Patent US3179877A successfully refreshed from Google Patents.
US3179877A
Expired / Lapsed
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Linear function generators
Assignee: Dynamics Corp of America
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Filing: 1960-04-15
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Granted: 1965-04-20
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Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Godet Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:18
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A LINEAR FUNCTION GENERATOR COMPRISING A ROTATABLE TRANSFORMER HAVING FIRST AND SECOND OUTPUTS FOR PROVIDING FIRST AND SECOND SIGNALS WHOSE MAGNITUDES VARY AS THE SINE AND COSINE, RESPECTIVELY, OF THE ANGULAR POSITION OF A ROTATABLE MEMBER COUPLED TO SAID ROTATABLE TRANSFORMER, FIRST MEANS COUPLED TO SAID ROTATABLE TRANSFORMER FOR SUPPLYING SAID ROTATABLE TRANSFORMER WITH AN ALTERNATING INPUT SIGNAL, SECOND MEANS COUPLED TO SAID FIRST MEANS FOR COUPLING A NEGATIVE FEEDBACK SIGNAL FROM ONE OF THE OUTPUTS OF SAID ROTATABLE TRANSFORMER TO SAID FIRST MEANS, AN AMPLIFIER CIRCUIT INCLUDED WITHIN ONE OF SAID FIRST OR SECOND MEANS, AND ADDITIONAL MEANS COUPLED TO SAID AMPLIFIER CIRCUIT FOR COUPLING A NEGATIVE FEEDBACK SIGNAL FROM THE OUTPUT OF SAID AMPLIFIER CIRCUIT TO THE INPUT OF SAID AMPLIFIER CIRCUIT, SAID NEGATIVE FEEDBACK SIGNALS BEING PROPORTIONED SO THAT THE MAXIMUM DEGENERATIVE EFFECT PRODUCED BY THE FEEDBACK SIGNAL FROM SAID SECOND MEANS IS SUBSTANTIALLY ONE-HALF THE DEGENERATIVE EFFECT PRODUCED BY THE FEEDBACK SIGNAL FROM SAID ADDITIONAL MEANS.
Claim 2
Dependent Claim
160 words
A LINEAR FUNCTION GENERATOR COMPRISING A ROTATABLE TRANSFORMER HAVING FIRST AND SECOND OUTPUTS FOR PROVIDING FIRST AND SECOND SIGNALS WHOSE MAGNITUDES VARY AS THE SINE AND COSINE, RESPECTIVELY, OF THE ANGULAR POSITION OF A ROTATABLE MEMBER COUPLED TO SAID ROTATABLE TRANSFORMER, FIRST MEANS COUPLED TO SAID ROTATABLE TRANSFORMER FOR SUPPLYING SAID ROTATABLE TRANSFORMER WITH AN ALTERNATING INPUT SIGNAL, SECOND MEANS COUPLED TO SAID FIRST MEANS FOR COUPLING A NEGATIVE FEEDBACK SIGNAL FROM ONE OF THE OUTPUTS OF SAID ROTATABLE TRANSFORMER TO SAID FIRST MEANS, AN AMPLIFIER CIRCUIT INCLUDED WITHIN ONE OF SAID FIRST OR SECOND MEANS, AND ADDITIONAL MEANS COUPLED TO SAID AMPLIFIER CIRCUIT FOR COUPLING A NEGATIVE FEEDBACK SIGNAL FROM THE OUTPUT OF SAID AMPLIFIER CIRCUIT TO THE INPUT OF SAID AMPLIFIER CIRCUIT, SAID NEGATIVE FEEDBACK SIGNALS BEING PROPORTIONED SO THAT THE MAXIMUM DEGENERATIVE EFFECT PRODUCED BY THE FEEDBACK SIGNAL FROM SAID SECOND MEANS IS SUBSTANTIALLY ONE-HALF THE DEGENERATIVE EFFECT PRODUCED BY THE FEEDBACK SIGNAL FROM SAID ADDITIONAL MEANS.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |