US3171978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing networks
Assignee: Unisys Corp
•
Filing: 1961-09-18
•
Granted: 1965-03-02
•
Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Frank W Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:24
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/284; H03K17/00; H03K17/28; H03K5/00; H03K5/01; H03K5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A TIMING NETWORK COMPRISING: A CAPACITOR; MEANS INCLUDING A RESISTOR COUPLED TO THE CAPACITOR FOR CHARGING THE CAPACITOR; MEANS FOR DISCHARGING THE CAPACITOR; A VOLT AGE CLAMPING DEVICE HAVING A PREDETERMINED CLAMPING VOLTAGE COUPLED TO A JUNCTION OF THE RESISTOR AND THE CAPACITOR AND TO A SOURCE OF REFERENCE POTENTIAL FOR SWITCHING TO A CONDUCTIVE STATE DURING THE CHARGING OF THE CAPACITOR WHEN THE VOLTAGE AT THE JUNCTION RELATIVE TO THE REFERENCE POTENTIAL REACHES THE CLAMPING VOLTAGE TO REMAIN IN THE CONDUCTIVE STATE WHILE THE JUNCTION VOLTAGE RELATIVE TO THE REFERENCE POTENTIAL SUBSTANTIALLY EQUALS THE CLAMPING VOLTAGE, THEREBY PREVENTING ANY FURTHER BUILD UP OF CHARGE ON THE CAPACITOR; AND MEANS FOR DERIVING AN OUTPUT SIGNAL FROM THE CLAMPING DEVICE.
Claim 2
Dependent Claim
119 words
A TIMING NETWORK COMPRISING: A CAPACITOR; MEANS INCLUDING A RESISTOR COUPLED TO THE CAPACITOR FOR CHARGING THE CAPACITOR; MEANS FOR DISCHARGING THE CAPACITOR; A VOLT AGE CLAMPING DEVICE HAVING A PREDETERMINED CLAMPING VOLTAGE COUPLED TO A JUNCTION OF THE RESISTOR AND THE CAPACITOR AND TO A SOURCE OF REFERENCE POTENTIAL FOR SWITCHING TO A CONDUCTIVE STATE DURING THE CHARGING OF THE CAPACITOR WHEN THE VOLTAGE AT THE JUNCTION RELATIVE TO THE REFERENCE POTENTIAL REACHES THE CLAMPING VOLTAGE TO REMAIN IN THE CONDUCTIVE STATE WHILE THE JUNCTION VOLTAGE RELATIVE TO THE REFERENCE POTENTIAL SUBSTANTIALLY EQUALS THE CLAMPING VOLTAGE, THEREBY PREVENTING ANY FURTHER BUILD UP OF CHARGE ON THE CAPACITOR; AND MEANS FOR DERIVING AN OUTPUT SIGNAL FROM THE CLAMPING DEVICE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |