- 👤 Masami Amaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/34; B60Q1/38; B60Q1/381; Y; Y10; Y10S; Y10S331/00; Y10S331/03
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A signal generator for a flasher type direction indicator comprising a first integrating circuit, a first logical circuit for generating an output signal when both the input and output signals of said first integrating circuit are applied thereto, a second integrating circuit, and a second logical circuit for generating an output signal when both the input and output signal of said second integrating circuit are applied thereto, the input terminal of said second integrating circuit and the input terminal of said second logical circuit having a common connection to the output terminal of said first logical circuit, and the input terminal of said first integrating circuit and the input terminal of said first logical circuit having a common connection to the output terminal of said second logical circuit, whereby a light is flashed on and off with the output signals from said second logical circuit.
Claim 2
Dependent Claim
145 words
A signal generator for a flasher type direction indicator comprising a first integrating circuit, a first logical circuit for generating an output signal when both the input and output signals of said first integrating circuit are applied thereto, a second integrating circuit, and a second logical circuit for generating an output signal when both the input and output signal of said second integrating circuit are applied thereto, the input terminal of said second integrating circuit and the input terminal of said second logical circuit having a common connection to the output terminal of said first logical circuit, and the input terminal of said first integrating circuit and the input terminal of said first logical circuit having a common connection to the output terminal of said second logical circuit, whereby a light is flashed on and off with the output signals from said second logical circuit.
Claim 3
Dependent Claim
50 words
A signal generator for a flasher type direction indicator as set forth in claim 1, wherein each of said first and second integrating circuits comprises a transistor adapted to be conductive when an input signal is applied thereto, and a capacitor adapted to be discharged upon conduction of said transistor.
Claim 4
Dependent Claim
56 words
A signal generator for a flasher type direction indicator as set forth in claim 1, wherein each of said first and seCond integrating circuits comprises a NAND circuit consisting of an IC element with an expander terminal, said NAND circuit having inserted between said expander terminal and the output terminal thereof a circuit including a capacitor.
Claim 5
Dependent Claim
28 words
A signal generator for a flasher type direction indicator as set forth in claim 3, wherein each of said first and second logical circuits comprises a NAND circuit.
Claim 6
Dependent Claim
208 words
A signal generator for a flasher type direction indicator comprising first, second, third and fourth integrating circuits, a first logical circuit for generating an output signal when both the input and output signals of said first integrating circuit are applied thereto, a second logical circuit for generating an output signal when both the input and output signals of said second integrating circuit are applied thereto, and first and second inverter circuits for respectively changing the waveshapes of the output signals of said third and fourth integrating circuits with a reveral in phase, the input terminal of said second integrating circuit and the input terminal of said second logical circuit having a common connection to the output terminal of said first logical circuit, the input terminals of said first and third integrating circuits and the input terminal of said first logical circuit having a common connection to the output terminal of said second logical circuit, the output terminal of said first inverter circuit being connected to the input terminal of said fourth integrating circuit, whereby three light sources are flashed on and off at the same periods but with different flashing ratios with the three output signals from said second logical circuit, and said first and second inverter circuits.
Claim 7
Dependent Claim
208 words
A signal generator for a flasher type direction indicator comprising first, second, third and fourth integrating circuits, a first logical circuit for generating an output signal when both the input and output signals of said first integrating circuit are applied thereto, a second logical circuit for generating an output signal when both the input and output signals of said second integrating circuit are applied thereto, and first and second inverter circuits for respectively changing the waveshapes of the output signals of said third and fourth integrating circuits with a reveral in phase, the input terminal of said second integrating circuit and the input terminal of said second logical circuit having a common connection to the output terminal of said first logical circuit, the input terminals of said first and third integrating circuits and the input terminal of said first logical circuit having a common connection to the output terminal of said second logical circuit, the output terminal of said first inverter circuit being connected to the input terminal of said fourth integrating circuit, whereby three light sources are flashed on and off at the same periods but with different flashing ratios with the three output signals from said second logical circuit, and said first and second inverter circuits.
Claim 8
Dependent Claim
52 words
A signal generator for a flasher type direction indicator as set forth in claim 5, wherein each of said first, second, third and fourth integrating circuits comprises a transistor adapted to be conductive when an input signal is applied thereto, and a capacitor adapted to be discharged upon conduction of said transistor.
Claim 9
Dependent Claim
58 words
A signal generator for a flasher type direction indicator as set forth in claim 5, wherein each of said first, second, third and fourth integrating circuits comprises a NAND circuit consisting of an IC element having an expander terminal, said NAND circuit having inserted between said expander terminal and the output terminal thereof a circuit including a capacitor.
Claim 10
Dependent Claim
40 words
A signal generator for a flasher type direction indicator as set forth in claim 7, wherein each of said first and second logical circuits and said first and second inverter circuit comprises a NAND circuit consisting of an IC element.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |