US3170991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for stereo separation ratio control, elimination of cross-talk and the like
Assignee: Individual
•
Filing: 1963-11-27
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Granted: 1965-02-23
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Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Glasgal Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:27
CPC Classifications
H; H04; H04S; H04S1/00; H04S1/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SYSTEM OF THE CHARACTER DESCRIBED, UTILIZING FIRST AND SECOND INPUT SIGNALS, FIRST AND SECOND POTENTIOMETERS, EACH COMPRISING A RESISTANCE AND A TAP MOVABLE THEREALONG, FIRST AND SECOND MIXERS, EACH HAVING AN OUTPUT TERMINAL AND TWO INPUT TERMINALS AND FIRST AND SECOND UNITY GAIN PHASE REVERSERS, WHEREIN THE RESISTANCE OF THE FIRST POTENTIOMETER IS CONNECTED ACROSS BOTH PHASES OF THE FIRST INPUT SIGNAL AND THE RESISTANCE OF THE SECOND POTENTIOMETER IS CONNECTED ACROSS BOTH PHASES OF THE SECOND INPUT SIGNAL, THE MOVABLE TAPS OF SAID FIRST AND SECOND POTENTIOMETERS BEING ELECTRICALY CONNECTED AS INPUTS TO SAID FIRST AND SECOND MIXERS RESPECTIVELY. A FIRST INPUT SIGNAL ELECTRICALLY CONNECTED TO THE INPUT TERMINAL OF THE FIRST PHASE REVERSER AND THE SECOND MIXER, A SECOND INPUT SIGNAL ELECTRICALLY CONNECTED TO THE INPUT TERMINAL OF THE SECOND PHASE REVERSER AND TO THE FIST MIXER; THE OUTPUT SIGNAL OF THE FIRST MIXER BEING THE NEW MODIFIED SECOND SIGNAL AND THE OUTPUT SIGNAL OF THE SECOND MIXER BEING THE NEW MODIFIED FIRST SIGNAL OF SAID SYSTEM.
Claim 2
Independent Claim
170 words
A SYSTEM OF THE CHARACTER DESCRIBED, UTILIZING FIRST AND SECOND INPUT SIGNALS, FIRST AND SECOND POTENTIOMETERS, EACH COMPRISING A RESISTANCE AND A TAP MOVABLE THEREALONG, FIRST AND SECOND MIXERS, EACH HAVING AN OUTPUT TERMINAL AND TWO INPUT TERMINALS AND FIRST AND SECOND UNITY GAIN PHASE REVERSERS, WHEREIN THE RESISTANCE OF THE FIRST POTENTIOMETER IS CONNECTED ACROSS BOTH PHASES OF THE FIRST INPUT SIGNAL AND THE RESISTANCE OF THE SECOND POTENTIOMETER IS CONNECTED ACROSS BOTH PHASES OF THE SECOND INPUT SIGNAL, THE MOVABLE TAPS OF SAID FIRST AND SECOND POTENTIOMETERS BEING ELECTRICALY CONNECTED AS INPUTS TO SAID FIRST AND SECOND MIXERS RESPECTIVELY. A FIRST INPUT SIGNAL ELECTRICALLY CONNECTED TO THE INPUT TERMINAL OF THE FIRST PHASE REVERSER AND THE SECOND MIXER, A SECOND INPUT SIGNAL ELECTRICALLY CONNECTED TO THE INPUT TERMINAL OF THE SECOND PHASE REVERSER AND TO THE FIST MIXER; THE OUTPUT SIGNAL OF THE FIRST MIXER BEING THE NEW MODIFIED SECOND SIGNAL AND THE OUTPUT SIGNAL OF THE SECOND MIXER BEING THE NEW MODIFIED FIRST SIGNAL OF SAID SYSTEM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |