US3229228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable frequency wien-bridge oscillator
Assignee: Individual
•
Filing: 1962-09-25
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Granted: 1966-01-11
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Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Zack D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20; H03B5/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN ADJUSTABLE FREQUENCY OSCILLATOR COMPRISING AN AMPLIFIER, SAID AMPLIFIER HAVING AN OUTPUT ELECTRODE, AN INPUT ELECTRODE, AND A COMMON ELECTRODE, AT LEAST TWO VOLTAGE DIVIDER CIRCUITS COUPLED IN PARALLEL ACROSS THE OUTPUT ELECTRODE AND COMMON ELECTRODE OF SAID AMPLIFIER, EACH DIVIDER CIRCUIT COMPISING TWO BRANCHES, ONE BRANCH INCLUDING A SERIES RESISTANCE AND CONDENSER AND THE OTHER BRANCH INCLUDING A PARALLEL RESISTANCE AND CONDENSER, MEANS COUPLED BETWEENT THE JUNCTIONS OF THE BRANCHS OF THE PLURAL DIVIDER CIRCUITS FOR MIXING THE VOLTAGES AT THE JUNCTIONS IN ADJUSTABLE PROPORTIONS, AND MEANS FOR APPLYING THE MIXED VOLTAGES TO SAID INPUT ELECTRODE, THE RESISTANCE-CAPACITY OF THE DIVIDER CIRCUITS BEING DIFFERENT SO THAT THE OSCILLATION FREQUENCY IS A FUNCTION OF SAID ADJUSTBLE PROPORTION,
Claim 2
Dependent Claim
117 words
AN ADJUSTABLE FREQUENCY OSCILLATOR COMPRISING AN AMPLIFIER, SAID AMPLIFIER HAVING AN OUTPUT ELECTRODE, AN INPUT ELECTRODE, AND A COMMON ELECTRODE, AT LEAST TWO VOLTAGE DIVIDER CIRCUITS COUPLED IN PARALLEL ACROSS THE OUTPUT ELECTRODE AND COMMON ELECTRODE OF SAID AMPLIFIER, EACH DIVIDER CIRCUIT COMPISING TWO BRANCHES, ONE BRANCH INCLUDING A SERIES RESISTANCE AND CONDENSER AND THE OTHER BRANCH INCLUDING A PARALLEL RESISTANCE AND CONDENSER, MEANS COUPLED BETWEENT THE JUNCTIONS OF THE BRANCHS OF THE PLURAL DIVIDER CIRCUITS FOR MIXING THE VOLTAGES AT THE JUNCTIONS IN ADJUSTABLE PROPORTIONS, AND MEANS FOR APPLYING THE MIXED VOLTAGES TO SAID INPUT ELECTRODE, THE RESISTANCE-CAPACITY OF THE DIVIDER CIRCUITS BEING DIFFERENT SO THAT THE OSCILLATION FREQUENCY IS A FUNCTION OF SAID ADJUSTBLE PROPORTION,
References Cited (Backward Citations)
US2441567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |