US3092824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1961-08-09
•
Granted: 1963-06-04
•
Expires: 1981-08-09
Abstract
No abstract record available.
Inventors
- 👤 John M Bentley
- 👤 James H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:49
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A DIRECT CURRENT DIGITAL TO ANALOG DECORDER COMPRISING: A DIRECT CURRENT REFERENCE VOLTAGE HAVING OUTPUTS OF BOTH POLARITIES; A POLARITY SELECTING SWITCH MEANS COUPLED TO BOTH OUTPUTS OF SAID DIRECT CURRENT REFERENCE VOLTAGE TO PRODUCE THE SELECTED POLARITY ON A SINGLE OUTPUT THEREOF; AN AMPLIFIER HAVING AN INPUT AND AN OUTPUT; A PLURALITY OF BINARY WEIGHTED RESISTORS HAVING OUTPUT ENDS COUPLED IN COMMON TO SAID AMPLIFIER INPUT; A PLURALITY OF DIGIT SWITCH MEANS HAVING THE INPUTS THERETO COUPLED IN COMMON TO SAID POLARITY SELECTING SWITCH SINGLE OUTPUT AND THEIR RESPECTIVE OUTPUTS COUPLED RESPECTIVELY TO THE INPUT END OF ONE EACH BINARY WEIGHTED RESISTOR FOR SELECTIVELY SWITCHING THE DIRECT CURRENT VOLTAGE OF SELECTED POLARITY TO SAID RESISTORS; AND SWITCH DRIVER CIRCUITS EACH HAVING AN INPUT TO RECEIVE A DIGITAL BINARY REGISTER VOLTAGE SIGNAL AND EACH HAVING AN OUTPUT, THE OUTPUT OF ONE SWITCH DRIVER CIRCUIT BEING COUPLED TO SAID POLARITY SELECTING SWITCH MEANS AND THE OUTPUTS OF THE REMAINING SWITCH DRIVER CIRCUITS BEING COUPLED RESPECTIVELY TO ONE EACH OF SAID DIGIT SWITCH MEANS TO CONTROL THE SWITCHING OF SAID POLARITY SELECTING SWITCH MEANS AND SAID DIGIT SWITCH MEANS IN ACCORDANCE WITH THE DIGITAL BINARY VOLTAGE REGISTER SIGNAL COMBINATION WHEREBY A DIRECT CURRENT ANALOG VOLTAGE IS PRODUCED ON THE OUTPUT OF SAID AMPLIFIER OF SAID DIGITAL BINARY VOLTAGE SIGNAL COMBINATION.
Claim 2
Dependent Claim
218 words
A DIRECT CURRENT DIGITAL TO ANALOG DECORDER COMPRISING: A DIRECT CURRENT REFERENCE VOLTAGE HAVING OUTPUTS OF BOTH POLARITIES; A POLARITY SELECTING SWITCH MEANS COUPLED TO BOTH OUTPUTS OF SAID DIRECT CURRENT REFERENCE VOLTAGE TO PRODUCE THE SELECTED POLARITY ON A SINGLE OUTPUT THEREOF; AN AMPLIFIER HAVING AN INPUT AND AN OUTPUT; A PLURALITY OF BINARY WEIGHTED RESISTORS HAVING OUTPUT ENDS COUPLED IN COMMON TO SAID AMPLIFIER INPUT; A PLURALITY OF DIGIT SWITCH MEANS HAVING THE INPUTS THERETO COUPLED IN COMMON TO SAID POLARITY SELECTING SWITCH SINGLE OUTPUT AND THEIR RESPECTIVE OUTPUTS COUPLED RESPECTIVELY TO THE INPUT END OF ONE EACH BINARY WEIGHTED RESISTOR FOR SELECTIVELY SWITCHING THE DIRECT CURRENT VOLTAGE OF SELECTED POLARITY TO SAID RESISTORS; AND SWITCH DRIVER CIRCUITS EACH HAVING AN INPUT TO RECEIVE A DIGITAL BINARY REGISTER VOLTAGE SIGNAL AND EACH HAVING AN OUTPUT, THE OUTPUT OF ONE SWITCH DRIVER CIRCUIT BEING COUPLED TO SAID POLARITY SELECTING SWITCH MEANS AND THE OUTPUTS OF THE REMAINING SWITCH DRIVER CIRCUITS BEING COUPLED RESPECTIVELY TO ONE EACH OF SAID DIGIT SWITCH MEANS TO CONTROL THE SWITCHING OF SAID POLARITY SELECTING SWITCH MEANS AND SAID DIGIT SWITCH MEANS IN ACCORDANCE WITH THE DIGITAL BINARY VOLTAGE REGISTER SIGNAL COMBINATION WHEREBY A DIRECT CURRENT ANALOG VOLTAGE IS PRODUCED ON THE OUTPUT OF SAID AMPLIFIER OF SAID DIGITAL BINARY VOLTAGE SIGNAL COMBINATION.
References Cited (Backward Citations)
US3030619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |