Patent US3578990A successfully refreshed from Google Patents.
US3578990A
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Pulse generator timing circuits
Assignee: Individual
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Filing: 1969-04-02
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Granted: 1971-05-18
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Expires: 1989-04-02
Abstract
Abstract A detector provides a signal for switching on the power supply of a proximately positioned transmitter upon the detection of desired information. A signal representative of the desired information is transmitted and, at predetermined times thereafter, coded signature signals are produced for transmission, these latter signals being supplied by a code generator upon the receipt thereto of pulses from a one-shot and/or repetitive interval timer. The one-shot timer at a predetermined period of time after receipt of the switching signal provides a single pulse to the code generator. The repetitive interval timer provides recurring pulses to the code generator at predetermined intervals of time after receipt of the switching signal. The system consumes no power in the standby mode.
Inventors
- 👤 Henry Naubereit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:05
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/335; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
An electrical timer which consumes no power in the standby mode and which provides but one output pulse comprising: time delay means adapted to provide an electrical signal a predetermined time after the receipt thereby of a first input electrical signal; pulsing means connected with and responsive to said time delay means for providing an output pulse including, a four-layer diode, and a transistor having its base connected to said time delay means and its emitter connected to one side of said fourlayer diode, said transistor being rendered conductive upon the receipt of said electrical signal from said time delay means; a first resistor connected between ground and the other side of said four-layer diode; and a pulse-shaping network connected across said first resistor.
Claim 2
Dependent Claim
124 words
An electrical timer which consumes no power in the standby mode and which provides but one output pulse comprising: time delay means adapted to provide an electrical signal a predetermined time after the receipt thereby of a first input electrical signal; pulsing means connected with and responsive to said time delay means for providing an output pulse including, a four-layer diode, and a transistor having its base connected to said time delay means and its emitter connected to one side of said fourlayer diode, said transistor being rendered conductive upon the receipt of said electrical signal from said time delay means; a first resistor connected between ground and the other side of said four-layer diode; and a pulse-shaping network connected across said first resistor.
Claim 3
Dependent Claim
61 words
An electrical timer according to claim 1 further including: a second resistor for receiving a second input signal at one end thereof and connected at the other end thereof to the collector of said transistor, the ohmic value of said resistor being of sufficient magnitude to provide a sustaining current through said four-layer diode such that said four-layer diode cannot reset.
Claim 4
Dependent Claim
209 words
An electrical timer which consumes no power in the standby mode and which provides an output pulse repetitively at predetermined intervals comprising: time delay means including a variable resistor and a variable capacitor connected between one terminal of said variable resistor and ground for receiving a first input electrical signal and for providing an output electrical signal in response thereto at the one terminal thereof a predetermined time after the receipt of said input signal; pulsing means connected with said time delay means and responsive to the output electrical signal thereof for providing a pulse at predetermined intervals including, a transistor and a four-layer diode one end of said diode being connected to the base of said transistor and the other end of said diode being connected to said electrical time delay means at said one terminal of said variable resistor; a first resistor for receiving a second input signal at one end thereof and connected at the other end thereof to the collector of said transistor; a capacitor connected at one end thereof to the collector of said transistor; and a second resistor connected between ground and the other end of said capacitor, whereby said transistor is rendered conductive upon the discharge of current through said four-layer diode.
Claim 5
Dependent Claim
209 words
An electrical timer which consumes no power in the standby mode and which provides an output pulse repetitively at predetermined intervals comprising: time delay means including a variable resistor and a variable capacitor connected between one terminal of said variable resistor and ground for receiving a first input electrical signal and for providing an output electrical signal in response thereto at the one terminal thereof a predetermined time after the receipt of said input signal; pulsing means connected with said time delay means and responsive to the output electrical signal thereof for providing a pulse at predetermined intervals including, a transistor and a four-layer diode one end of said diode being connected to the base of said transistor and the other end of said diode being connected to said electrical time delay means at said one terminal of said variable resistor; a first resistor for receiving a second input signal at one end thereof and connected at the other end thereof to the collector of said transistor; a capacitor connected at one end thereof to the collector of said transistor; and a second resistor connected between ground and the other end of said capacitor, whereby said transistor is rendered conductive upon the discharge of current through said four-layer diode.
Claim 6
Dependent Claim
39 words
An electrical timer according to claim 3 further including: first and second diodes, each of said diodes connected across said second resistor such that the polarity of said first diode is opposite from the polarity of said second diode.
Claim 7
Dependent Claim
46 words
An electrical timer according to claim 2 wherein: said capacitor and said first and second diodes comprise a pulse-forming network; and said variable resistance has an ohmic value of sufficient magnitude to limit the current through said four-layer diode thereby to permit said diode to reset.
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |