US3209207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potential indicator and surge filter apparatus for use therein
Assignee: Westinghouse Electric Corp
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Filing: 1963-04-03
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Granted: 1965-09-28
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Lasota
- 👤 George A Rusnak
- 👤 John W Doane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
POTENTIAL INDICATING APPARATUS FOR INDICATING THE EXISTENCE OF AN ALTERNATING CURRENT POTENTIAL DIFFERENCE OF NORMAL FREQUENCY BETWEEN A CONDUCTOR AND GROUND COMPRISING, IN COMBINATION, A SERIES CAPACITOR VOLTAGE DIVIDING NETWORK CONNECTED BETWEEN THE CONDUCTOR AND GROUND, SAID CAPACITOR VOLTAGE DIVIDING NETWORK HAVING A TAP AT A PREDETERMINE POINT THEREIN, FREQUENCY SENSITIVE VOLTAGE DIVIDING MEANS INCLUDING A LOW PASS FILTER CONNECTED BETWEEN SAID TAP AND GROUND TO PRODUCE A VOLTAGE OUTPUT WHICH VARIES IN ACCORDANCE WITH VARIATIONS IN THE COMPONENT OF NORMAL FREQUENCY IN THE CONDUCTOR, FULL WAVE RECTIFIER MEANS CONNECTED TO THE LOW PASS FILTER TO RECEIVE THE VOLTAGE OUTPUT THEREOF, AND RELAY MEANS INCLUDING A COIL CONNECTED TO THE RECTIFIER MEANS TO HAVE THE COIL THEREOF ENERGIZED BY THE OUTPUT OF THE RECTIFIER MEANS, WHEN THE VOLTAGE IN THE CONDUCTOR ATTAINS AT LEAST A FIRST PREDETERMINED VALUE AND TO HAVE THE COIL THEREOF DEENERGIZED WHEN THE VOLTAGE IN THE CONDUCTOR FALLS TO A SECOND PREDETERMINED VALUE LESS THAN THE FIRST VALUE.
Claim 2
Dependent Claim
162 words
POTENTIAL INDICATING APPARATUS FOR INDICATING THE EXISTENCE OF AN ALTERNATING CURRENT POTENTIAL DIFFERENCE OF NORMAL FREQUENCY BETWEEN A CONDUCTOR AND GROUND COMPRISING, IN COMBINATION, A SERIES CAPACITOR VOLTAGE DIVIDING NETWORK CONNECTED BETWEEN THE CONDUCTOR AND GROUND, SAID CAPACITOR VOLTAGE DIVIDING NETWORK HAVING A TAP AT A PREDETERMINE POINT THEREIN, FREQUENCY SENSITIVE VOLTAGE DIVIDING MEANS INCLUDING A LOW PASS FILTER CONNECTED BETWEEN SAID TAP AND GROUND TO PRODUCE A VOLTAGE OUTPUT WHICH VARIES IN ACCORDANCE WITH VARIATIONS IN THE COMPONENT OF NORMAL FREQUENCY IN THE CONDUCTOR, FULL WAVE RECTIFIER MEANS CONNECTED TO THE LOW PASS FILTER TO RECEIVE THE VOLTAGE OUTPUT THEREOF, AND RELAY MEANS INCLUDING A COIL CONNECTED TO THE RECTIFIER MEANS TO HAVE THE COIL THEREOF ENERGIZED BY THE OUTPUT OF THE RECTIFIER MEANS, WHEN THE VOLTAGE IN THE CONDUCTOR ATTAINS AT LEAST A FIRST PREDETERMINED VALUE AND TO HAVE THE COIL THEREOF DEENERGIZED WHEN THE VOLTAGE IN THE CONDUCTOR FALLS TO A SECOND PREDETERMINED VALUE LESS THAN THE FIRST VALUE.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |