Patent US3304494A successfully refreshed from Google Patents.
US3304494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide range wide and narrow band direct indicating analyzer
Assignee: Individual
•
Filing: 1963-07-16
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Granted: 1967-02-14
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Anthony C Palatinus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:07
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A CIRCUIT FOR THE GENERATION OF REPETITIVE, CONSTANT AMPLITUDE SAWTOOTH VOLTAGES HAVING PRECISELY CONTROLLED VOLTAGE EXCURSION LIMITS WHICH COMPRISES: (A) A SOURCE OF CONSTANT CURRENT, (B) A CAPACITOR CONNECTED ACROSS SAID SOURCE FOR RECEIVING A CHARGING CURRENT THEREFROM, (C) A PARAPHASE DIFFERENTIAL AMPLIFIER HAVING ONE INPUT AND A PAIR OF OUTPUTS, SAID PARAPHASE AMPLIFIER INPUT CONNECTED ACROSS SAID CAPACITOR, (D) A SOURCE OF A SELECTABLE STABLE REFERENCE VOLTAGE, (E) A PAIR OF COMPARATORS EACH HAVING TWO INPUTS AND ONE OUTPUT AND OPERABLE TO PRODUCE A PULSE ONLY WHEN THE VOLTAGE LEVEL APPLIED TO ONE OF SAID INPUTS EXCEEDS THE VOLTAGE LEVEL APPLIED TO THE OTHER OF SAID INPUTS, (F) ELECTRICAL MEANS CONNECTING ONE OUTPUT OF SAID PARAPHASE AMPLIFIER TO EACH ONE INPUT OF ONE OF SAID COMPARATORS, (G) SAID SOURCE OF SAID REFERENCE VOLTAGE APPLIED TO THE OTHER INPUT OF EACH OF SAID COMPARATORS,
Claim 2
Dependent Claim
144 words
A CIRCUIT FOR THE GENERATION OF REPETITIVE, CONSTANT AMPLITUDE SAWTOOTH VOLTAGES HAVING PRECISELY CONTROLLED VOLTAGE EXCURSION LIMITS WHICH COMPRISES: (A) A SOURCE OF CONSTANT CURRENT, (B) A CAPACITOR CONNECTED ACROSS SAID SOURCE FOR RECEIVING A CHARGING CURRENT THEREFROM, (C) A PARAPHASE DIFFERENTIAL AMPLIFIER HAVING ONE INPUT AND A PAIR OF OUTPUTS, SAID PARAPHASE AMPLIFIER INPUT CONNECTED ACROSS SAID CAPACITOR, (D) A SOURCE OF A SELECTABLE STABLE REFERENCE VOLTAGE, (E) A PAIR OF COMPARATORS EACH HAVING TWO INPUTS AND ONE OUTPUT AND OPERABLE TO PRODUCE A PULSE ONLY WHEN THE VOLTAGE LEVEL APPLIED TO ONE OF SAID INPUTS EXCEEDS THE VOLTAGE LEVEL APPLIED TO THE OTHER OF SAID INPUTS, (F) ELECTRICAL MEANS CONNECTING ONE OUTPUT OF SAID PARAPHASE AMPLIFIER TO EACH ONE INPUT OF ONE OF SAID COMPARATORS, (G) SAID SOURCE OF SAID REFERENCE VOLTAGE APPLIED TO THE OTHER INPUT OF EACH OF SAID COMPARATORS,
References Cited (Backward Citations)
US2378604A
Cited
US2704325A
Cited
US2706777A
Cited
US2552884A
Cited
US3005928A
Cited
US3217271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |