US3329907A
Expired / Lapsed
US
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Multi-frequency relaxation oscillator and timing circuit
Assignee: International Business Machines Corp
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Filing: 1964-11-06
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Granted: 1967-07-04
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Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 Helgeson Lester Alvin
- 👤 Mueller Francis Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:12
CPC Classifications
H; H03; H03M; H03M1/00; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/282; H03M1/06; H03M1/08; H03M1/10; H03M1/1009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN AN RC TIMING CIRCUIT FOR A RELAXATION OSCILLATOR HAVING A VOLTAGE SENSING AND DISCHARGE CIRCUIT, A SOURCE OF CHARGING CURRENT; A TIMING CAPACITOR HAVING A FIRST TERMINAL; MEANS CONNECTING SAID FIRST TERMINAL TO SAID SOURCE TO CHARGE SAID TIMING CAPACITOR; A DELAY CAPACITOR, MEANS, INCLUDING DIODE MEANS, CONNECTING SAID DELAY CAPACITOR TO SAID FIRST TERMINAL FOR CHARGING BY SAID SOURCE AND BLOCKING THE FLOW OF CURRENT IN THE REVERSE DIRECTON, AND MEANS FURTHER CONNECTING SAID FIRST TERMINAL TO THE VOLTAGE SENSING AND DISCHARGE CIRCUIT TO DISCHARGE ONLY SAID TIMING CAPACITOR WHEN THE VOLTAGE THEREACROSS REACHES A PREDETERMINED LEVEL.
Claim 2
Dependent Claim
99 words
IN AN RC TIMING CIRCUIT FOR A RELAXATION OSCILLATOR HAVING A VOLTAGE SENSING AND DISCHARGE CIRCUIT, A SOURCE OF CHARGING CURRENT; A TIMING CAPACITOR HAVING A FIRST TERMINAL; MEANS CONNECTING SAID FIRST TERMINAL TO SAID SOURCE TO CHARGE SAID TIMING CAPACITOR; A DELAY CAPACITOR, MEANS, INCLUDING DIODE MEANS, CONNECTING SAID DELAY CAPACITOR TO SAID FIRST TERMINAL FOR CHARGING BY SAID SOURCE AND BLOCKING THE FLOW OF CURRENT IN THE REVERSE DIRECTON, AND MEANS FURTHER CONNECTING SAID FIRST TERMINAL TO THE VOLTAGE SENSING AND DISCHARGE CIRCUIT TO DISCHARGE ONLY SAID TIMING CAPACITOR WHEN THE VOLTAGE THEREACROSS REACHES A PREDETERMINED LEVEL.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |