US3205492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion method and apparatus
Assignee: Evershed and Vignoles Ltd
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Filing: 1962-06-22
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Granted: 1965-09-07
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ian R Young
- 👤 John A Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:19
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G08C19/48; H; H03; H03M; H03M1/00; H03M1/12; H03M1/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
IN A DIGITAL VOLTMETER FOR DERIVING A DIGITAL REPRESENTATION OF THE VALUE OF A VARIABLE REPRESENTED BY AN INPUT SIGNAL INCLUDING COMPARATOR MEANS, MEANS FOR APPLYING THE INPUT SIGNAL TO THE COMPARATOR MEANS, MEANS FOR DERIVING A PLURALITY OF BALANCING SIGNALS AND SWITCHING MEANS FOR SUCCESSIVELY APPLYING THE BALANCING SIGNALS TO THE COMPARATOR MEANS, THE SAID SWITCHING MEANS BEING RESPONSIVE TO THE COMPARATOR MEANS TO CONTINUE THE APPLICATION OF A BALANCING SIGNAL TO THE COMPARATOR MEANS IF UPON APPLICATION OF THAT BALANCING SIGNAL THE AMPLITUDE OF THE INPUT SIGNAL IS GREATER THAN THE SUM OF THE AMPLITUDES OF THE BALANCING SIGNALS APPLIED TO THE COMPARATOR MEANS BUT REMOVING THE SAID SIGNAL IF THE AMPLITUDE OF THE INPUT SIGNAL IS LESS THAN THAT OF THE SAID SUM, SO THAT THE FINAL STATE OF THE SWITCHING MEANS REPRESENTS THE ALUE OF THE INPUT SIGNAL; THE COMBINATION OF MEANS FOR DERIVING A PLURALITY OF CORRECTING SIGNALS AND SWITCHING MEANS RESPONSIVE TO THE CONDITION OF THE BALANCING SIGNAL SWITCHING MEANS FOR APPLYING PREDETERMINED COMBINATIONS OF THE CORRECTIVE SIGNALS TO THE COMPARATOR MEANS TO VARY THE EFFECTIVE VALUE OF THE SUM OF THE APPLIED BALANCING SIGNALS AND THUS INTRODUCE CORRECTIONS FOR GIVEN DEVIATIONS OF THE INPUT SIGNAL FROM A LINEAR RELATIONSHIP WITH THE VARIABLE TO BE REPRESENTED IN DIGITAL FORM.
Claim 2
Dependent Claim
215 words
IN A DIGITAL VOLTMETER FOR DERIVING A DIGITAL REPRESENTATION OF THE VALUE OF A VARIABLE REPRESENTED BY AN INPUT SIGNAL INCLUDING COMPARATOR MEANS, MEANS FOR APPLYING THE INPUT SIGNAL TO THE COMPARATOR MEANS, MEANS FOR DERIVING A PLURALITY OF BALANCING SIGNALS AND SWITCHING MEANS FOR SUCCESSIVELY APPLYING THE BALANCING SIGNALS TO THE COMPARATOR MEANS, THE SAID SWITCHING MEANS BEING RESPONSIVE TO THE COMPARATOR MEANS TO CONTINUE THE APPLICATION OF A BALANCING SIGNAL TO THE COMPARATOR MEANS IF UPON APPLICATION OF THAT BALANCING SIGNAL THE AMPLITUDE OF THE INPUT SIGNAL IS GREATER THAN THE SUM OF THE AMPLITUDES OF THE BALANCING SIGNALS APPLIED TO THE COMPARATOR MEANS BUT REMOVING THE SAID SIGNAL IF THE AMPLITUDE OF THE INPUT SIGNAL IS LESS THAN THAT OF THE SAID SUM, SO THAT THE FINAL STATE OF THE SWITCHING MEANS REPRESENTS THE ALUE OF THE INPUT SIGNAL; THE COMBINATION OF MEANS FOR DERIVING A PLURALITY OF CORRECTING SIGNALS AND SWITCHING MEANS RESPONSIVE TO THE CONDITION OF THE BALANCING SIGNAL SWITCHING MEANS FOR APPLYING PREDETERMINED COMBINATIONS OF THE CORRECTIVE SIGNALS TO THE COMPARATOR MEANS TO VARY THE EFFECTIVE VALUE OF THE SUM OF THE APPLIED BALANCING SIGNALS AND THUS INTRODUCE CORRECTIONS FOR GIVEN DEVIATIONS OF THE INPUT SIGNAL FROM A LINEAR RELATIONSHIP WITH THE VARIABLE TO BE REPRESENTED IN DIGITAL FORM.
References Cited (Backward Citations)
US3045230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |