US3215928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volume changer employing a magnetic responsive resistor and providing a direct or inverse relation of output to input
Assignee: Individual
•
Filing: 1962-02-26
•
Granted: 1965-11-02
•
Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Aiken William Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03G7/00; H03G7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A VOLUME CHANGER ARRANGEMENT COMPRISING ALTERNATING SIGNAL INPUT MEANS, A PAIR OF RESISTORS CONNECTED IN SERIES BETWEEN SAID SIGNAL INPUT MEANS AND GROUND, AT LEAST ONE OF SAID RESISTORS BEING A MAGNETO-RESISTANCE DEVICE HAVING A RESISTANCE VALUE THAT VARIES IN RESPONSE TO MAGNETIC FIELDS, MEANS FOR ESTABLISHING A MAGNETIC FIELD ADJACENT SAID MAGNETO-RESISTANCE DEVICE, AND MEANS FOR CONTROLLING THE INTENSITY OF THE MAGNETIC FIELD ESTABLISHED BY SAID FIELD-ESTABLISHING MENS WITH A VOLTAGE DERIVED FROM THE INUT SIGNAL PASSING THROUGH THE VOLUME CHANGER ARRANGEMENT.
Claim 2
Dependent Claim
83 words
A VOLUME CHANGER ARRANGEMENT COMPRISING ALTERNATING SIGNAL INPUT MEANS, A PAIR OF RESISTORS CONNECTED IN SERIES BETWEEN SAID SIGNAL INPUT MEANS AND GROUND, AT LEAST ONE OF SAID RESISTORS BEING A MAGNETO-RESISTANCE DEVICE HAVING A RESISTANCE VALUE THAT VARIES IN RESPONSE TO MAGNETIC FIELDS, MEANS FOR ESTABLISHING A MAGNETIC FIELD ADJACENT SAID MAGNETO-RESISTANCE DEVICE, AND MEANS FOR CONTROLLING THE INTENSITY OF THE MAGNETIC FIELD ESTABLISHED BY SAID FIELD-ESTABLISHING MENS WITH A VOLTAGE DERIVED FROM THE INUT SIGNAL PASSING THROUGH THE VOLUME CHANGER ARRANGEMENT.
References Cited (Backward Citations)
US2549775A
Cited
US2752434A
Cited
FR1181706A
Cited
GB848369A
Cited
US2979668A
Cited
US3086126A
Cited
US3082381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |