US3195037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal measuring apparatus including a variable resonant circuit
Assignee: US Philips Corp
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Filing: 1961-03-28
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Granted: 1965-07-13
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Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Aart Gerard Van Nie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:55
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/18; H; H02; H02M; H02M7/00; H02M7/42; H02M7/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
ELECTRICAL APPARATUS FOR MODIFYING A CHARACTERISTIC OF AN ELECTRICAL SIGNAL APPLIED THERETO COMPRISING A STATIONARY ELECTRODE AND A VIBRATILE ELECTRODE IN CAPACITIVE RELATIONSHIP, MEANS FOR APPLYING SAID SIGNAL TO SAID ELECTRODES, INPUT MEANS FOR A SOURCE OF ELECTRICAL ENERGY AT A GIVEN FREQUENCY, AN INDUCTANCE-CAPACITANCE CIRCUIT CONNECTED TO SAID INPUT MEANS AND HAVING A NOMINAL RESONANT FREQUENCY DIFFERENT FROM THAT OF SAID ENERGY SOURCE, AND MEANS FOR VIBRATING SAID VIBRATILE ELECTRODE THEREBY TO PERIODICALLY VARY THE POSITION THEREOF RELATIVE TO SAID STATIONARY ELECTRODE, SAID VIBRATING MEANS CONSTITUTING A COMPONENT OF SAID INDUCTANCE-CAPACITANCE CIRCUIT AND UNDERGOING CHANGES IN THE ELECTRICAL REACTANCE THEREOF AS DETERMINED BY THE POSITION OF SAID VIBRATILE ELECTRODE WITH RESPECT TO SAID STATIONARY ELECTRODE THEREBY TO PRODUCE VARIATIONS OF THE RESONANT FREQUENCY OF SAID CIRCUIT AS DETERMINED BY CHANGES IN THE POSITION OF SAID VIBRATILE ELECTRODE.
Claim 2
Dependent Claim
138 words
ELECTRICAL APPARATUS FOR MODIFYING A CHARACTERISTIC OF AN ELECTRICAL SIGNAL APPLIED THERETO COMPRISING A STATIONARY ELECTRODE AND A VIBRATILE ELECTRODE IN CAPACITIVE RELATIONSHIP, MEANS FOR APPLYING SAID SIGNAL TO SAID ELECTRODES, INPUT MEANS FOR A SOURCE OF ELECTRICAL ENERGY AT A GIVEN FREQUENCY, AN INDUCTANCE-CAPACITANCE CIRCUIT CONNECTED TO SAID INPUT MEANS AND HAVING A NOMINAL RESONANT FREQUENCY DIFFERENT FROM THAT OF SAID ENERGY SOURCE, AND MEANS FOR VIBRATING SAID VIBRATILE ELECTRODE THEREBY TO PERIODICALLY VARY THE POSITION THEREOF RELATIVE TO SAID STATIONARY ELECTRODE, SAID VIBRATING MEANS CONSTITUTING A COMPONENT OF SAID INDUCTANCE-CAPACITANCE CIRCUIT AND UNDERGOING CHANGES IN THE ELECTRICAL REACTANCE THEREOF AS DETERMINED BY THE POSITION OF SAID VIBRATILE ELECTRODE WITH RESPECT TO SAID STATIONARY ELECTRODE THEREBY TO PRODUCE VARIATIONS OF THE RESONANT FREQUENCY OF SAID CIRCUIT AS DETERMINED BY CHANGES IN THE POSITION OF SAID VIBRATILE ELECTRODE.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |