US3249893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage controlled multivibrator with increased frequency deviation
Assignee: Data Control Systems Inc
•
Filing: 1963-02-20
•
Granted: 1966-05-03
•
Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Anthony J Castellano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/099; H03K; H03K7/00; H03K7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A RELAXATION OSCILLATOR HAVING A TIMING CAPACITOR, A MAIN SOURCE OF CURRENT FOR CHARGING SAID CAPACITOR, AND A SWITCH RESPONSIVE TO THE VOLTAGE ON SAID CAPACITOR AND CONNECTED TO SAID MAIN CURRENT SOURCE TO PASS THE CURRENT FROM SAID MAIN CURRENT SOURCE WHEN SAID CAPACITOR REACHES A PRE-DETERMINED VOLTAGE, THE IMPROVEMENT COMPRISING: A SECONDARY CURRENT SOURCE CONNECTED ACROSS SAID CAPACITOR TO MODIFY THE NET CURRENT FLOWING TO SAID CAPACITOR WITHOUT MODIFYING THE CURRENT AVAILABLE TO BE PASSED BY SAID SWITCH, AND CONTROL MEANS RESPONSIVE TO THE CHANGE OF STATE OF SAID SWITCH TO CAUSE THE DIRECTION OF CURRENT FLOW FROM SAID SECONDARY CURRENT SOURCE TO SAID CAPACITOR TO CHANGE AT THE SAME FREQUENCY AS THE RATE OF CHANGE OF STATE OF SAID SWITCH.
Claim 2
Dependent Claim
124 words
IN A RELAXATION OSCILLATOR HAVING A TIMING CAPACITOR, A MAIN SOURCE OF CURRENT FOR CHARGING SAID CAPACITOR, AND A SWITCH RESPONSIVE TO THE VOLTAGE ON SAID CAPACITOR AND CONNECTED TO SAID MAIN CURRENT SOURCE TO PASS THE CURRENT FROM SAID MAIN CURRENT SOURCE WHEN SAID CAPACITOR REACHES A PRE-DETERMINED VOLTAGE, THE IMPROVEMENT COMPRISING: A SECONDARY CURRENT SOURCE CONNECTED ACROSS SAID CAPACITOR TO MODIFY THE NET CURRENT FLOWING TO SAID CAPACITOR WITHOUT MODIFYING THE CURRENT AVAILABLE TO BE PASSED BY SAID SWITCH, AND CONTROL MEANS RESPONSIVE TO THE CHANGE OF STATE OF SAID SWITCH TO CAUSE THE DIRECTION OF CURRENT FLOW FROM SAID SECONDARY CURRENT SOURCE TO SAID CAPACITOR TO CHANGE AT THE SAME FREQUENCY AS THE RATE OF CHANGE OF STATE OF SAID SWITCH.
References Cited (Backward Citations)
US2750502A
Cited
US2767378A
Cited
US2972120A
Cited
US2990519A
Cited
US3048796A
Cited
US3037172A
Cited
US3133257A
Cited
US3021492A
Cited
US3145349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |