US3258765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
H; H03; H03K; H03K9/00; H03K9/08; H03M; H03M1/00; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A DIGITAL TO ANALOG CONVERTER COMPRISING A CAPACITOR HAVING ONE SIDE ELECTRICALLY CONNECTED TO A REFERENCE POTENTIAL, A SOURCE OF CONSTANT CURRENT HAVING AN OUTPUT TERMINAL, A FIRST DIODE ELECTRICALLY CONNECTING SAID OUTPUT TERMINAL TO THE OTHER SIDE OF SAID CAPACITOR, A FIRST ELECTRONIC SWITCH HAVING ONE SIDE ELECTRICALLY CONNECTED TO SAID REFERENCE POTENTIAL AND HAVING ANOTHER SIDE ELECTRICALLY CONNECTED TO SAID OUTPUT TERMINAL, SAID SWITCH HAVING AN INPUT TERMINAL AND BEING OPPERATIVE IN A FIRST STATE TO BY-PASS THE OUTPUT OF SAID SOURCE AND IN A SECOND STATE TO FORWARD BIAS SAID DIODE WHEREBY TO APPLY THE OUTPUT OF SAID SOURCE TO SAID CAPACITOR, A RESET CIRCUIT FOR SAID CAPACITOR COMPRISING, A SECOND DIODE HAVING ONE SIDE ELECTRICALLY CONNECTED TO SAID OTHER SIDE OF THE CAPACITOR, AND A SECOND ELECTRONIC SWITCH ELECTRICALLY CONNECTED TO THE OTHER SIDE OF SAID SECOND DIODE AND OPERATIVE TO CHANGE THE BIAS ON THE SECOND DIODE FOR DISCHARGING THE CAPACITOR, AND MEANS RESPONSIVE TO THE OPERATION OF THE SECOND SWITCH FOR APPLYING A VOLTAGE TO THE INPUT TERMINAL OF THE FIRST SWITCH TO ACTUATE THE LATTER TO CAUSE THE CONSTANT CURRENT SOURCE TO CONDUCT THROUGH SAID SECOND DIODE.
Claim 2
Dependent Claim
194 words
A DIGITAL TO ANALOG CONVERTER COMPRISING A CAPACITOR HAVING ONE SIDE ELECTRICALLY CONNECTED TO A REFERENCE POTENTIAL, A SOURCE OF CONSTANT CURRENT HAVING AN OUTPUT TERMINAL, A FIRST DIODE ELECTRICALLY CONNECTING SAID OUTPUT TERMINAL TO THE OTHER SIDE OF SAID CAPACITOR, A FIRST ELECTRONIC SWITCH HAVING ONE SIDE ELECTRICALLY CONNECTED TO SAID REFERENCE POTENTIAL AND HAVING ANOTHER SIDE ELECTRICALLY CONNECTED TO SAID OUTPUT TERMINAL, SAID SWITCH HAVING AN INPUT TERMINAL AND BEING OPPERATIVE IN A FIRST STATE TO BY-PASS THE OUTPUT OF SAID SOURCE AND IN A SECOND STATE TO FORWARD BIAS SAID DIODE WHEREBY TO APPLY THE OUTPUT OF SAID SOURCE TO SAID CAPACITOR, A RESET CIRCUIT FOR SAID CAPACITOR COMPRISING, A SECOND DIODE HAVING ONE SIDE ELECTRICALLY CONNECTED TO SAID OTHER SIDE OF THE CAPACITOR, AND A SECOND ELECTRONIC SWITCH ELECTRICALLY CONNECTED TO THE OTHER SIDE OF SAID SECOND DIODE AND OPERATIVE TO CHANGE THE BIAS ON THE SECOND DIODE FOR DISCHARGING THE CAPACITOR, AND MEANS RESPONSIVE TO THE OPERATION OF THE SECOND SWITCH FOR APPLYING A VOLTAGE TO THE INPUT TERMINAL OF THE FIRST SWITCH TO ACTUATE THE LATTER TO CAUSE THE CONSTANT CURRENT SOURCE TO CONDUCT THROUGH SAID SECOND DIODE.
References Cited (Backward Citations)
US3056047A
Cited
US3064144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |