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US3214641A
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Protective relay devices
Assignee: Westinghouse Electric Corp
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Filing: 1962-01-15
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Granted: 1965-10-26
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 William K Sonnemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:22
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/50; H02H3/52; H02H3/08; H02H3/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A TIME-DELAY PROTECTIVE RELAY A SATURATING TRANSFORMER DESIGNED FOR ENERGIZATION BY AN ALTERNATING-CURRENT INPUT OF A FIRST FREQUENCY, SAID TRANSFORMER HAVING A SATURABLE MAGNETIC CORE DESIGNED TO SATURATE WITHIN THE RATED RANGE OF ENERGIZATION THEREOF TO PRODUCE AN OUTPUT HAVING AN ALTERNATING-CURRENT COMPONENT OF A SECOND FREQUENCY, A CAPACITOR FOR STORING A CHARGE, MEANS RESPONSIVE TO APPEARNCE OF SAID ALTERNATING-CURRENT COMPONENT FOR INITIATING THE CHARGING OF THE CAPACITOR TO STORE ENERGY THEREIN, AND TRANSLATING MEANS RESPONSIVE TO A PREDETERMINED VOLTAGE APPEARING ACROSS SAID CAPACITOR.
Claim 2
Dependent Claim
85 words
IN A TIME-DELAY PROTECTIVE RELAY A SATURATING TRANSFORMER DESIGNED FOR ENERGIZATION BY AN ALTERNATING-CURRENT INPUT OF A FIRST FREQUENCY, SAID TRANSFORMER HAVING A SATURABLE MAGNETIC CORE DESIGNED TO SATURATE WITHIN THE RATED RANGE OF ENERGIZATION THEREOF TO PRODUCE AN OUTPUT HAVING AN ALTERNATING-CURRENT COMPONENT OF A SECOND FREQUENCY, A CAPACITOR FOR STORING A CHARGE, MEANS RESPONSIVE TO APPEARNCE OF SAID ALTERNATING-CURRENT COMPONENT FOR INITIATING THE CHARGING OF THE CAPACITOR TO STORE ENERGY THEREIN, AND TRANSLATING MEANS RESPONSIVE TO A PREDETERMINED VOLTAGE APPEARING ACROSS SAID CAPACITOR.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |