US3434132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator error correction apparatus
Assignee: General Precision Systems Inc
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Filing: 1966-10-19
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Granted: 1969-03-18
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Expires: 1986-10-19
Abstract
No abstract record available.
Inventors
- 👤 Edgar J Smith
- 👤 Lell E Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:12
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A SYSTEM HAVING A COURSE SENSING DEVICE FOR INDICATING THE NUMBER OF WHOLE REVOLUTIONS OF A SHAFT AND THE EXTENT OF A FRACTIOPNAL REVOLUTION THEREOF AND A FINE SENSING DEVICE FOR INDICATING THE EXTENT OF THE FRACTIONAL REVOLUTION OF THE SHAFT AND WHEREIN THE SPEED RATIO OF SAID DEVICES IS A VALUE, N, AN INDICATOR ERROR COMPENSATION APPARATUS COMPRISING, MEANS FOR SCALING THE INDICATION OF ONE OF SAID INDICATORS TO THE OTHER BY MULTIPLYING THE SAME BY A POWER OF THE RATIO, N, AND RA WHEREIN A IS A POSITIVE OR NEGATIVE INTEGRAL NUMBER, MEANS FOR COMPARING THE SCALED INDICATION WITH THE OTHER INDICATION AND DERIVING A LOGICAL CORRECTION SIGNAL ACCORDING TO THE VARIATION THEREBETWEEN, MEANS RESPONSIVE TO SAID VARIATION FOR CORRECTING THE COARSE INDICATION AND MEANS FOR COMBINING THE CORRECTED COARSE AND FINE INDICATIONS TO PROVIDE A CORRECT RESULTANT INDICATION.
Claim 2
Dependent Claim
142 words
IN A SYSTEM HAVING A COURSE SENSING DEVICE FOR INDICATING THE NUMBER OF WHOLE REVOLUTIONS OF A SHAFT AND THE EXTENT OF A FRACTIOPNAL REVOLUTION THEREOF AND A FINE SENSING DEVICE FOR INDICATING THE EXTENT OF THE FRACTIONAL REVOLUTION OF THE SHAFT AND WHEREIN THE SPEED RATIO OF SAID DEVICES IS A VALUE, N, AN INDICATOR ERROR COMPENSATION APPARATUS COMPRISING, MEANS FOR SCALING THE INDICATION OF ONE OF SAID INDICATORS TO THE OTHER BY MULTIPLYING THE SAME BY A POWER OF THE RATIO, N, AND RA WHEREIN A IS A POSITIVE OR NEGATIVE INTEGRAL NUMBER, MEANS FOR COMPARING THE SCALED INDICATION WITH THE OTHER INDICATION AND DERIVING A LOGICAL CORRECTION SIGNAL ACCORDING TO THE VARIATION THEREBETWEEN, MEANS RESPONSIVE TO SAID VARIATION FOR CORRECTING THE COARSE INDICATION AND MEANS FOR COMBINING THE CORRECTED COARSE AND FINE INDICATIONS TO PROVIDE A CORRECT RESULTANT INDICATION.
References Cited (Backward Citations)
US3160803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |