US3213362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase detector using zener diode bridges and a summing network
Assignee: Westinghouse Electric Corp
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Filing: 1962-01-24
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Granted: 1965-10-19
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Sheldon D Silliman
- 👤 William F Cruess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:48
CPC Classifications
G; G01; G01R; G01R25/00; H; H02; H02J; H02J3/00; H02J3/38; H02J3/40; H02J3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
MEANS FOR DETECTING THE PHASE DISPLACEMENT BETWEEN TWO ALTERNATING VOLTAGE SOURCES COMPRISING, A FIRST TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS ONE PHASE OF ONE VOLTAGE SOURCE AND A SECONDARY WINDING; SECOND TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS THE CORRESPONDING PHASE OF THE OTHER VOLTAGE SOURCE AND A SECONDARY WINDING; THE SECONDARY WINDINGS OF SAID TRANSFORMERS HAVING THE SAME VOLTAGE RATING, A FOUR RECTIFIER BRIDGE CIRCUIT HAVING INPUT TERMINALS CONNECTED ACROSS EACH SECONDARY WINDING AND OUTPUT TERMINALS; ZENER DIODE HAVING APREDETERMINED BREAKOVER VOLTAGE CONNECTED ACROSS THE OUTPUT TERMINALS OF EACH BRIDGE CIRCUIT TO LIMIT EACH ALTERNATING SECONDARY VOLTAGE TO A PREDETERMINED MAXIMUM, A PAIR OF OUTPUT TERMINALS, AND
Claim 2
Dependent Claim
109 words
MEANS FOR DETECTING THE PHASE DISPLACEMENT BETWEEN TWO ALTERNATING VOLTAGE SOURCES COMPRISING, A FIRST TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS ONE PHASE OF ONE VOLTAGE SOURCE AND A SECONDARY WINDING; SECOND TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS THE CORRESPONDING PHASE OF THE OTHER VOLTAGE SOURCE AND A SECONDARY WINDING; THE SECONDARY WINDINGS OF SAID TRANSFORMERS HAVING THE SAME VOLTAGE RATING, A FOUR RECTIFIER BRIDGE CIRCUIT HAVING INPUT TERMINALS CONNECTED ACROSS EACH SECONDARY WINDING AND OUTPUT TERMINALS; ZENER DIODE HAVING APREDETERMINED BREAKOVER VOLTAGE CONNECTED ACROSS THE OUTPUT TERMINALS OF EACH BRIDGE CIRCUIT TO LIMIT EACH ALTERNATING SECONDARY VOLTAGE TO A PREDETERMINED MAXIMUM, A PAIR OF OUTPUT TERMINALS, AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |