US3178642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical testers having means for supplying three-phase voltage of adjustable magnitude and polarity for testing polyphase electrical apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1959-11-18
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Granted: 1965-04-13
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Craig
- 👤 Robert E Bruderly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:38
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/02; H02H3/04; H02H3/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A POLYPHASE ELECTRICAL TESTING DEVICE COMPRISING A FIRST SET OF AT LEAST THREE TERMINALS A, B AND C EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET, A SECOND SET OF AT LEAST THREE TERMINALS A1, B1 AND C1 EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET AND A THIRD SET OF T LEAST THREE TERMINALS A2, B2 AND C2 EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET, ENERGIZING MEANS RESPONSIVE TO ENERGIZATION OF THE FIRST SET OF TERMINALS WITH THREE-PHASE VOLTAGE FOR PRODUCING THREE-PHASE VOLTAGE OF ADJUSTABLE MAGNITUDE BETWEEN THE SECOND AND THIRD SETS OF TERMINALS, SAID ENERGIZING MEANS INCLUDING THREE-PHASE TRANSFORMER MEANS HAVING THREE PHASE PRIMARY WINDINGS AND THREE PHASE SECONDARY WINDINGS, CONNECTING MEANS CONNECTING THE TRANSFORMER MEANS FOR ENERGIZING THE PRIMARY WINDINGS FROM THE FIRST SET OF TERMINALS AND FOR CONNECTING THE SECONDARY WINDINGS TO DELIVER A FIRST PHASE VOLTAGE BETWEEN THE TERMINALS A1 AND A2, A SECOND PHASE VOLTAGE ACROSS THE TERMINALS B1 AND B2 AND A THIRD PHASE VOLTAGE ACROSS THE TERMINALS C1 AND C2, SAID ENERGIZING MEANS INCLUDING MEANS OPERABLE FOR ADJUSTING THE MAGNITUDES OF SAID FIRST, SECOND AND THIRD PHASE VOLTAGES, SAID ENERGIZING MEANS INCLUDING SWITCHING MEANS MANUALLY OPERABLE FOR REVERSING THE
Claim 2
Dependent Claim
201 words
A POLYPHASE ELECTRICAL TESTING DEVICE COMPRISING A FIRST SET OF AT LEAST THREE TERMINALS A, B AND C EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET, A SECOND SET OF AT LEAST THREE TERMINALS A1, B1 AND C1 EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET AND A THIRD SET OF T LEAST THREE TERMINALS A2, B2 AND C2 EACH CORRESPONDING TO ONE PHASE OF A THREE-PHASE SET, ENERGIZING MEANS RESPONSIVE TO ENERGIZATION OF THE FIRST SET OF TERMINALS WITH THREE-PHASE VOLTAGE FOR PRODUCING THREE-PHASE VOLTAGE OF ADJUSTABLE MAGNITUDE BETWEEN THE SECOND AND THIRD SETS OF TERMINALS, SAID ENERGIZING MEANS INCLUDING THREE-PHASE TRANSFORMER MEANS HAVING THREE PHASE PRIMARY WINDINGS AND THREE PHASE SECONDARY WINDINGS, CONNECTING MEANS CONNECTING THE TRANSFORMER MEANS FOR ENERGIZING THE PRIMARY WINDINGS FROM THE FIRST SET OF TERMINALS AND FOR CONNECTING THE SECONDARY WINDINGS TO DELIVER A FIRST PHASE VOLTAGE BETWEEN THE TERMINALS A1 AND A2, A SECOND PHASE VOLTAGE ACROSS THE TERMINALS B1 AND B2 AND A THIRD PHASE VOLTAGE ACROSS THE TERMINALS C1 AND C2, SAID ENERGIZING MEANS INCLUDING MEANS OPERABLE FOR ADJUSTING THE MAGNITUDES OF SAID FIRST, SECOND AND THIRD PHASE VOLTAGES, SAID ENERGIZING MEANS INCLUDING SWITCHING MEANS MANUALLY OPERABLE FOR REVERSING THE
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |