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Patent US3303359A successfully refreshed from Google Patents.
US3303359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear ramp generator
Assignee: Raytheon Co
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Filing: 1964-07-31
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Granted: 1967-02-07
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Jr George S Des Brisay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:13
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A RAMP GENERATOR COMPRISING: DIFFERENTIAL AMPLIFIER MEANS HAVING AN INPUT TERMINAL AND AN OUTPUT TERMINAL; SIGNAL PROCESSING MEANS HAVING A VOLTAGE GAIN OF ESSENTIALLY UNITY AND HAVING AN INPUT TERMINAL AND AN OUTPUT TERMINAL, THE INPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS BEING COUPLED TO THE OUTPUT TERMINAL OF SAID DIFFERENTIAL AMPLIFIER MEANS; A CAPACITOR HAVING A FIRST ELECTRODE COUPLED TO THE INPUT TERMINAL OF SAID DIFFERENTIAL AMPLIFIER MEANS AND HAVING A SECOND ELECTRODE COUPLED TO THE OUTPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS; CURRENT SUPPLY MEANS COUPLED TO SAID FIRST ELECTRODE OF SAID CAPACITOR FOR PROVIDING AN ESSENTIALLY CONSTANT CURRENT; SWITCHING MEANS COUPLED TO SAID FIRST AND SAID SECOND ELECTRODES OF SAID CAPACITOR FOR MAINTAINING AN ESSENTIALLY CONSTANT CHARGE ON SAID CAPACITOR IN THE ABSENCE OF A CONTROL SIGNAL, AND IN RESPONSE TO A CONTROL SIGNAL FOR ALLOWING SAID CURRENT SUPPLY MEANS TO CHARGE SAID CAPACITOR LINEARLY AT A PREDETERMINED RATE WHEREBY A RAMP VOLTAGE IS PROVIDED AT THE OUTPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS, AND UPON TERMINATION OF SAID CONTROL SIGNAL FOR DISCHARGING SAID CAPACITOR AT A RATE SUBSTANTIALLY FASTER THAN SAID PREDETERMINED RATE WHEREBY SAID RAMP VOLTAGE IS TERMINATED; AND MEANS FOR GENERATING SAID CONTROL SIGNAL AND APPLYING IT TO SAID SWITCHING MEANS.
Claim 2
Dependent Claim
207 words
A RAMP GENERATOR COMPRISING: DIFFERENTIAL AMPLIFIER MEANS HAVING AN INPUT TERMINAL AND AN OUTPUT TERMINAL; SIGNAL PROCESSING MEANS HAVING A VOLTAGE GAIN OF ESSENTIALLY UNITY AND HAVING AN INPUT TERMINAL AND AN OUTPUT TERMINAL, THE INPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS BEING COUPLED TO THE OUTPUT TERMINAL OF SAID DIFFERENTIAL AMPLIFIER MEANS; A CAPACITOR HAVING A FIRST ELECTRODE COUPLED TO THE INPUT TERMINAL OF SAID DIFFERENTIAL AMPLIFIER MEANS AND HAVING A SECOND ELECTRODE COUPLED TO THE OUTPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS; CURRENT SUPPLY MEANS COUPLED TO SAID FIRST ELECTRODE OF SAID CAPACITOR FOR PROVIDING AN ESSENTIALLY CONSTANT CURRENT; SWITCHING MEANS COUPLED TO SAID FIRST AND SAID SECOND ELECTRODES OF SAID CAPACITOR FOR MAINTAINING AN ESSENTIALLY CONSTANT CHARGE ON SAID CAPACITOR IN THE ABSENCE OF A CONTROL SIGNAL, AND IN RESPONSE TO A CONTROL SIGNAL FOR ALLOWING SAID CURRENT SUPPLY MEANS TO CHARGE SAID CAPACITOR LINEARLY AT A PREDETERMINED RATE WHEREBY A RAMP VOLTAGE IS PROVIDED AT THE OUTPUT TERMINAL OF SAID SIGNAL PROCESSING MEANS, AND UPON TERMINATION OF SAID CONTROL SIGNAL FOR DISCHARGING SAID CAPACITOR AT A RATE SUBSTANTIALLY FASTER THAN SAID PREDETERMINED RATE WHEREBY SAID RAMP VOLTAGE IS TERMINATED; AND MEANS FOR GENERATING SAID CONTROL SIGNAL AND APPLYING IT TO SAID SWITCHING MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |